英语科普文阅读导入

A. 医学科普文章英文版

由于随着科技和社会的发展，人们的生活水平不断提高，当代人把身体健康看得越来越重，对自己的饮食习惯，药物的使用与滥用和急救知识等格外关注。下面是我带来的医学科普 文章 ，欢迎阅读!

医学科普文章英文版1

为什么总是睡不好?十大常见睡眠错误

Most of us have struggled at some point with sleep. Whether it’s not getting enough sleepor struggling to get up in the morning, it can be difficult to get the balance just right.

大多数人都遇到过一些睡眠问题。有可能是睡得不够，又或者是早晨起不来，很难达到平衡睡得舒服。

However, sleep is essential if we want to be proctive in life. It provides us with theenergy we need to get stuff done!

然而为了保证精力充沛，睡眠是十分必要的。我们需要睡足了才有精力干活!

Here are the 10 most common sleep mistakes people make and a few tips for avoidingthem!

下面列出了常见的十大睡眠错误以及纠正小贴士。

1. The snooze button

闹钟止闹按钮

Don’t EVER hit the snoozebutton. It really is much more beneficial to just get up on yourfirst alarm. Think about it – the snooze button gives you an extra 10 minutes or so sleep. Inthe grand scheme of your day this really won’t provide you with any more energy. In-fact itdoes the opposite. Research has shown that ‘interrupted sleep’ can cause us to feel moretired.

千万不要按止闹按钮，其实在闹铃一响时就起来对身体更好。想想看，止闹按钮可以让你多睡10分钟或者更长一点时间。但相比于一整天满满的计划，这多睡的10分钟根本无法为你多添几份活力。事实上恰恰相反，研究表明受干扰的睡眠会让人更加疲倦。

2. Disorganized sleeping habits

不规律的睡眠习惯

It’s much easier to get to sleep each night (and wake up feeling refreshed) if we have aregular routine. This means going to bed at roughly the same time each night and getting upat roughly the same time each morning. If you’re disorganized with your sleeping routine, youend up interrupting your natural sleeping rhythms, which can cause insomnia and fatigue.

如果每天的作息时间规律，每晚会更加容易入眠(醒来时也会感到神清气爽)。也就是说每晚在相对固定的时间睡觉，每天早上在相对固定的时间起床。如果你睡觉的时间不规律，就会打乱你的生物钟，导致失眠和疲劳感。

3. Long naps

小睡时间过长

Long naps can disrupt your sleeping rhythms so if you’re desperate for a nap then keep itunder the 30 minute mark (and before 4pm). Short naps after lunch can help to restore energylevels (just make sure you don’t sleep in).

小睡时间过长会打乱人的生物钟，所以如果你真的很想打个盹儿的话，请把时间控制在30分钟以内(而且要在下午四点前睡)。在午餐后小睡一会儿有助于恢复体力(只是不要睡过头了)。

4. Caffeine/stimulants

咖啡因/兴奋剂

Don’t drink any caffeinated drinks after mid-day. Caffeine stimulatesyour body for up to 12hours after consumption so it’s important to restrict your intake later in the day. Be aware ofsupposed ‘herbal’ drinks such as green tea, which can have a high dose of caffeine. Alwayscheck the label.

请不要在中午之后饮用含咖啡因的饮料。咖啡因会持续的影响人体12个小时，所以要控制自己不要在中午以后摄取咖啡因。小心一些“草本”饮料，例如绿茶含有很高的咖啡因。每次喝饮料之前都要看一下成份标签。

5. Stress &negative thinking

压力和消极想法

Stress is a large reason why many people find it difficult to sleep. One of the worse thingsyou can do is be stressed before bed. Stress proces chemicals that physically stop us fromsleeping. Try and clear your mind before bed time and make an effort to think positive thoughtsthat aid sleep.

压力是造成人难以入眠的重要原因。在上床睡觉前带着太大压力就更加糟糕了。压力会使人分泌出某些从生理上阻止睡眠的化学物质。尝试在睡前清空所思所想，努力朝有助于睡眠的积极方面想吧。

6. Too much light

光线太亮

Our bodies depend on ‘sleep signals’ to fall asleep and one of those signals is darkness.Make sure your room is as dark as possible before trying to get to sleep. Even a thin stream oflight coming in through your window can disrupt your pinealgland’s proction of sleephormones and therefore disturb your sleep rhythms, so make sure your blinds are closed!

我们的身体依靠“睡眠信号”来入睡，其中一个信号就是黑暗。所以在睡觉前要确保房间光线尽可能暗。即便是透过玻璃窗射进来的一小束光线也可能会干扰人的松果体分泌睡眠荷尔蒙，从而干扰睡眠生物钟。因此要保证关上百叶窗!

7. Sugar before bedtime

睡前摄取糖分

Sugary snacks before bedtime are a really bad idea. The sugar can disrupt the chemicals inyour body causing you to wake up ring the night. Limit all late night sweet treats – if you’rehungry go for a protein based snack instead.

睡前吃含糖的零食真的是个坏主意。糖会破坏人体体内的化学物质，导致人在夜间醒来。因此要控制晚间吃甜食的量，如果你饿了，去吃一些蛋白质为主的零食吧。

8. Alcohol before bedtime

睡前喝酒

Alcohol is a sedativeand therefore people get fooled into thinking it will help them get agood nights sleep. The reality is that it may initially ince sleep, however it usually drasticallyimpairs sleep ring the second half of the night which leads to interrupted sleep patterns thatwill leave you feeling fatigued in the morning (not to mention the hangover!)

酒精有镇定作用，因此人们会误以为酒精能帮助睡眠。实际上酒精可能会在一开始促进人睡眠，但是它也常会在后半夜严重影响人的睡眠，打乱人的睡眠模式，让你在早上觉得很疲乏(更不用说还有宿醉了)。

9. TV in the bedroom

卧室里摆放电视

It can be easy to fall asleep on the couch in front of the TV. It’s important we don’t try andreplicatethis strategy in the bedroom though. The bedroom must only be associated withsleep. When you start to introce mental stimulation such as a TV this can severely disruptyour sleep patterns.

坐在电视机前的沙发上很容易睡着，但重要的是我们不能在卧室里尝试这一 方法 。卧室应当只与睡眠有关，把电视机之类刺激神经的东西放进卧室会严重打乱你的睡眠模式。

10. Worrying about sleep

担心睡眠

If you’ve had a few bad nights sleep, then the worst thing you can do is worry too muchabout it. When we place too much focus on sleeping this can cause anxiety and only make theproblem worse. Try to go with the flow and let your body naturally get into a healthy sleeppattern.

当你几天都睡不好后，最糟糕的事情就是你还总是担心自己的睡眠。当我们把注意力过多放在睡眠上时，就会导致焦虑，而焦虑只会让睡眠问题变得更严重。试着顺其自然地让身体进入健康的睡眠模式吧。

医学科普文章英文版2

5个有害健康的常见生活习惯

Everyday health hazard 1: Lying

日常健康危害之1：撒谎

Whether you’re complimenting your best friend’s unflattering hairdo or “improvising”on thecost of your new designer shoes, we all tell the odd fibfrom time to time. However, accordingto research, those little white lies could be more harmful than you think. Lying can generatefeelings of stress which are damaging to your health, and a study by researchers at theUniversity of Notre Dame found that when people reced the amount of lies they told theysuffered from less headaches, sore throats and anxiety.

无论你是在恭维你最好朋友那不讨喜的发型，或临时冲动购物买下最新名牌鞋，在这时候我们通常会撒一些古怪的小谎。但是最新的研究显示，即便是那些无害纯洁的小谎言也会带来意想不到的危害。撒谎会产生压力，而压力会损害你的健康。一项来自圣母大学的研究发现，当人们减少说谎话的次数时，他们就会减少头疼、咽喉疼痛和焦虑的患病次数。

Everyday health hazard 2: Eating at your desk

日常健康危害之2：办公桌上吃饭

If you’re having a busy day in work, it can be tempting to skip your lunch break and eat atyour desk. However, missing out on breaks is not only bad for your stress levels, eating whiledistracted may also mean you are more likely to overeat. Furthermore, spending your lunchhour at your desk can lengthen the time you are physically inactive and also expose you toharmful bacteria. According to a study by the University of Arizona, your work station containsnearly 400 times more germs than the average toilet seat, making it a less than ideal place fordining.

如果你工作忙绿，你的午餐休息时间可能没了，就不得不在办公桌上吃午饭。然而错过了休息不仅会让你感到压力紧张，而且心烦意乱的你在这时候吃饭会导致你进食过量。此外，在办公桌上吃饭，你的身体不活动的时间就会增加，还会让你暴露在有害的细菌环境中。亚利桑那大学的研究 报告 显示，办公环境细菌量是马桶座圈平均量的400倍，你还想在这样的地方进餐吗?

Everyday health hazard 3: Housework

日常健康危害之3：家务

Need an excuse to put your feet up? Well, good news: research suggests that leaving thehousework for another day could give your health a boost! Research results published in theJournal of Family Psychology revealed that doing housework when you get home from workprevents levels of cortisol (the stress hormone) from lowering and reces recovery fromstress. However, stress levels for both men and women were lowered by housework beingcompleted – just so long as they weren’t the ones doing it. Look after your health by takingturns to do the housework with other members of your household if possible, and take timeout to relax afterwards.

想找个理由不做家务?那有好消息了：研究显示，人们把 家务活 留到第二天做，身体会更棒!《家庭心理学》刊登了这篇研究报告，报告结果显示，当你下班回家后做家务活，皮质醇(压力荷尔蒙)的释放会被抑制。皮质醇能降低压力，还能缩短受压后的恢复时间。但是当家务被完成后，男性和女性的压力水平都会降低——只要做家务的不仅仅只有他或她。可以的话，你可以和家人分担家务，这样能让自己保持健康，还有家务过后记得要抽时间休息啊。

Everyday health hazard 4: Using cash machines

日常健康危害之4：使用自动提款机

Withdrawing money from ATM machines is a common habit for most of us. However,cleanliness tests in Britain have revealed that cash machines are just as dirty as public toilets,and many of us are failing to wash our hands after using them. Experts assessed swabs fromthe key pads on cash machines and also from nearby public toilets and found that they bothcontained the same types of bacteria known to cause sickness. To look after your health, usean antibacterialhand gel once you have made your withdrawaland after handling money.

从自动提款机中提起现金是大多数人的日常习惯。然而一项英国的洁净测试显示，提款机和公厕一样脏，而且，大多数人在使用后都不会去洗手。专家们在自动提款机的键盘和附近的公厕中提取了样品，发现两者均含有同样致病菌。为了您的健康，请在提款和处理钱款后使用抗菌洗手液清洗。

Everyday health hazard 5: Cancelling plans

日常健康危害之5：取消计划

Find yourself frequently cancelling plans and ling out on social events to have a bit oftime to yourself? Then it may be time to pay some attention to your social life. While a bit of‘me time’ is essential to good mental and physical health, too much time on your own canactually be bad for you. Research suggests that having strong social bonds promotes brainhealth, reces feelings of depression and stress and encourages you to look after yourhealth. In fact, a study found that having few friends affects your longevityas much as smoking15 cigarettes a day.

发现自己频繁取消计划，还想摆脱社交活动，只为挤出属于自己的空闲时间?那么现在是时候在自己的社交生活中多多用心。拥有少量属于自己的时间，对于精神和身体方面是非常有益处的，但是太多属于自己的时间，反而有可能会害了你。研究显示，较强的社交联系有益于大脑的健康，同时能避免抑郁、降低压力，还能鼓励自己多关注自身的健康。事实上一项研究发现，没有朋友也会减少你的寿命，效果相当于1天抽15根烟。

医学科普文章英文版3

睡前玩iPad会影响睡眠质量

Using tablet computers like Apple’s iPad and Samsung’s Galaxy Note just before bed can lead toa poor night’s sleep, according to research.

More and more people are taking their tablets to bed with them to surf the web, checkFacebook or email before switching off the light.

But researchers are warning that the blueish light their screens emit can stop users getting agood night’s sleep.

That is because this type of light mimics daylight, convincing the brain that it is still daytime.

Blue light suppresses proction of a brain chemical called melatonin, which helps us fall sleep.This is because our brains have evolved to be wakeful ring daylight hours.

By contrast, light which is more orange or red in tone does not suppress melatoninproction, perhaps because our brains recognize it as a cue that the day is ending.

Neurologists have known for years that staring at screens late in the evening can disrupt sleep- be they television screens, computer screens or mobile phone screens.

However, because mobiles and tablets are by nature portable - not to say addictive - morepeople are taking them into the bedroom.

Users also tend to hold them much closer to their eyes than a computer or television screen.

Researchers at the Lighting Research Centre, at the Rensselaer Polytechnic Institute in NewYork, are warning that looking at tablet displays for more than two hours “leads to asuppression of our natural melatonin levels as the devices emit optical radiation at shortwavelengths” - in other words, they emit bluer light.

They say: “Although turning off devices at night is the ultimate solution, it is recommendedthat if these devices are used at night displays are dimmed as much as possible and that thetime spent on them before bed should be limited.”

They drew their conclusions after measuring melatonin levels in 13 volunteers, after they hadspent time viewing iPads at full brightness at a distance of 10 inches, for two hours.

Melatonin levels were significantly lower after they had done this, than they were after thevolunteers had viewed their iPads for the same time, but while wearing orange glass goggles,which cut out the blue light.

They wrote in the journal Applied Ergonomics that tablet makers could "tune the spectral powerdistribution of self-luminous devices" so that they disrupted the sleep patterns of users less.

It is not just a good night’s sleep that could be jeopardized by too much late night screentime.

Researchers know that persistent disruption to sleep patterns can lead to an increased risk ofobesity, and even breast cancer.

However, these studies tend to be comparisons of those with chronic sleep disruption, suchas long term shift workers, with those who have normal sleep patterns.

B. 英语科普类文章

科普 教育 对我国小康社会、和谐社会的建设有着重要的意义。下面是我带来的英语科普类 文章 ，欢迎阅读!

英语科普类文章1

听点小音乐 轻松学分数

Stuck on a tricky math problem? Start clapping. Grade school kids who learned about fractions through a rhythm-and-music-based curriculum outperformed their peers in traditional math classes. The work is inEcational Studies in Mathematics.

被一条数学题难住了?拍拍手试试吧。研究表明，小学生在有节奏感的音乐背景下学习分数知识的效果会好于传统课堂(具体研究发表在《数学教育研究》上的《学术性音乐：如何用音乐辅助三年级小学生学习基础分数》一文，作者：苏珊·科瑞等)。

Fractions let you divide up a measure of music into notes of varying length. For example, one four-beat measure could contain a single whole note held for all four beats, two half notes of two beats apiece, four quarter notes of a beat each, and so on. In the Academic Music program, based on the Kodaly method of musical ecation, students clap, drum and chant to memorize the lengths of musical notes—then solve problems in which fractional notes must add up to a full measure of music.

根据分数的概念，一节音乐可分成长短不一的几串音符。例如，一节四拍子的调子可包含一个代表四拍子的全音符，两个各代表一个二拍子的二分音符，四个各代表一个一拍子的四分音符……以此类推。在“学术性音乐”项目中，研究人员以科达伊的音乐教育 方法 为基础，让学生通过打拍子、敲鼓、合唱记住各音符的长度，学生必须把这些片段加起来，才能得到一节完整的音乐——如此实践可解决学生对分数的疑惑。

Sixty-seven students participated in the study. Half did math problems using the Academic Music system. And after six weeks, the students in the music program averaged 50 percent higher on tests than did the kids in regular math class. Fractions create a solid foundation for further math ecation—so mastering them is music to ecators' ears.

有67名学生作为实验对象参与了本次研究，其中有一半在“学术性音乐”体系下解决数学问题。六周后，他们在测试中的得分要比普通班级中的学生平均高50%。分数是进一步进行数学知识教学的基础——如此看来，这还多亏了教育者的耳朵。

英语科普类文章3

十万年前的颜料工作室

Archeologists have discovered a paint proction studio in an ancient South African cave A new archaeological find may signify one of the great leaps in human cultural and cognitive history. Because researchers have discovered a 100,000-year-old art studio. It was known that ochre—rock with red or yellow pigments—was used for paint even that far back in history. But there was scant evidence for how it was prepared and handled. Then, in 2008, researchers uncovered an ochre mixing kit in a South African cave. They found two abalone shells, most likely used for paint mixing and storage. They also found ochre, bone, charcoal, grindstones and hammerstones. The researchers say the ochre was probably rubbed on quartzite slabs to create a fine powder. It was then mixed and heated with other crushed substances, including other stones or mammal-bone. Microscopic striations on the inner abalone surface likely are likely scrape marks left ring paint mixing. The research was published in the journal Science. The paint may have been used for body adornment or for long-gone artwork. And the presence of this paint-proction laboratory indicates that the early humans knew basic chemistry and could plan for the future.

考古学家在南非的一个古老洞穴中发现了一个油漆制作工作室。这个新的考古发现可能是人类 文化 和认知历史的最伟大的跨越之一。因为研究人员发现的这个工作室产生于十万年前。众所周知，拥有红色或黄色色素的赭石岩一直被广泛运用于绘画中，但却少有证据显示它是如何制作并运用的。2008年，研究人员 在南非的山洞中发现了赭石混合工具， 两个可能用于调漆和储存的鲍鱼壳，除此之外他们还发现了赭石，骨头，炭笔和石锤。研究人员称，这些赭石很有可能经过在石英岩板上仔细研磨后，得到上等的粉末，然后再与 其他石头或者是哺乳动物的粉末混合并加热。用显微镜观察鲍鱼壳的内表面，你可以发现一些刮痕，这些都有可能是在混合颜料的过程中留下来的。这个发现已经被刊登在科学期刊上。这些颜料可能一直被运用在人体 彩绘 和长久失传的艺术品上。而且这些颜料制作工作室的存在表明了早期人类对化学已有了基本的了解并具有了规划未来的能力。颜料工具的一小步，人类历史的一大步——辛西亚莫。

英语科普类文章3

你知道发烧的妙处吗?

Fever can play a variety of roles, such as inhibiting pathogen replication. It also apparently increases the population of killer T cells of the immune system. Christopher Intagliata reports.

发烧有多种不同的作用，如抑制病菌复制。它还可以显著增加免疫系统中杀伤性T细胞的数量。

I've always thought that when I get a fever, it's my body trying to make things uncomfortable for the invading pathogen. And that's often true—higher temperatures can inhibit the bad guys' ability to replicate. But my fever may actually be a one-two-punch. In addition to slowing down the invader, the heat helps the immune system recruit more troops for a counter-attack. That finding appears in the Journal of Leukocyte Biology.

我很早就知道，发烧的时候，其实是我的身体正在对入侵的病原体做出抵抗。这是事实---高温可以抑制坏病菌复制的能力。但发烧更是一个组合打击。除了减缓病原体的入侵，高温可以帮助免疫系统召集更多的部队做出抵抗。这一研究发表在《白细胞生物学杂志》。

Researchers warmed up one group of mice to body temperatures of about 103 degrees Fahrenheit. They left another group at normal core temperature—about the same as ours. Then they injected both groups of mice with an antigen, a substance that attracts the attention of the immune system.

研究人员将一组老鼠的体温升高到103华氏度，另外一组保持正常体温---大约是人体温度。然后向这两组老鼠的体内注射抗原——一种会引起免疫系统反应的物质。

Blood samples taken three days later revealed that the feverish mice had nearly twice as many killer T-cells: the kind of immune cells that can hunt down infected cells or tumor cells, and slaughter them.

三天后，这两组老鼠的血样表明，体温较高老鼠组体内的杀伤性T细胞是正常组的2倍，这种免疫细胞可以追踪感染细胞或癌细胞，并将其消灭。

So when you're sick and you get the chills, the authors say, your body may be trying to tell you to hop under some blankets. Lie down, warm up and send a message. The heat is on.

所以，当你生病或感到寒冷时，表示你的身体正直向你传达信息--裹条毯子。躺在床上吧，热起来，身体自会做出反应。热度来袭啊。

C. 英语阅读课常用的教学方法有哪些

1.愉快教学法
教师在教学中，应使整个教学都弥漫着一种和谐、融洽、振奋、饱满的情绪气氛。同时，在教学时，使学生进入语境，创造情景，帮助学生通过英语直接理解教学内容意思，养成用英语思维的习惯。其次，在教学过程中，安排一些兴趣活动。如：唱歌、游戏、饶口令等。运用这些灵活的教学方法，让学生在“乐中学”又在“学中乐”。在我们的日常生活中，成功与快乐总是相伴而行的。那么，教师在教育中就应该运用好表现──成功──快乐三步曲方法，尤其对后进生，要多给予肯定评价。
2.演示法
演示可以使学生获得丰富的感性材料，加深对事物的印象，特别是教学一些字母、单词时，利用实物、图片、表情动作等创设大量的视觉情景，对儿童反复进行大量的可理解性语言输入，进行反复多遍的听说活动。丰富学生的感性认识，增强演示效果，而尽可能快的使学生的认识上升到理性阶段，形成理性阶段，形成概念，掌握事物的本质。例如：在学习字母时要充分利用卡片;在新授单词的时候可以用实物来演示，例如“pen”“bag”“book”等。在新授的Isita...”时，可以直接利用学生手中的实物来进行对话，并且鼓励每一个孩子积极参加到学习中去，要以满腔的热情去对待每一个孩子，对他们学习中的每一个进步及时给予肯定、表扬、奖励等，让所有的学生在对自身学习的满足中提高学习的积极性。
3.模仿练习法
学习英语模仿练习是很重要的方法，小学生要说得准确，首先必须看得准，听得准。因此，教师在范读字母、单词或句子之前，要让学生听老师的读音，看老师的口形，并鼓励学生大胆开口，敢于大声讲英语，说错了及时纠正，并注意将正确的音与错误的音进行比较，反复训练，以免在语音上给学生留下后患。另外，应鼓励学生课下尽量用所学过的常用表达方式进行相互对话。因为我们不是单纯为学语言而教语言，而是在用中学，在学中用，培养运用语言的能力。
4.讲授法
英语并不像我们的母语──汉语那样从小就开始学说、理解和运用。而英语对于我们小学生来说就显得特别难学。所以，教师进行一定的讲解，讲述和讲读是十分有效的。但是，讲授法并不是照本宣科，单板、生硬地向学生灌输，而是讲授要有一定的启发性，更要穿插一些其他的教法与之结合起来。

D. 科普类英语文章

随着科学技术的飞速发展和全球化进程的不断加快，科普 文章 在向社会大众普及科学技术知识，提高公众科学素养等方面发挥着举足轻重的作用。下面是我带来的科普类英语文章，欢迎阅读!

科普类英语文章

生物与环境平衡的危机

The history of life on earth has been a history of interaction between living things and their surroundings. To a large extent, the physical form and the habits of the earth’s vegetation and its animal life have been molded by the environment. Considering the whole span of earthly time, the opposite effect, in which life actually modifies its surroundings, has been relatively slight. Only in the present century has one species man acquired significant power to alter the nature of his world.

During the past quarter century this power has not only become increasingly great but it has changed in character. The most alarming of all man’s assaults upon the environment is the contamination of air, earth, rivers, and sea with dangerous and even lethal materials. This pollution is for the most part irrecoverable. In this now universal contamination of the environment, chemicals are the sinister partners of radiation in changing the very nature of the world the very nature of its life. Chemicals sprayed on croplands or forests or gardens lie long in soil, entering into living organisms, passing from one to another in a chain of poisoning and death. Or they pass mysteriously by underground streams until they emerge and combine into new forms that kill vegetation, sicken cattle, and work unknown harm on those who drink from once pure wells. "Man can hardly even recognize the devils of his own creation," as a scientist has said.

It took hundreds of millions of years to proce the life that now inhabits the earth. Given time not in years but in millennia life adjusts, and a balance has been reached. But in the modern world there is no time.

The rapidity of change follows the impetuous pace of man rather than the deliberate pace of nature. Radiation is now the unnatural creation of man’s tampering with the atom. The chemicals are the synthetic5 creations of man’s inventive mind, having no counterparts in nature.

To adjust to these chemicals would require not merely the years of a man’s life but the life of generations. And even this, were it by some miracle possible, would be futile, for the new chemicals come from our laboratories in an endless stream; almost five hundred annually find their way into actual use in the United States alone. Among them are many that are used in man’s war against nature. Since the mid 1940’s over 200 basic chemicals have been created for use in killing insects, weeds, and other organisms described as "pests."

It is not my contention that chemical insecticides must never be used. I do contend that we have put poisonous and biologically potent chemicals indiscriminately into the hands of persons largely or wholly ignorant of their potentials for harm. We have subjected enormous numbers of people to contact with these poisons, without their consent and often without their knowledge. I contend, furthermore, that we have allowed these chemicals to be used with little or no advance investigation of their effect on soil, water, wildlife, and man himself. Future generations are unlikely to forgive our lack of concern for the integrity of the natural world that supports all life.

地球上生命的历史一直就是一部生物与其环境相互作用的历史。在很大程度上，地球上动植物的形态以及习性都是由外部环境所塑造的。考虑到地球上生命存在的整个时间，相反作用，即生命对其周围环境的实际改变作用，却相对很小。只有在当前这个世纪(指20世纪)才有一个物种--人类，获得了强大的力量，改变了其所生存的世界的自然状态。

在过去的1/4世纪中，这种力量不仅日趋强大，而且其性质也发生了变化。在人类破坏环境的种种行为中，最令人担忧的是人类向大气、土壤、河流以及海洋中排放危险甚至致命物质，而当今这种污染在很大程度上是无法挽救的。在当今这种对环境的普遍污染中，化学制品与辐射狼狈为奸，改变着地球的自然状态，也就是改变着地球上生命的自然状态。喷洒到农田、森林或者花园里的化学物质长期滞留于土壤中，渗入有机体内，并彼此相传，形成了一个中毒与死亡的链条。化学物质还神秘地通过地下水传递，最终以新的形式出现并结合，使植物毒死，牲畜害病，并使饮用一度纯净的井水的人遭受了不明之害。正如一位科学家所言：“人类甚至对自己创造的恶魔都不认识。”

地球历经了许多亿年才创造了栖息其上的生命。经过了一定时间--不是以若干年计而是以若干千年计的时间--生命开始适应环境，并形成了一种与环境的平衡。但是在现代世界中，时间这一因素已经没有了。

环境改变的速度不再顺从大自然从容不迫的节奏，而是顺从人类急切匆匆的步伐。辐射是当今人类通过支配原子而得到的一种非自然的创造物。化学制品则是人类有发明创造力的头脑创造出来的合成物，在自然界本无相应的东西。

为了适应这些化学制品，人类需要付出的时间不会只是一个人一生的时间，而是几代人的时间。而即使这样，就算出现奇迹成为可能，这种适应也是徒劳的，因为新的化学制品从我们的实验室中源源不断地涌出。仅在美国，每年就有大约500种化学制品投入使用，其中许多是用于人类对自然的战争中。从20世纪40年代中期起，人类已经创造了200多种基本化学制品用来消灭昆虫、野草以及其他所谓的“有害生物”。

我不是说人类决不能使用化学杀虫剂。我要说的是，我们不分青红皂白地将这些有毒的、具有强大生物功能的化学制品，交给了那些对这些制品的潜在危害基本上或者完全无知的人去使用。我们使众多的人接触这些有毒物质，却没有征得他们的同意，并常常将他们蒙在鼓中。我还要说的一点是，我们允许使用这些化学制品，却事先很少或者根本没有调查它们对土壤、水、野生生物以及人类自身造成的影响。我们缺乏对万物赖以生存的自然界生态统一的关心，对此，我们的后代是不可能原谅的。

科普类英语文章

基因技术能否使人更聪明?Get Smart

Many people dream of having a smarter brain. Princeton neurobiologist Joseph Z. Tsien found the key. In September he announced that he’d built a better mouse by altering a gene that affects learning and memory. A similar process of gene manipulation might conceivably be used one day to boost intelligence in humans.

The secret lies in a feature of brain cells called the nmda receptor, which Tsien likens[1] to a cylindrical tube or window that mediates[2] the flow of information. When the window is open, chemicals called neurotransmitters flow through easily and memory is registered and stored. But as organisms mature, the window begins to close. (This may explain why children lose their facility for learning new languages when they reach sexual maturity and why some people suffer memory loss as they age.)

Tsien noticed that the receptor worked more efficiently when teamed[3] with the gene NR2B, so he introced extra NR2B genes into a batch of fertilized mouse eggs. In a normal mouse, the memory window is open for just 150-thousandths of a second. In Tsien’s specially engineered mice, the window opens for 250-thousandths of a second, long enough to make a remarkable difference in memory retention. When he pitted[4] his mice against common mice, they won paws down. Ordinary mice could recognize a Lego block for 12 hours, but smart mice could remember the block for up to three days. "That’s a profound enhancement," Tsien says.

Can it be done with humans? Maybe, but genetic engineering will have to make some extraordinary advances first. And some thorny ethical issues will have to be resolved. Meanwhile, Tsien promises to keep his furry little geniuses locked up in a lab, far from your larder. "Otherwise," he says, "you might need a smart cat or a smart mousetrap to catch them."

许多人都希望自己能变成更聪明。普林斯顿神经生物学家Joseph Z. Tsien就找到了这把开启智慧之门的钥匙：他于九月宣布，通过改变影响学习和记忆能力的基因培养出了一只聪明的老鼠。类似的基因处理技术有望在未来日子里运用到人脑，以推动人类智慧的飞跃。

该技术的奥秘就在于名为nmda感受器的脑细胞的功能。Tsien将其比作一个传递信息流的圆柱通道或窗口。当窗口开放时，某种称为神经传递素的化学物质就能轻易流过，记忆因此登记并存储了下来。然而，当器官成熟时，这扇窗口就开始关闭。(这也能解释为何 儿童 长大后(性器官成熟之时)会失去掌握新语言的能力，以及为何某些人年老时会患失忆)。

Tsien注意到，当感受器与名为NR2B的基因协作时效率会更高。因此，他将NR2B基因植入一批老鼠的受精卵中。一只普通老鼠的记忆之窗仅开放千分之150秒。而经Tsien植入基因的老鼠，记忆之窗能开放千分之250秒，这已经能够使其 记忆力 发生惊人的改变。当他让自己的老鼠与普通老鼠互斗时，它们竟能轻而易举地取胜。普通老鼠能够保留关于Lego block的记忆12小时，而聪明的老鼠居然能将记忆保持三天。“这可是一个意义深远的进步。”Tsien这样说。

那么，人类也能接受这种基因移植吗? 或许可以，但前提是基因工程得首先做出非凡的成就，还必须解决一系列棘手的伦理问题。Tsien保证他一定会将那些披着毛皮的小天才锁入实验室，远离人们的食品柜。“否则，”他说，“为了捉住他们，人们就不得不去寻找更聪明的猫或者功能更强的捕鼠器了。”

科普类英语文章

食用转基因食品安全吗?Food Safe To Eat?

Traditional plant breeding involve s crossing varieties of the same species in ways they could cross naturally.For example，disease-resistant varieties of wheat have been crossed with high-yield wheat to combine these properties.This type of natural gene exchange is safe and fairly predictable.

Genetic engineering(GE)involves exchanging genes between unrelated species that cannot naturally exchange genes with each other.GE can involve the exchange of genes between vastly different species――e.g.putting scorpion toxin genes into maize or fish antifreeze genes into tomatoes.It is possible that a scorpion toxin gene，even when it is in maize DNA，will still get the organism to proce scorpion toxin――but what other effects may it have in this alien environment?We are already seeing this problem――adding human growth hormone genes to pigs certainly makes them grow――but it also gives them arthritis and makes them cross-eyed，which was entirely unpredictable.

It will be obvious，for example，that the gene for human intelligence will not have the same effect if inserted into cabbage DNA as it had in human DNA――but what side-effect would it have?In other words，is GM food safe to eat?The answer is that nobody knows because long-term tests have not been carried out.

Companies wanting a GM proct approved in the UK or USA are required to provide regulatory bodies with results of their own safety tests.Monsanto’s soya beans were apparently fed to fish for10weeks before being approved.There was no requirement for independent testing，for long-term testing，for testing on humans or testing for specific dangers to children or allergic people.

The current position of the UK Government is that“ There is no evidence of long-term dangers from GM foods.”In the US，the American Food and Drug Administration is currently being prosecuted for covering up research that suggested possible risks from GM foods.

传统的植物培育 方法 ，是依照植物自然杂交的方式，进行相同物种的人工杂交。比如，抗病小麦同高产小麦杂交，形成了一种具有双重特性的新的小麦品种。这种自然的基因交换既安全，又具有相当的可预见性。

基因工程是在彼此毫无关系的物种之间，相互交换在自然条件下无法交换的基因。它可在有巨大差异的物种之间进行基因交换。比如，将蝎子毒素基因注入玉米，或者将鱼防冻基因注入西红柿。即使在玉米DNA中，蝎子毒素基因依然可能获得有机组织产生蝎子毒素。但是在这种异质的环境中，这种基因产品会有什么其他作用吗?我们实际上已经发现这个问题：将人类生长荷尔蒙基因植入猪的体内，一定会使猪的生长加速，但是同时也使猪患上了关节炎和内斜视，而这一切是完全无法预测的。

打个比方，人类的智力基因显而易见在人体DNA内和注入卷心菜DNA后的作用是不同的。但将它植入卷心菜中会产生什么样的副作用呢?换句话说，食用转基因食品安全吗?没有人知道答案，因为人们尚未进行长期的测试。

在英国或者美国，一个公司如果希望其转基因产品获得批准，它必须向管理机构提供本公司转基因产品安全测试的结果。Monsanto的大豆在获得批准之前，曾用了10周时间进行喂鱼试验。目前，尚无要求对转基因产品进行独立测试、长期测试、人体测试，或者就其对儿童及过敏者所造成的特定危险进行测试。

英国政府目前的态度是：“尚无证据表明食用转基因食品存在长期性的危险。”在美国，人们正在起诉美国食品药品管理局掩盖转基因食品安全性的研究结果，这些研究结果表明，食用转基因食品可能导致危险。

E. 高中英语的较难科普阅读理解该怎样处理

一般都是先看题目，对题目有个大致方向。
然后快速浏览一遍文章，因为科普说明文难度大，专版有名词多，但权是文章脉络很清晰，理解难度不大，所以只要浏览一遍，把握住中心思想。
说明文的选择题大多为细节理解题，所以要带着题目去文章中找答案，每一个选项一一对应，在文章中画出来。
差不多就是这些了。
但是这个方法只针对说明文科普文，别的类型的文章还是需要搞懂文章大意再去做题目。

F. 高中英语科普阅读题技巧

感觉科普文章一般结构比较清晰，建议读的时候即使不能做到每个词内都弄懂，至少也要弄懂每段容的大意（这个一般在开头句或者总结句能找到）。回答问题的时候看大概在哪个段落，然后再找就可以了。如果实在文章读不下去，不妨先看一眼问题，这样读起来可能更有目的性。
个人经验，希望有帮到你

G. 医学英语科普文章

身体健康是从物质意义对人的生活质量的理解。下面是我带来的 医学英语 科普 文章 ，欢颂慧羡迎阅读!

医学英语科普文章1

话说水果、蔬菜和野拍疾病

Five-a-Day "No Benefit" 每日五份没效果

碧裂One of the most commonly-held beliefs regarding health and nutrition in the UK has beenfound to be untrue, according to a new scientific study.

For many years British people have been recommended to eat at least 'five-a-day' – that isfive items of fruit or vegetables every day in order to improve their health and rece thelikelihood of illness, in particular cancer.

The recommendation was first put forward in 1990 by the World Health Organizationwhich said that the 'five-a-day' diet could prevent cancer and other chronic diseases.

Since then the advice has been a mainstay of public health policies in many developedcountries, such as the UK, where the population eat a high proportion of junk food.

Many health campaigns have promoted the advice, and indeed much food packaging inBritain states how the contents will constitute part of your five-a-day.

However, a study of 500,000 Europeans from 10 different countries refutes the commonly-believed suggestion that up to 50% of cancers could be prevented by increasing the public'sconsumption of fruit and vegetables.

Instead the study, which is led by researchers from a well-respected New York medicalschool, estimates that only 2.5% of cancers could be averted by eating more fruit and veg.

It seems that the key to avoiding cancers is to have an overall healthy lifestyle whichincludes not smoking or drinking a lot of alcohol, taking exercise and avoiding obesity.

But medical charities have spoken out to remind people that diet is an important factor instaying healthy, and that even a 2.5% rection in cancers is still a positive step.

Cancer Research UK said: "It's still a good idea to eat your five-a-day but remember thatfruits and vegetables are pieces in a much larger lifestyle jigsaw."

医学英语科普文章2

致命的军团杆菌

legionnaires' disease is a serious and sometimes fatal form of pneumonia. legionnaires' disease is caused by infection with legionella bacteria which are found naturally in the environment and thrive in warm water and warm damp places. man-made water systems sometimes provide environments that let legionella bacteria increase to large numbers. these man-made systems include showers, spa pools, fountains, and air conditioning cooling towers. people usually get legionnaires' disease by breathing in mists that come from a water source contaminated with legionella bacteria.

an estimated 8,000 to 18,000 people get legionnaires' disease in the united states each year. some people can be infected with legionella bacteria and have mild symptoms or no illness at all. patients with legionnaires' disease usually have fever, chills, and a cough, which may be dry or may proce sputum. some patients also have muscle aches, headache, tiredness, loss of appetite, and, occasionally, diarrhea. from the time of infection with legionella bacteria, it takes 2-10 days for symptoms to appear. in most cases, symptoms begin after 5-6 days. legionnaires' disease is treated with antibiotics, such as erythromycin. the earlier that treatment is begun, the better the outcome.

the first known outbreak of legionnaires' disease was in philadelphia, usa, in 1976. a total of 221 people contracted the disease and 34 died. most of those that died were legionnaires and that's how the disease got its name. the second largest outbreak was at the stafford hospital in england in 1985; a total of 101 people contracted the disease and 28 died.

军团病是一种非常严重的、有时可以致命的肺炎。军团病是由军团杆菌引起，这种细菌产生在自然环境中，在温水里及潮热的地方蔓延。人工供水系统有时也能为军团杆菌的大量繁殖提供生存环境。这些系统包括淋浴器、矿泉池、喷泉以及空调设备的冷却水塔。人们通常是由于呼吸了被军团杆菌污染的水源散发的水雾而传染上军团病的。

据估计，在美国每年都有国每年都有8000~18000人感染上军团病。有些军团病感染者所表现出来的症状比较温和，甚至根本就没有得病的迹象。军团病患者通常有发烧、畏寒及干咳或咳痰等表现。部分患者还有肌肉疼痛、头痛、疲劳、食欲不振及偶尔腹泻等症状。这种病的潜伏期约为的潜天。许多病例表明，出现症状需要状需要5~6天的时间。军团病可以用红霉素等抗生素进行治疗，越早治疗效果越好。

军团病已知的首次爆发是在发是1976年美国费城，221人感染疾病，其中死亡34人。由于大多的死者都是军团成员，因此称为军团病。该病的第二次大爆发是1985年在英国的斯塔福德医院。这次101个被感染者中有28人死亡。

医学英语科普文章3

女性最佳生育年龄

For women who want to have children, planning the right time is a difficult decision. In recent years, many women have opted to put off having kids until their late 20s and well into their 30s — focusing on finishing school, building their careers, traveling, and maybe even paying down their student loans before taking the leap into parenthood. Statistics show that women are waiting longer and longer to have kids — the current average age of first-time moms is up to 26.3, up from 24.9 just 15 years ago.

对于想要孩子的女性来说，合适的时间是一个艰难的决定。近年来，很多女性选择在20岁末甚至30多岁才要孩子，主要原因是她们忙于完成学业、发展职业生涯、旅行、甚至选择在为人父母之前偿还助学贷款。数据表明，女性的生育年龄越来越晚——生第一胎的平均年龄从15年前的24.9岁上升到现在的是26.3岁。

The choice to have children is extremely personal and of course there’s no wrong answer when it comes to being ready to be a mom. But according to Dr. Gillian Lockwood, medical director at the Midland Fertility Clinic in the UK, there is an ideal age when our bodies are best suited to pregnancy. Can you guess what it is?

要孩子的选择是一个非常私人的话题，选择什么时候做母亲都没有错。但是英国米德兰生育诊所的医学主任Gillian Lockwood表示，我们的身体有一个最佳的生育年龄。你能猜到是多少岁吗?

I’ll give you a hint: it’s when many of us have a quarter-life crisis. Also: when it finally becomes affordable to rent a car.

提醒一下：最佳的生育年龄是在大多数人的“青年危机”时，也是我们终于能租得起车的时候。

Yep. According to Lockwood, the ideal age to get pregnant is 25.

Lockwood表示，是的，最佳的生育年龄是25岁。

Unfortunately, says Dr. Lockwood, it’s also the age when motherhood is low on many women’s list of priorities. She explained in the Evening Standard:

Lockwood医生说，不幸的是，对很多25岁的女性来说，成为母亲并不在她们的优先任务清单上面。Lockwood医生在《伦敦标准晚报》上解释说：

“Age 25 is exactly the time when today’s young women have left university, are trying to get off on a good career, trying to pay back their student loans, trying to find someone who wants to have babies with them and trying to get on the housing ladder.”

“25岁的当代年轻女性刚刚大学 毕业 ，事业起步，忙于偿还助学贷款，找男朋友，努力买房。”

Dr. Lockwood also had some harsh words about fertility treatments being marketed as a viable option to women over 40. “The bleak reality is that the chance of IVF working with your own eggs once you are 40 is absolutely abysmal,” she said. “Would we let, yet alone encourage, patients to pay for an elective operation with a less than five percent chance of working?” While that may be Dr. Lockwood’s opinion, plenty of wannabe parents may be happy to take those chances.

Lockwood医生还批判了向40多岁女性推销不孕疗法的行为。“事实很残酷，如果你超过了40岁，用卵子进行体外受精的成功几率非常低，”她说。“谁会允许甚至鼓励病人做成功几率低于5%的择期手术?”这是Lockwood医生的观点，但仍有很多想要孩子的父母很愿意抓住这些机会。

It’s worth reiterating that there are so many factors that inform the choice to have kids and only you can decide when — and IF — you want to become a mother. Whether you choose to have kids at 20, 30, 40, or beyond; biologically, through a surrogate, or via adoption, always listen to your own body and make the decision that makes sense for your own life. You know what’s right for you.

特别强调的是，很多因素会影响要孩子的时间，只有你自己可以决定是否想成为一位母亲。不管你是在20岁、30岁、40岁甚至更大的年龄要孩子，是自己生、代孕还是收养，你都要听从自己的身体，做出对生活有意义的选择。你知道什么是最适合自己的。