英语五年级下册的年历怎么做

Ⅰ 五年级上册如果在上述日历中某个数列上三个相邻的日期之和为75你认为可能吗为

这样想来.设最小的日期是A,那么第源二个就是A+7,第三个就是A+7+7,那三个日期的和就是3A+21.
显然,A不可能是0.所以,三个日期的和就不可能是21了.
第二个问题也是这样解方程3A+21=75,A=18,得到三个日期是18,25,32,显然,日期不可能是32.所以也不能.

Ⅱ 五年级我学校的日历英文作文怎么写

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