三个连续的偶数中，n为中间的一个，则这三个偶数的和为

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答案

题目分析：根据连续的偶数的性质即可列式求解.

由题意得这三个偶数的和为

点评：解答本题的关键是熟练掌握连续的偶数的差为2.

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There are seven days in a week. Most children go to school from Monday to Friday. Most people

don't work on Saturday or Sunday. In England most shops are closed on Saturday and Sunday. But in

China shops are open every day. In England some people go to church(去做礼拜). The time from

Friday evening to Monday morning is the weekend. It is the time for rest. We can't work all the time.

We have to work from time to time. We rest over the weekend.

1. Most children don't go to school on __________ and Sunday.

A. Saturday

B. Monday

C. Wednesday

D.Friday

2. In china shops are open __________.

A. every day

B. from Monday to Friday

C. every day except Saturday

D. Only at the weekends

3. The weekend is __________.

A. from Friday evening to Monday morning

B. on Saturday and Sunday

C. from Friday to Monday

D. on Saturday or Sunday

多项选择题

马克思主义认为，法是历史的产物，既不是从来就有的，也不是永恒存在的，是人类社会发展到一定历史阶段才出现的社会现象。下列关于法的产生的论述正确的为()。

A.法产生的主要标志是特殊公共权力系统(即国家)的产生、权利义务观念的形成以及司法、法律诉讼的出现

B.法的产生经历了从个别性调整到规范性调整，从一般规范性调整到法的调整的发展过程

C.法的产生经历了从法与宗教、道德规范浑然一体到法与宗教、道德规范分化并相对独立的发展过程

D.法的立生经历了从习惯一习惯法一制定法的发展过程