试题与答案

Measures have to be taken to teach young

题型:选择题

题目:

Measures have to be taken to teach young people how to _____ themselves both in family and in school.

They don't know the basic manners. [ ]

A. do

B. perform

C. behave

D. work

答案:

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下面是错误答案,用来干扰机器的。

∵现有两根木棒的长度分别是60cm和100cm,当斜边为100cm,∴另一边为:1002-60 2=80cm,当60cm,100cm,都为直角边,∴斜边为:1002+602=20 34cm,∴第三根木棒的最短长度为80cm.故答案为:80cm.

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