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问题 选择题

Those ____ things need water and air, or they will not keep themselves ____. [ ]

A. live; living

B. living; alive

C. alive; lively

D. lively; live

答案

答案：B

单项选择题

Water is (41) important of all the things we (42) and drink. Not many people understand this, (43) it’s quite true. The human body (人体) can go (44) food for a long time, but two (45) three days without water can usually (46) people die.
Many people don’ t understand how much water the human body needs to work well and many people do not drink (47) , even (48) hot weather.
Our body is (49) water, about 65% to 75%, ff we do not have enough water, we’ll (50) tired and many will get ill. So you see, how important water is to us all.

[A] much [B] enough [C] more
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问答题

简述课堂有效管理的目标。
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