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问题 填空题

在炎热的夏天中午，取两只相同的茶杯，盛入等量清水，将A杯盖上杯盖，B杯敞开，如图所示．将它们放在通风良好的室内桌上，经过两个小时，______杯中的水温较低，这是由于这杯水______（填物态变化的名称）更快所致．

答案

敞开的杯子B上方的空气流动速度大，蒸发就快，而蒸发属于汽化现象，需要吸热．

故答案为：B； 汽化．

单项选择题

妇科腹部手术病人术前练习的内容不包括（）。

A.床上使用便器

B.深呼吸

C.床上进食

D.床间搬运

E.有效咳嗽
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填空题

根据短文内容选择方框内的单词，并用其正确的形式填入空白处，使补全后的短文意思通顺，语法正确，结构完整。

I think it is easy to live a low carbon life if you want to make our life better. Here are some _____小题1:____ of advice: Travel by bus, bike or on foot as much as possible and ask our parents to drive as little as possible.

Plant trees as many as you can. Trees can help to make the air cooler in summer. ___小题2:____ the lights if it isn’t necessary to keep them on.

Don’t waste the water, oil, _____小题3:___ etc. Of course, there are many __小题4:______ things we can do in our daily life. After all, the earth is our common home. If everyone _____小题5:____ small changes, we can make a difference.
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