南极科考队在南极使用酒精温度计而不用水银温度计是由于酒精的【_爱下问搜题

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问题选择题

南极科考队在南极使用酒精温度计而不用水银温度计是由于酒精的【】

A．沸点低

B．沸点高

C．凝固点低

D．凝固点高

答案

答案：C

解：使用酒精温度计和水银温度计是根据液体热胀冷缩的性质工作的，要求酒精和水银都是液体，在南极气温比较低，酒精和水银都会凝固，此时指的是凝固点，酒精的凝固点比水银的凝固点低，不容易凝固，所以选择凝固点比较低的酒精温度计．

故选C．

阅读理解

阅读理解。

Things we do and don't do in our free time

	Mollie	Jack	Simom
play chess	√	√	×
play TV games	×	√	×
read books	×	×	×
watch TV	√	×	√
sleep a lot	√	√	√

do = √ don't do = ×

根据表中所给内容，判断下列句子正误，如果正确请在括号中写“T”，反之请写“F”。
( ) 1. Mollie plays chess, but Simon doesn't play chess.
( ) 2. Jack doesn't play TV games, Simon doesn't play TV games, either (也).
( ) 3. Simon watches TV. Mollie watches TV, too.
( ) 4. Jack doesn't watch TV. Mollie doesn't watch TV, either.
( ) 5. Mollie doesn't sleep a lot. Jack doesn't sleep a lot, either.

名词解释

纺织品夹缬与绞缬