实验过程中要注意安全，下列实验操作中安全的是( )

题干

A：将鼻孔凑到容器口去闻药品的气味

B：为了获得感性认识，可触摸药品和品尝味道

C：实验中，为保护眼睛，提倡使用防护眼镜

D：停止加热时，用嘴吹灭酒精灯

上一题下一题 0.0难度选择题更新时间:2019-04-26 04:12:06

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C

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John gets up early from Monday to Saturday, because he must go to school before 7:30 on weekdays(工作日) and go to Drawing Club at 8:00 on Saturday mornings. He usually goes to the bookshop on Saturday afternoon, and after dinner he watches TV until(直到) midnight(午夜).

He doesn't get up early on Sundays. John's parents both work on Sundays. John always watches TV after he gets up. Then he usually goes to KFC to have a hamburger and some juice for lunch. After that, he goes back home and starts to play computer games until his parents come back. He does his homework after dinner. He usually has lots of weekend homework, so he must spend three hours on it. He usually goes to bed at about 11:00 p.m. on Sundays. He often complains(抱怨) he has too much homework to do.

根据短文内容，选择最佳答案。

题干

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