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问题 单项选择题

肝炎病房常采用的消毒方式是

A．紫外线照射

B．甲醛40ml加高锰酸钾30g／m3熏蒸12～24h

C．过氧乙酸3g／m3熏蒸90min

D．臭氧处理

E．红外线照射

答案

参考答案：C

填空题
从所给单词中选出符合句子意思的单词，使句意完整。
sleeping,   complain,   relax,   seem,   alone,   pressure
1. Doctors say many children are under too much ______.
2. Don't always ______ about others, we should do it by ourselves.
3. When the UFO arrived, I was ______ late in my bed room.
4. Nowdays, many people feel tired, so we should learn to ______.
5. My grandmother lives ______, so I visited her every weekend.
6. Now parents ______ to push their children a lot more than before.
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选择题

创立了著名落体定律的是                 (    )

A．伽利略       B．牛顿        C爱因斯坦        D．玻尔

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