搜题请搜索小程序“爱下问搜题”
问题 选择题

用灯帽熄灭酒精灯，该灭火方法的主要原理是

A．清除可燃物

B．降低可燃物着火点

C．隔绝空气

D．使可燃物的温度降到着火点以下

答案

答案：C

用灯帽熄灭酒精灯，主要是利用灯帽将氧气隔绝而灭火。

选择题

某一药品说明书中标有：本药品每克含碘150mg、锌1.5mg、锰1mg，这里所标的成分是指　　[ ]

A.分子　　　　

B.原子　　　　

C.元素　　　　

D.无法确定

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听力题

阅读短文，请根据所给中文正确拼写单词，使短文意思完整。每空限填一词。

One night a hotel caught a fire , and people in it ran out in their night clothes .

小题1:（幸运地），nobody was小题2:（受伤）.

Two men stood outside and looked at the fire.

“Before I came out,” said one, “I ran into some of the rooms and found a lot of money. People don’t think of money when they’re小题3:（害怕的）.When小题4:（任何人） leaves paper money in a fire, the fire burns it. So I took all the bills that I 小题5:（能够）find. No one will be poor 小题6: (因为) I took them.”

“You don’t know my work, ” said the 小题7:（另一个）.

“What is your work?”

“I’m a policeman.”

“Oh!” cried the 小题8:（第一）man. He thought 小题9:（迅速地）and said, “And do you know my work?”

“No,” said the policeman.

“I’m a writer. I’m always telling 小题10:（故事）about things that never happened.”
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