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问题 单项选择题

炸药在井下30m处爆炸，井口检波器记录的井口时间为20ms，波传到地震面的速度是（）。

A.150m/s

B.1500m/s

C.300m/s

D.3000m/s

答案

参考答案：B

阅读理解

根据短文，圈出正确的单词。

Damings Diary

                                                                                     Wednesday, Rainy

   Today I got two letters in English. One is from Lingling in England and one is from my cousin in America.

Lingling l.(went/goes) to a children's theatre last week. The Show 2.(was/is) very funny. She 3.(laughed/is

laughing) a lot. They 4. (eat/ate) hamburgers and chips then My uncle 5.(read/is reading) a book about

Chinese history. He 6.(ask/is going to ask) me some questions.  I 7.(brought/am going to Bring) some CDs

of Chinese songs for them tomorrow.
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单项选择题

人际交往是人所特有的一种（）

A.生理需要

B.精神需要

C.物质需要

D.以上都不是
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