单选题：-How amazing it is that astronauts are exploring outer space

题目内容：

-How amazing it is that astronauts are exploring outer space!
-It’s a challenge, I guess, man against nature. A．of
B．for
C．by
D．about

参考答案：

答案解析：

His efforts to raise money for his program were（）because no

His efforts to raise money for his program were（）because no one showed any inte

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听第三段独白，回答第7－9题Who is the speaker?A．A college student in Chin B．A Chinese student

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China has got a good for fighting against the flu with its careful and smooth or

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