单选题：听音频，{MP3:http://wximg.233.com/attached/media/20151110/201511

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  • 题目类型：单选题
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题目内容：
听音频，{MP3:http://wximg.233.com/attached/media/20151110/20151110173141_2396.mp3}
回答题：
A．American blog using.
B．American Internet visits.
C．American material life.
D．American communication styles.

参考答案：
答案解析：

New research proposes that single-sex math and science class

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Questions 12 to 15 are based on the conversation you have ju

Questions 12 to 15 are based on the conversation you have just heard.A．Social s

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Questions 9 to 12 are based on the conversation you have jus

Questions 9 to 12 are based on the conversation you have just heard.A．It preven

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