选择题：[交际用语]- How are you going on with your English?- _________A I am very well. B

题目内容：

[交际用语]- How are you going on with your English? - _________

A I am very well. B I am going to the library C I am going to take College English Test Band Four D That's a good question

参考答案：
答案解析：

以下属于密度梯度离心法的有（）。A．差速离心法B．沉降速率法C．速率区带离心法D．等密度区带离心法E．分析离心法

以下属于密度梯度离心法的有（）。A．差速离心法B．沉降速率法C．速率区带离心法D．等密度区带离心法E．分析离心法

分类： 大学英语B级  题型：选择题
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[交际用语]- How many languages does Peter speak? - _________A Many languages. B Pr

[交际用语]- How many languages does Peter speak? - _________A Many languages. B Pr

分类： 大学英语B级  题型：选择题
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[交际用语]- Is that seat taken? - _________

[交际用语]- Is that seat taken? - _________

分类： 大学英语B级  题型：选择题
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[交际用语]- What does Peter do?- _________

[交际用语]- What does Peter do?- _________

分类： 大学英语B级  题型：选择题
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[交际用语]- What's the date today?- _________

[交际用语]- What's the date today?- _________

分类： 大学英语B级  题型：选择题
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