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A．No. I got it yesterday.B．I wrote it yesterday.C．Yes. I got it yesterday.D．I mailed it

A. No. I got it yesterday.
B. I wrote it yesterday.
C. Yes. I got it yesterday.
D. I mailed it yesterday.

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A. Yes, she is.
B. Yes, she will.
C. No, she doesn't.
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64个直径都a/4为的球，记它们的体积之和为V甲，表面积之和为A甲；一个直径为a的球，记其体积为V乙，表面积为A乙，则()。

A. V甲＞V乙且A甲＞A乙
B. V甲＜V乙且A甲＜A乙
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D. V甲＝V乙且A甲＜A乙
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中华人民共和国单独关税区是指台湾、香港、澳门地区，不包括我国的其他经济特区及沿海开放城市。()

A. 正确
B. 错误

【32】

A. before
B. after
C. when
D. unless