单选题：（　）- __________ will he stay in this city? --At least a mont

题目内容：

（　）- __________ will he stay in this city?
--At least a month. A．How long
B．How many
C．How often
D．How much

参考答案：

答案解析：

（　）Copernicus developed his theory __________.

（　）Copernicus developed his theory __________. A．using various telescopes B．base

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第28答案是（　）A．worse B．better C．fewer D．no

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（　） Why did the young man want to buy a present for the girl? A．He wanted to giv

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（　）According to Professor Colin,which of the following is TRUE? A．Reducing radio

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