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第1题

电动转辙机每转换一次，锁闭齿轮和锁闭齿条块完成了___、___和___三个过程。
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第2题

Lord Jim_____a private school five years ago with the money he earned through hard work. A、 finds B、 found C、 founds
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第3题

I often have conversations with John over telephone, while keep in touch with Tom by__________ letter. A、 不填;the B、 不填
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第4题

Even ______ Paul’s brother lives in Brazil, he has never been there. A、 although B、 despite C、 though D、 that
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