问答题
经过多次失败之后,他终于成功地发明了一种比已有的任何一种都好的设备。
【参考答案】
Having failed many times, he finally succeeded in inventing ......
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The expression state of the an became as common and popular as computers themselves. ( Passage 3 )
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单项选择题
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A.courage
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C.interest
D.sense
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