Whoever invented______ wheel is believed to have made______ most useful invention in______ history. ...
2023-01-03 18:03:50 114次 陕西省2010届高考下学期第一次模拟考试试卷（英语） 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
Whoever invented______ wheel is believed to
have made______ most useful invention in______ history.
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A．a; the /;
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B．the; the; /
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C．the;. /; /
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D．a; a; the.
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