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【判断题】
推进至靠近竖井井壁封门不小于 50cm处,停止推进,拆除封门。 ( )A.
正确
B.
错误
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【单选题】No one had told Smith about ______ a lecture the following day.
A.
there be
B.
there would be
C.
there being
D.
there was
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