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> While building a tunnel through the mountain, ______ .A.an underground lake was discoveredB.there wa
While building a tunnel through the mountain, ______ .A.an underground lake was discoveredB.there wa
题目简介
While building a tunnel through the mountain, ______ .A.an underground lake was discoveredB.there wa
题目详情
While building a tunnel through the mountain, ______ .
A.an underground lake was discovered
B.there was an underground lake discovered
C.the workers discovered an underground lake
D.a lake was discovered underground
题型:单选题
难度:偏易
来源:不详
答案
C
略
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题目简介
While building a tunnel through the mountain, ______ .A.an underground lake was discoveredB.there wa
题目详情
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