2. 职称考试
  3. This gold mine was discovered by accident.A:by air B:by chance C:at large D:at

This gold mine was discovered by accident.A:by air B:by chance C:at large D:at

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问题 This gold mine was discovered by accident.
选项 A:by air       
B:by chance
C:at large       
D:at ease
答案B
解析本题考查的是对近义短语的辫析。本句话的意思是“这个金矿是被偶然发现的”。四个选项中，A选项by air的意思是“乘飞机，通过航空的方式“，一般用于描述交通方式。C选项at large的意思是“未被捕，普遍”，如：The tiger is still at large．老虎还没有被捉到。D选项at ease的意思是“自由自在，放松”，如：She felt completely at ease with Tom．她和汤姆在一起时感到十分放松。B选项by chance的意思与by accident一样，表示“偶然，意外”，因此B选项符合题意。
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