题目内容

Wood does not conduct electricity, ______

A. nor rubber does
B. nor does rubber
C. also doesn’t rubber
D. so doesn’t rubber

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She could only see the ______ of the trees.

A. outline
B. general
C. edge
D. outlook

在低经营杠杆行业中的企业,生产量越高,获得的利润越高。( )

A. 对
B. 错

必要资本量、专利权和版权都是长期性的进入壁垒。( )

A. 对
B. 错

Shortly after the accident, two ______ policemen came to the spot.

A. dozen of
B. dozens
C. dozen
D. dozens of

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