Diamond, _________, is the hardest of all materials.A．like we know B．since we kn_刷题宝

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Diamond, _________, is the hardest of all materials.

A．like we know

B．since we know

C．we know

D．as we know

上一题下一题 0.64难度单项选择更新时间:2017-02-07 04:16:27

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