At present, we are studying a total of nine subjects, ________ I think is physic

题干

At present, we are studying a total of nine subjects, ________ I think is physics.

A．of them the most difficult	B．and the most difficult of which
C．the most difficult of them	D．the most difficult of which

上一题下一题 0.64难度单项选择更新时间:2013-12-17 08:21:47

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