______ the Internet is of great help, I don’t think it’s a good idea to spend to

题干

______ the Internet is of great help, I don’t think it’s a good idea to spend too much time on it.

A．If

B．While

C．Because

D．As

上一题下一题 0.85难度单项选择更新时间:2011-10-25 03:06:08

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