Internet is very useful. It can our eyes to the outside.A. put up B. grow up C. turn up D.

问题补充：

Internet is very useful. It can our eyes to the outside.

A. put up

B. grow up

C. turn up

D. open up

答案：

A. put up

B. grow up

C. turn up

(答案→)D. open up

解析：考查短语辨析。put up“搭建，张贴”； grow up“长大”；turn up“出现，调高”；open up“打开”。句意“因特网非常有用，他能扩大我们的眼界。”故选D。

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