题目内容

In the U.S., men spend more time on social media than women.

A. T
B. F
C. NG

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Twitter is the third most popular social media site.

A. T
B. F
C. NG

Over 500 million people worldwide use Qzone.

A. T
B. F
C. NG

下列属于脑颅的是（）

A. 颧骨
B. 上颌骨
C. 筛骨
D. 腭骨

成人骨的重量约占体重的（）％

A. 5
B. 20
C. 35
D. 50