题目内容

cut down

A. 剪短
B. 砍掉，减少

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it happened that

A. 似乎
B. 碰巧

I hear there is Sandstorm in Beijing.

A. That is terrible.
B. I don'tknow.

loudspeaker

A. 大声说
B. 扩音器

超低出生体重儿的出生体重低于

A. 800g
B. 1000g
C. 1500g
D. 2000g
E. 2500g