题目内容

She has brought()two children by herself.
A: 不填
B: up
C: on
D: away

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– The lecture given by professor Smith was really interesting. – ().
A: I couldn't agree with you more
B: I'm going to listen to it
C: It sounds reasonable
D: It didn't last too long

正常2周岁的小儿，身高为

A. 81cm
B. 83cm
C. 85cm
D. 87cm
E. 84cm

The problem is()by pollution.
A: caused
B: because
C: due
D: because of

蓄电池夏季放电超过（）时，应及时将蓄电池从车上拆下进行补充充电。

A. 15℅
B. 25℅
C. 50℅
D. 75℅