摘要：从A.B.C.D四个选项中.选出可以填入空白处的最佳选项. 11. The main reason for the population growth isn’t so much as a rise in birth rates a fall in death rates as result of improvement in medical care. A. than B. as C. more than D. or 答案:B 解析:本题考查比较结构用于抽象意义的用法.该句要表达“人口增长主要是由于医学进步而使得死亡率下降这个因素.而不是因为出生率上升了 .
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从A、B、C、D四个选项中，选出可以填入空白处的最佳选项。Some pre-school children go to a day care center, __________ they learn simple games and songs.
- A.then
- B.there
- C.while
- D.where
从A、B、C、D四个选项中，选出可以填入空白处的最佳选项。
The manager suggested an earlier date ____________ the meeting.
- A.on
- B.for
- C.about
- D.with
从A、B、C、D四个选项中，选出可以填入空白处的最佳选项。
I won't call you, ________ something unexpected happens.
- A.unless
- B.whether
- C.because
- D.while