|
- 精华
- 0
- 积分
- 952
- 经验
- 952 点
- 威望
- 40 点
- 金钱
- 1002 ￥
- 魅力
- 518
|
这题是OG12的第41题
OG的解释
this sentence explains a hypothetical situation and therefore calls for a conditional-or contrary-to-fact-construction, because in order to more accurately predict population, demographers would have to know more than they presently know.A present-tense verb is required to describe the current state of demograhpers' knowledge, and the comparison made by the sentence must be between current and conditional knowledge, not between knowledge and time of knowing(now).
A.wrong comparison-between knowledge and time(now);conditional verb is needed
D.conditional knowledge, indicated by would have to know, is correctly compared to current knowledge.
|
|
