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以下两道是GWD题，考点相近，后面是CD上的解释 To develop more accurate population forecasts, demographers have to know a great deal more than now about the social and economic determinants of fertility.
- have to know a great deal more than now about the social and economic
- have to know a great deal more than they do now about the social and economical
- would have to know a great deal more than they do now about the social and economical
- would have to know a great deal more than they do now about the social and economic
- would have to know a great deal more than now about the social and economical [D]*E
参考答案E,reedsong答案D.CD讨论均倾向于D,我选D they have to know,若不补出，是和have to还是和know平行不清；若改为would have to, than they do明确表示平行的是know, 若是和have to 平行的话应补出would
After more than four decades of research and development, a new type of jet engine is being tested that could eventually propel aircraft anywhere in the world within two hours or help boost cargoes into space at significantly lower costs than current methods permit.
A. tested that could eventually propel aircraft anywhere in the world within two hours or help B. tested that could eventually have the capability of propelling aircraft anywhere in the world within two hours or to help C. tested, eventually able to propel aircraft anywhere in the world within two hours, or helping D. tested, and it eventually could propel aircraft anywhere in the world within two hours or helping E. tested, and it could eventually
have the capability to propel aircraft anywhere in the world within two hours or help could，have the capability罗嗦；help与谁平行 could是主干，不能再和别的动词平行could do to do or do歧义
类似GWD-1-Q32
Answer: A 第一题正解抽象后是would do to do than do，注解是补出do就明确表明不是和would平行。 第2题e选项分析是could do to do or do，后面的这个do指代不清。 我的疑惑是：如果第2题的解释是正确的，那么第1题比较级后的do不也指代不清吗，也是无法确定是would后面的do还是不定式根的do 想了一整天，大家给点意见！ thx! | 
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发表于 2006-7-13 12:03:00
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