请教几道04年10月的语法题

15. A challenging new area in inorganic chemistry is ---- the role of transition metals in the biochemical catalysts called enzymes.
     (A) that of understanding
     (B) to have understanding
     (C) the understanding
     (D) understanding that

答案选A，这是个什么结构啊？其它选项为什么不对呢？

19. Art Deed, a style of design popular in the 1920's and 1930's, was used primarily in furniture, jewel, textiles, and interior decoration.

答案选C，可我觉得C是正确的呀。我选的是B，把design popular 改为 popular design.

28. Paleoanthropologists examine fossil remains of extinct primates, while physical anthropologists concern with ethology study the behavior of primates in their natural settings.

答案选B，我选的是A，把remains改为remaining

31. Statistics indicate that approximate every 22 years--within a range of 3 to 4 years--a major drought occurs in the United States.

答案选A，我选的是B，把approximate改为approximately

37.Among the most complex cryslals are that of silicon dioxide, which has seven different structures at varjous temperatures and pressures, the most common being quartz.

答案选B，我选的是D，把common being改为common。是不是应该把that 改为those。

请各位高手帮忙解答一下，谢谢！

15. A challenging new area in inorganic chemistry is ---- the role of transition metals in the biochemical catalysts called enzymes.
     (A) that of understanding 系表结构。
     (B) to have understanding have the understanding of / have understood
     (C) the understanding the understanding of
     (D) understanding that

答案选A，这是个什么结构啊？其它选项为什么不对呢？

谢谢BRACE

其它几道呢？

19. Art Deed, a style of design popular in the 1920's and 1930's, was used primarily in furniture, jewel, textiles, and interior decoration.

答案选C，可我觉得C是正确的呀。我选的是B，把design popular 改为 popular design.

jewel是指具体的珠宝，jewelry是宝石的总称，这里用jewelry更准备些，如果用jewel要加复数

28. Paleoanthropologists examine fossil remains of extinct primates, while physical anthropologists concern with ethology study the behavior of primates in their natural settings.

答案选B，我选的是A，把remains改为remaining

从句中，已经有study做谓语，concern与study中间没有连词，应该改成concerned做后置定语

31. Statistics indicate that approximate every 22 years--within a range of 3 to 4 years--a major drought occurs in the United States.

答案选A，我选的是B，把approximate改为approximately

这个我也搞不懂，我选的与你的一样

37.Among the most complex cryslals are that of silicon dioxide, which has seven different structures at varjous temperatures and pressures, the most common being quartz.

答案选B，我选的是D，把common being改为common。是不是应该把that 改为those。

请各位高手帮忙解答一下，谢谢！

这个句子是倒装，谓语是are，主语要求是复数，that改成those

顺便问一下，哪儿有完整的2004年10月的题可以下载吗？我只找到了2004年1月的题，而且还没有参考答案。马上就要考了，非常希望找到2004年的几套新题。多谢！！！！

B没有错。 C错。 C要用JEWELRY.

28. Paleoanthropologists examine fossil remains of extinct primates, while physical anthropologists concern with ethology study the behavior of primates in their natural settings.

答案选B，我选的是A，把remains改为remaining

从句中，已经有study做谓语，concern与study中间没有连词，应该改成concerned做后置定语RE

REMAINS是残骸的意思，没错。

CONCERN的用法不对。

31. Statistics indicate that approximate every 22 years--within a range of 3 to 4 years--a major drought occurs in the United States.

答案选A，我选的是B，把approximate改为approximately

这个我也搞不懂，我选的与你的一样

这个从前考过的。可以用APPROXIMATELY在语法大全里面查一下。肯定有同样的题目。

37.Among the most complex cryslals are that of silicon dioxide, which has seven different structures at varjous temperatures and pressures, the most common being quartz.

答案选B，我选的是D，把common being改为common。是不是应该把that 改为those。

请各位高手帮忙解答一下，谢谢！

这个句子是倒装，谓语是are，主语要求是复数，that改成those

这个我觉得D不对。 我觉得B没问题。