请教几道04年10月的语法题

aon740505

31. statistics 是统计学  indicate --->indicates

alicechen

31 indicate should be indicates.

kate198501

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？

BCD都是绝对不对的用法.

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.

B是对的用法,C嘛要加S

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

REMAINS 的意思是残余,遗迹.C也许应改为ARE CONCERNED

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。

应该是