非限定中使用比较的形式

MMMM25

Africa's black rhino populationin the mid-1970's numbered about 20,000, ten times the estimated population of2,000 in 1997.

A the estimated population  

B that of their estimatedpopulation  

C more than the population'sestimated amount  

D more black rhinos than theirpopulation estimate  

E more than that of theirpopulation's estimated amount

答案：A

The European Economic Communityexported just under $400 billion in goods in 1988, sixty percent more than theUnited States did and nearly twice as much as Japan's exports.

A the United States did andnearly twice as much as Japan's exports  

B the United States' and nearlydouble what the Japanese exports were  

C the United States exported and nearly twice as much as the Japanese did

D what the United States did andnearly twice as much as Japan's exports  

E what the United States exportedand nearly double the Japanese exports  

答案：C

大家好

这是两个在非限定中使用比较的形式。但是，我不知道什么时候能确定只是做主语比较，什么时候是“subject+verb”的比较。换句话说，为什么第二句句子里面的D是错的呢。

（不要说wordy好吗？这个在考试中真的掌握不了）