新PREP186

Laos has a land area about the same as Great Britain but only 4 million in population, where many are members of hill tribes ensconced in the virtually inaccessible mountain valleys of the north.

A. about the same as Great Britain but only 4 million in population, where many

B. of about the same size as Great Britain is, but in Laos there is a population of only 4 million, and many

C. that is about the same size as Great Britain's land area, but in Laos with a population of only 4 million people, many of them

D. comparable to the size of Great Britain, but only 4 million in population, and many

E. comparable to that of Great Britain but a population of only 4 million people, many of whom

请教各位？能否分析下每个选项~~多谢！

这个方法好像有待商榷吧，看这个题:

The number of people flying first class on domestic flights rose sharply in 1990, doubling the increase of the previous year. 

A. doubling the increase of

B. doubling that of the increase in

C. double as much as the increase of

D. twice as many as the increase in

E. twice as many as the increase of

这个题目的答案是A 不是B 啊！