请教一道GWD争议题

huangmaowade

A March 2000 Census Bureau survey showed that Mexicoaccounted for more than a quarter of all foreign-born residents of

the UnitedStates, the largest share for any country to contribute since 1890, whenabout 30 percent of the country’s foreign-born population was from Germany.

A.    the largest share for any country to contribute

B.    the largest share that any country has contributed

C.    which makes it the largest share for any country to contribute

D.    having the largest share to be contributed by any country

E.     having the largest share to have been contributed by any country

答案是B，A貌似也对吧~~~~~~~~

BEARhx

个人觉得since是完成时的标志

-- by 会员 arish (2011/5/10 7:01:44)

严重赞成ls！我做的版本貌似没说是争议题，直接给的B is the best

arish

个人觉得since是完成时的标志