Less than 35 years after the release of African honeybees outside Sao Paulo, Brazil, their
descendants, popularly known as killer bees, had migrated as far north as southern Texas.
(A) Less than 35 years after the release of African honeybees outside Sao Paulo, Brazil,
(B) In less than 35 years since releasing African honeybees outside Sao Paulo, Brazil,
(C) In less than the 35 years since African honeybees had been released outside Sao Paulo, Brazil,
(D) It took less than 35 years from the release of African honeybees outside Sao Paulo, Brazil, when
(E) It took less than the 35 years after the time that African honeybees were released outside
Sao Paulo, Brazil, and then
别的选项都知道了，可答案怎么可以是A？their无指代啊。。。因为在of的后面
同理，比如，
OG12- 43 Laos has a land area about the same as Great Britain but only four million in population, where many are
(C) that is about the same size as Great Britain’s land area, but in Laos with a population of only four million people, many of them
指代不清
og-12-23 In a previous design, the weight of the discus used in Track competition is concentrated in a metal center,but now it is lined with lead around the perimeter
指代不清
-- by 会员 fannybeibei (2010/8/20 21:35:29)
首先谢谢dzz，在我这么紧张的时候两次都回答我的问题～～～
OG 12 43的解释说them has no clear referent,所以我才以为不能指代的。
还望继续指教！
-- by 会员 fannybeibei (2010/8/20 22:01:58)
