大全10-11

fei123

Less than 50 percent of a certain tropical country's

wildlands remains intact. Efforts are under way to

restore biological diversity in that country by restor-

ing some destroyed wild habitats and extending

some relatively intact portions of forests. However,

opponents argue that these efforts are not needed

because there is still plenty of wildland left.

Which of the following, if true, most significantly

weakens the argument of the opponents of

conservation efforts?

(A) As much, if not more, effort is required to

restore a wild habitat as to preserve an intact

habitat.

(B) The opponents of restoration efforts are, for the

most part, members of the wealthier classes

in their own villages and cities.

(C) Existing conservation laws have been very effec-

tive in preserving biological diversity within

the wildlands that remain intact.

(D) For many tropical species native to that coun-

try, the tropical wildlands that are still rela-

tively intact do not provide appropriate

habitats for reproduction.

(E) If a suitable population of plants and animals is

introduced and is permitted to disperse and

grow, tropical habitats can most certainly be

restored.

答案是C,我选D。C是法律上的约束，可以成立。但D是一种实际情况的陈述，也应该可以吧。