試題詳解

32.We can infer from Dr. Myers and Dr. Worm’s paper that ________.
(A) the stock of large predators in some old fisheries has reduced by 90%
(B) there are only half as many fisheries as there were 15 years ago
(C) the catch sizes in new fisheries are only 20% of the original amount
(D) the number of larger predators dropped faster in new fisheries than in the old