28-39: After increasing steadily for centuries, the total annual catch of all wild fish peaked in 1989; since that time, the total catch for most species has declined or plateaued, prompting conservation efforts designed to help prevent population crashes and possible extinctions.
A: fish peaked in 1989; since that time, the total catch for most species has declined or plateaued, prompting
B: fish peaked in 1989, but with the total catch since then declining or plateauing in the case of most species, prompting
C: fish had peaked in 1989; since that time, the decline or plateau of the total catch for most species, which prompted
D: fish, which peaked in 1989, and, in the case of most species, it has declined or plateaued since, prompted
E: fish, which peaked in 1989 but has since declined or plateaued for most species, and this prompted作者: youyiyoutian 时间: 2012-5-18 20:51
答案A，句子想表达：since that time, the total catch for most species has declined or plateaued，即看来渔业资源快枯竭了，从而 促使了conservation efforts
