(E) Conservation efforts aimed at preserving a few well-chosen species are more cost-effective than are broader-based efforts to improve the environment.
参考答案:CADA ACB
【2013年GMAT考试阅读模拟试题及答案20】相关文章:
最新
2016-03-04
2016-03-04
2016-03-04
2016-03-04
2016-03-04
2016-03-04