青年人网24小时滚动更新
24小时滚动更新(GRE阅读)                       发布时间

  Sportfishers introduced the Zander, a type of perch, to Britain’s rivers and canals in the 1970s. Because zander eat large numbers of smaller fish, they have had a devastating effect on native fish populations. To protect the native fish, a government program removed a significant proportion of the zander from Britain’s waterways last year. Surprisingly, this year the loss of native fish to zander has been greater than before.

  4. Which of the following, if true, would most help to explain the greater effect of zander on the native fish population?

  A. The climate in Britain is very similar to the climate in regions to which zander are native.

  B. Most of the zander removed were fully grown, and fully grown zander eat large numbers of smaller zander.

  C. Every year a large number of zander are caught by sportfisher in Britain’s waterway.

  D. Previous government program designed to remove nonnative species from Britain’s waterways have failed.

  E. Zander are just one of several nonnative fish that prey on the other fish found in Britain’s waterway.

  答案:B

GRE考试相关推荐:

            2016年GRE考试写作专题解析及作文提纲汇总

            2016年GRE考试两周冲刺复习四点必备技巧

资讯索引栏目导航
关于我们营销中心广告联系联系我们网站地图法律声明友情链接最新更新医药更新
Copyright © 2005- 青年人网 (Qnr.Cn) All Rights Reserved 陕ICP备11003766号  
共青团陕西省委、河南省委及陕西人才中心权威支持(西安) 电 话:400-029-8884 传 真:029-85642660
百度大联盟黄金认证  十佳网络教育机构