GRE阅读练习每日一篇(五十一)_GRE阅读

　　They are exclusively carnivorous.

　　They have more than one method of obtaining food.

　　They can tolerate frigid water.

　　They can disguise themselves by secreting mucus.

　　They are more sensitive to light than are other zooplankton.

　　18. The author is primarily concerned with

　　explaining how appendicularians obtain food

　　examining the flotation methods of appendicularians

　　mapping the distribution of appendicularians around the world

　　describing how appendicularians differ from other zooplankton

　　comparing the various types of balloons formed by appendicularians

　　19. According to the passage, all of the following are descriptive of appendicularians EXCEPT:

　　tailed

　　vegetarian

　　small-sized

　　single-celled

　　ocean-dwelling

　　20. The passage suggests that appendicularians tend to remain in surface waters because they

　　prefer the warmer water near the surface

　　are unable to secrete mucus at the lower levels of the ocean

　　use the contrast of light and shadow at the surface to hide from predators

　　live in balloons that cannot withstand he water pressure deeper in the ocean

【GRE阅读练习每日一篇(五十一)】相关文章：

123 4 5 6 7 显示全文

上一篇：GRE阅读练习每日一篇(四十三) 下一篇：GRE阅读练习每日一篇(四十七)

GRE阅读 最新: GRE阅读陌生词汇的技巧
2016-03-01; GRE阅读题选项的原则
2016-03-01; 新GRE阅读经典句式盘点
2016-03-01; GRE阅读翻译练习
2016-03-01; GRE阅读主旨题解题技巧
2016-03-01; GRE阅读高分技巧
2016-03-01

网友关注: 四级99分得主的经验谈多做练习是关键; 一周做一两套题，足够了; 四级考试失败的原因; 四级高分能手传授“秘诀”; 45天搞掂英语四级; 英语四级考试经验总结：要考就过650; 英语学习适合自己的就是最好的(上); “清华馒头神”畅谈英语学习传奇历程; 学习英语十一条军规; 四级作文心得