2009-1986考研英语真题及答案.pdf

快乐英语 请先阅读“编者的话” 编者的话： 欢迎您使用快乐英语为您精心整理的考研真题及答案，本文件包括 2009-1986 的研英真 题及答案。（每篇真题后面跟随相应的答案），本文件由快乐英语出版。 如在使用中遇到问题，发现本文件中的错误，或者有什么建议。 可以直接联系我们：qq: 121666888 或者去资料下载处跟帖留言。 我们会及时回复您。 其他： 喜欢英语的朋友可以加入我们的群： 快乐英语群 1： 9638692 快乐英语群 2 ： 快乐英语群 3 ： 祝您在研究生英语考试中取得优异的成绩！ 快乐英语 2009 年 2 月25 日 2009 年全国硕士研究生入学统一考试英语试题 Section I Use of English Directions: Read the following text. Choose the best word(s) for each numbered blank and mark A, B, C or D on ANSWER SHEET 1. (10 points) Research on animal intelligence always makes me wonder just how smart humans are. 1 the fruit-fly experiments described in Carl Zimmer’s piece in the Science Times on Tuesday. Fruit flies who were taught to be smarter than the average fruit fly 2 to live shorter lives. This suggests that 3 bulbs burn longer, that there is an 4 in not being too terrifically bright. Intelligence, it 5 out, is a high-priced option. It takes more upkeep, burns more fuel and is slow 6 the starting line because it depends on learning — a gradual 7 — instead of instinct. Plenty of other species are able to learn, and one of the things they’ve apparently learned is when to 8 . Is there an adaptive value to 9 intelligence? That’s the question behind this new research. I like it. Instead of casting a wistful glance 10 at all the species we’ve left in the dust I.Q.-wise, it implicitly asks what the real 11 of our own intelligence might be. This is 12 the mind of every animal I’ve ever met. Research on animal intelligence also makes me wonder what experiments animals would 13 on Editer:Z.Nok