2017年专四英语完形填空专项复习
Climate, more than any other single factor, 11 the distribution of life on Earth. Climatic boundaries establish the limits within which organisms can survive. Plants, even more than animals, must be 12 adapted to climate in order to survive. They cannot move about or take shelter but must be equipped to 13 whatever weather conditions are likely to occur. In the harsh conditions of the far north of the earth, for example, low growing mosses, lichens, and a few flowering plants all hold to the ground for shelter from icy winds.
Animals, despite their 14 to move about and find shelter, are just as much influenced by climate as plants are. Creatures such as the camel and the penguin are so highly specialized that they have an 15 limited distribution. Others, such as bears, are flexible enough to adapt to a 16 range of climates.. Ocean-dwelling organisms are just as sensitive to climatic changes—in this case temperature and salinity—as land animals. Reef corals can survive only in clear warm seawater. Certain foraminaters are so sensitive to changes in their 17 that their presence can be taken as an 18 of sea temperature. Human beings are among the 19 specialized of all animals and can live almost anywhere. Their clothes and their homes 20 as a sort of "miniature climate" that can be taken with them everywhere.
A. ntly
E. x
I.
M. ronment
参考答案
II. B 12. L 13. I 14. C 15. J 16. E 17. O 18. H 19. A 20. C
part 2Scientists at Sussex University appear to be on the way to 11 how the mosquito, carrier of diseases such as malaria and yellow fever, homes in on its target. The problem is that they have found that the best way to avoid being bitten is: stop breathing, stop sweating, and keep down the temperature of your immediate surroundings. 12 the first suggestion is impossible and the others very difficult.
Scientists have found that there are three 13 stages in a mosquito's assault. Stage one is at fifty feet away, when the insect first smells a man or a animal to 14 . Stage two is thought to come into operation about twenty-five feet from the target, when the insect becomes guided by the carbon dioxide breathed out by the intended victim. Stage three is when the mosquito is only a matter of inches from its 15 the warmth and moisture given off by the victim is the final clue.
The researchers then * 16 how repellents interfere with its three-stage attack. They found repellents act more subtly than by just giving off a nasty smell. A Canadian researcher says that repellents appear to 17 mosquitoes first when it is following the carbon dioxide and second during the final approach, where the warmth and moisture are the insect's 18 .
Air pervaded by one of the many chemical repellents stops the mosquito reacting to the victim's carbon dioxide, and the repellent seems to affect the tiny hairs with which the insect senses moisture in the air. The sensors are blocked so that the 19 does not know whether it is flying through a moist current, or
the sensors are made to send the 20 signals.
A. examined al g ct
E. bite rtunately nting inct
I. prey e ked nite
M. Unnecessarily use overing
参考答案
11. O 12. F 13. H 14. E 15. I 16. A 17. N 18. J 19. D 20. C
相關文章
-
2017年专四完形填空专项复习试题
三人行,必有我师焉。择其善者而从之,其不善者而改之。以下是小编为大家搜索整理的2017年专四完形填空专项复习试题,希望能给大家带来帮助!更多精彩内容请及时关注我们应届毕业生考试网! task 1I have never attended -
2017年英语专四完形填空复习题
学习的路上不可能一帆风顺,当你遇到挫折的时候,不要灰心丧气.只要你是一个有心人,去努力,那么,你就会克服一件件难事.以下是小编为大家搜索整理的2017年英语专四完形填空复习题,希望能给大家带来帮助!更多精彩内容请及 -
专四英语考试完形填空专项复习题
无论做什么事,只要有恒心,一定成功.以下是小编为大家搜索整理的专四英语考试完形填空专项复习题,希望能给大家带来帮助!更多精彩内容请及时关注我们应届毕业生考试网! Directions: In this section, there is a pas -
2017年英语专四考试完形填空复习题
日子在弹指一挥间就毫无声息的流逝,我们的工作又进入新的阶段,为了今后更好的工作发展,写一份计划,为接下来的工作做准备吧!相信大家又在为写计划犯愁了吧?以下是小编整理的四年级教学工作计划5篇,欢迎阅读与收藏。四年级教 -
2017年专四英语考试复习题完形填空练习
约束不了自己是自己无能的一种表现。自己都管不住自己,难免要滑入深渊。以下是小编为大家搜索整理2017年专四英语考试复习题完形填空练习,希望对正在关注的您有所帮助!更多精彩内容请及时关注我们应届毕业生考试网! -
2017英语四级完形填空专项练习
引导语:提高英语阅读水平要靠平时的积累,以下是本站小编为大家整理的2017英语四级完形填空专项练习及分析,欢迎阅读! 练习一In a telephone survey of more than 2,000 adults,21% said they believed the sun revolved ( -
2017年专业英语四级考试完形填空复习题
学习中的大忌是囫囵吞枣;读书中的' 是走马观花。以下是小编为大家搜索整理2017年专业英语四级考试完形填空复习题,希望对正在关注的您有所帮助!更多精彩内容请及时关注我们应届毕业生考试网! part 1Like most pare -
2017专四英语完形填空考前复习题
XX国小六年级班主任下学期工作计划(一)在这万物复苏,欣欣向荣的美好季节,我们重新起航迎来了新学期。经过与学生们两学年的接触,对班级的同学也有了深入的了解,让我对工作有一个较清晰的思路,我希望在新的学期里能搞好班级 -
最新英语专业四级考试完形填空专项复习题
学习不要害怕吃苦,只要努力,就一定能冲到终点. 以下是小编为大家搜索整理的最新英语专业四级考试完形填空专项复习题,希望能给大家带来帮助!更多精彩内容请及时关注我们应届毕业生考试网! part 1I have never atten -
17年专四英语完形填空专项试题训练
每个人的智商都一样,那么造成天才与笨蛋的差别就在与勤奋。即使你天资没那么好,但每个人最开始的.智相同,你不要怨天尤人。因为你再怎么抱怨,那也是枉然,不如勤奋起来,因为勤能补拙,历史上的曾国潘的记忆好,但最后他却成了一