贵阳市2014高考英语（新人教版）一轮阅读训练（27）附答案课时作业(二十七)选修6Unit 2 Poems(限时：35分钟)=.阅读理解ASome students get so nervous before a test. They do poorly even if they know the material. Sian Beilock, a psychology professor at the University of Chicago in Illinois, has studied these highly anxious testtakers.Sian Beilock says, “They start worrying about the consequences. They might even start worrying about whether this exam is going to prevent them from getting into the college they want. And when they worry, it actually uses up attention and memory resources. I talk about them as their cognitive(认知的)horsepower that they could otherwise be using to focus on the exam.”Professor Beilock and another researcher, Gerardo Ramirez, have developed a possible solution. Just before an exam, highly anxious testtakers spend ten minutes writing about their worries about the test. The researchers tested the idea on a group of 20 anxious college students. They gave them two short math tests. After the first one, they asked the students to either sit quietly or write about their feelings about the upcoming second test. The researchers added to the pressure. They told the students that those who did well on the second test would get money. They also told them that their performance would affect other students as part of a team effort.Professor Beilock says those who sat quietly scored an average of 12 percent worse on the second test. But the students who had written about their fears improved their performance by an average of five percent.Next, the researchers used younger students in a biology class. They told them before final exams either to write about their feelings or to think about things unrelated to the test.Professor Beilock says highly anxious students who did the writing got an average grade of B， compared to a Bfor those who did not.The research shows that for students who are highly testanxious, whod done the writing intervention(排解), all of a sudden there was no relationship between test anxiety and performance. Those students most likely to worry were performing just as well as their classmates who dont normally get nervous in these testing situations.But what if students do not have a chance to write about their fears immediately before an exam or presentation? Professor Beilock says students can try it themselves at home or in the library and still improve their performance.16The purpose of the passage is _A. to build the confidence of the highly anxious testtakersB. to introduce a research about the anxious testtakersC. to improve the performance of the testtakersD. to tell something about the highly anxious testtakers17The underlined word “them” in Paragraph 2 refers to _A. attention and memory resourcesB. worries about the consequencesC. concerns about the examD. cognitive horsepower18According to the research, the solution to the test anxiety is to_A. sit quietly before the examB. prepare well before the testC. set their mind on happy memoriesD. write about their feelings before the test19The result of the research suggests that _A. proper amount of burden may turn out to be a good thingB. avoiding facing the problem may contribute to relaxationC. facing the fears bravely may help one to achieve moreD. taking no action before difficulty may result in successBSeen from space the Earth is covered in a blue mantle. It is a planet on which the continents are dwarfed(相形见绌)by the oceans surrounding them and the vastness of the marine area.An astonishing 80 percent of all the life on Earth is to be found hidden beneath the waves and this vast global ocean pulses around our world driving the natural forces which keep life on our planet.The oceans provide necessary sources of protein, energy, minerals and other products of use the world over and the rolling of the sea across the planet creates over half our oxygen, drives weather systems and natural flows of energy and nutrients around the world, transports water masses many times greater than all the rivers on land combined and keeps the Earth habitable.Without the global ocean there would be no life on Earth.It is seriously worrying, then, that we are damaging the oceans on a scale that is unimaginable to most people.We now know that human activity can have serious influences on the vital forces governing our planet. We have fundamentally changed our global climate and are just beginning to understand the consequences of that. As yet largely unseen，but just as serious，are the influences we are having on the oceans. A healthy ocean has diverse ecosystems and strong and healthy habitats. The actual state of our oceans is a far cry from this natural level.A large quantity of human pressures are being exerted both directly and indirectly on ocean ecosystems the world over. Consequently ecosystems are collapsing as marine species are driven towards extinctio