A.Insects chewing on its leaves.B.Bees laying eggs on its leaves.C.Pesti
A.Insects chewing on its leaves.
B.Bees laying eggs on its leaves.
C.Pesticides sprayed on its leaves.
D.Knives cutting its stalk.
A.Insects chewing on its leaves.
B.Bees laying eggs on its leaves.
C.Pesticides sprayed on its leaves.
D.Knives cutting its stalk.
B.She has already seen the exhibit.
C.She will give the man a new map.
D.She doesn’t know the way to the building.
A.Asking students to find and solve problems on their own.
B.Developing students ability to apply what they learn.
C.Giving students detailed guidance and instruction.
D.Allowing students a free hand in problem solving.
B.Studying the life rules of plants and insects.
C.Reducing or even eliminating the need for chemical pesticide.
D.Developing cultural controls in managing pest populations.
根据下面材料,回答下列各题。 University of York biologist Peter Mayhew recently found that global warming might actually increase the number of species on the planet,contrary to a previous report that higher temperatures meant fewer life forms—a report mat was his own. In Mayhew’s initial 2008 study,low biodiversity among marine invertebrates(无脊椎动物)appeared to coincide with warmer temperatures on Earth over the last 520 million years. But Mayhew and his colleagues decided to reexamine their hypothesis,this time using data that were“a fairer sample of the history of life.”砌this new collection of material.they found a complete reversal of the relationship between species richness and temperature from what their previous paper argued:the number of different groups present in the fossil record was higher,rather than lower,durin9“greenhouse phases.” Their previous findings rested on an assumption that fossil records can be taken to represent biodiversity changes throughout history.Thisn’t necessarily the case.because there are certain periods with higher.quality fossil samples.and some that are much more difficult to sample well.Aware of this bias.Mayhew’s team used data that standardized the number of fossils examined throughout history and accounted for other variables like sea level changes that might influence biodiversity in their new study to see if their old results would hold up. Two years later,the results did not.But then why doesnt life increasingly emerge on Earth as our temperatures get warmer?While the switch may prompt some to assert that climate change is not hazardous to living creatures,Mayhew explained that the timescales in his team’s study are huge--over 500million years--and therefore inappropriate for the shorter periods that we might look at as humans concerned about global wanning.Many global warming concerns are focused on the next century.He said——and the lifetime of a species is typically one to 10 million years. “I do worry that these findings vill be used by the climate skeptic community to say‘look.Climate warming is fine。he said.Not to mention the numerous other things we seem to do to create a storm of threats to biodiversity—think of what habitat(栖息地)destruction,overfishing,and pollution can do for a species’viability(生存力).Those things,Mayhew explained,give the organisms a far greater challenge in coping with climate change than they would have had in the absence of humans. “If we were to relax all these pressures on biodiversity and allow the world to recover over millions of years in a warmer climate.then my prediction is it would be an improvement in biodiversity,”he said.So it looks like we need to curb our reckless treatment of the planet first,if we want to eventually see a surge in the number of species on the planet as temperatures get warmer.We dont have 500 million years to wait. What is the finding of Peter Mayhew’s recent study?
A.Higher temperature causes the low biodiversity of marine invertebrates.
B.Fossil record can represent a relatively believable history of life.
C.The number of fossils was higher during greenhouse phases.
D.Global warming might promote the richness of species on Earth.
B.The supermarket is going to move away.
C.The man probably likes drinking coffee.
D.The woman will stock up on coffee.
B.The woman thinks the man shouldnt take Flight 213.
C.The flight will leave for New York very soon.
D.Flight 213 is delayed because of snowy weather.
B.Having a good quality lock.
C.Hiring a strong gatekeeper.
D.Having a good neighbor,
A.They are highly intelligent animals.
B.They are too huge to measure.
C.They are blue and difficult to see.
D.They can move in three dimensions freely..
Questions下列各are based on the following passage. Ive twice been to college admissions wars, and as I survey the battle field, something different is happening. Its one upmanship among parents. We see our kids college 36 as trophies (战利品) attesting to how well weve raised them. But we cant acknowledge that our obsession is more about us than them. So weve contrived various 37 that turn out to be haft truths, prejudices or myths. We have a full blown prestige panic; we worry that there wont be enough trophies to go around. Fearful parents urge their children to apply to more schools than ever. Underlying the hysteria is the belief that scarce 38 degrees must be highly valuable. Their graduates must enjoy more success because they get a better education and develop better contacts. All thats 39 --and mostly wrong. Selective schools dont systematically 40 better instructional approaches than less-selective schools. Some do; some dont. On two measures--professors feedback and the number of essay exams--selective schools do slightly worse. By some studies, selective schools do enhance their graduates lifetime earnings. The gain is reckoned at 2 percent to 4 percent for every 100 point increase in a schools average SAT scores. But even this advantage is probably a 41 fluke (偶然;侥幸). A well kno,vn study by Princeton economist Alan Krueger and Stacy Berg Dale of Mathematica Policy Research examined students who got into highly selective schools and then went elsewhere. They earned just as much as graduates from other schools. Kids count more than their colleges. Getting into Yale may 42 intelligence, talent and ambition.But its not the only indicator and, 43 , its significance is declining. The reason: so many similar people go elsewhere. Getting into college isnt lifes only competition. In the next competition--the job market, graduate school--the results may change. Old boy networks are breaking down. Krueger studied admissions to one top Ph.D. program. High scores on the Graduate Record Exam helped explain who got in; Ivy League degrees didnt. So, parents, lighten up. The stakes have been vastly exaggerated. Up to a point, we can 44 our pushiness(一意孤行). America is a competitive society; our kids need to adjust to that. But too much pushiness can be 45 . The very ambition we impose on our children may get some into Harvard but may also set them up for disappointment. One study of students 20 years out found that, other things being equal, graduates of highly selective-schools experienced more job dissatisfaction. They may have been so conditioned to being on top that anything less disappoints. A)advantageous I) manipulate B)contrarily J)meditate C)destructive K)plausible D)elite L)ranks E)employ M)rationalize F)jlmction N)signify G)justifications O)statistical H)literally 第36题应填_____
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