| GMAT考试每日一练（2019/6/25） |
| 第1题：The questions in this group are based on the content of a passage.After reading the passage, choose the best answer to each question.Answer all questions following the passage on the basis of what is stated or implied in the passage. Since the 1970s, a multitude of scientists from the fields of climatology, oceanography, and biology have been warning the governments of the world that unless human societies reduce their emissions of "greenhouse gases"--gases such as carbon dioxide and methane that increase the capacity of the atmosphere to retain heat--world-wide global warming caused by these gases will result in catastrophic consequences for people and the environment. InDecember 1997, a group of delegates from over 100 nations gathered together in Kyoto, Japan, in order to work out the details of the Kyoto Protocol to the United Nations FrameworkConvention onClimateChange, the most comprehensive international effort to date to combat the rise of greenhouse gas emissions. The chief goal of the Kyoto Protocol is for industrialized nations to reduce their emissions of green-house gases by 5.2 percent compared to 1990 levels. The gases targeted by the protocol are carbon dioxide, methane, nitrous oxide, sulfur hexafluoride, HFCs, and PFCs. The protocol contains some provisions for developing nations, but as the per-capita emissions of greenhouse gases from these nations are much lower than those of industrialized nations, the majority of the reductions called for by the protocol come from theEuropean Union (8 percent reduction from 1990 levels), the United States (7 percent reduction), and Japan (6 percent reduction). Proponents of the Kyoto Protocol maintain that although it is not sufficient by itself to halt global warming, it represents an important first step toward a sustainable global economy. These proponents argue that most of the reductions in green-house gases can be achieved through improvements in efficiency and the use of cleaner fuels. While they concede that the provisions of the protocol may slow economic growth in affected nations, they maintain that the potential economic costs are far outweighed by the benefits of avoiding the ravages of global warming, which they say could include rising sea levels, erratic weather patterns, and long-term reductions in biodiversity. Critics of the Kyoto Protocol argue that it is unnecessary, unfair, and too costly to implement. It is unnecessary, they maintain, because the scientific community is still divided on the questions of whether global warming is happening and, if it is, whether human activity is the cause. They say it is unfair because the provisions primarily limit the emissions growth of industrialized nations while giving free rein to developing nations such as India, which actually emit more greenhouse gases than many industrialized nations, and that this situation will give the developing nations an economic edge in the global marketplace. Furthermore, they argue, the costs of switching fuels and limiting energy use will severely damage the economy, and the negative effects of this economic depression will outweigh any theoretical gains to be had by delaying global warming. According to the passage, what is the likely response of a supporter of the Kyoto Protocol to the argument that implementation of the protocol will cause undue economic hardship for industrialized nations A、It is only fair for industrialized nations to pay the majority of the expenses for enforcing the protocol, since industrialized nations have the majority of the money in the worlD、 B、While the Kyoto Protocol may cause some economic hardship to certain industries in industrialized nations, the protocol represents an important first step toward the development of a sustainable global economy. C、Technological improvements, such as the hybrid fuel-cell car, will allow fuel- efficient machines to offe |
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| 第2题：The following questions present a sentence, part of which or all of which is underlineD、Beneath the sentence, you will find five ways of phrasing the underlined part. The first of these repeats the original; the other four are different. If you think the original is best, choose the first answer; otherwise choose one of the others. These questions test correctness and effectiveness of expression. In choosing your answer, follow the requirements of standard writtenEnglish; that is, pay attention to grammar, choice of words, and sentence construction.Choose the answer that produces the most effective sentence; this answer should be clear and exact, without awkwardness, ambiguity, redundancy, or grammatical error. Although no proof yet exists of the electromagnetic disturbances observed being the results of nuclear weapons testing, diplomats are treating the situation with utmost delicacy. A、of the electromagnetic disturbances observed being the results of nuclear weapons testing B、regarding the observed electromagnetic disturbances having been the results of nuclear weapons testing C、that the electromagnetic disturbances observed were the results of nuclear weapons testing D、that nuclear weapons testing resulted in the electromagnetic disturbances having been observed E、that the electromagnetic disturbance observed were resulting from nuclear weapons testing |
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第3题：设直线nx+(n+1)y=1(n为正整数)与两坐标轴围成的三角形面积Sn(n=1，2，…，2009)，则S1+S2+…+S2009=()． |
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| 第4题：Not all employment selection mechanisms that have a "disparate effect," that is, that screens out a percentage of minorities or women disproportionate to their presence in the relevant labor market, are unlawful. （） (A) that is, that screens out a percentage of minorities or women disproportionate to (B) which means, that screens out a percentage of minorities or women disproportionate with (C) which means, that screen out a percentage of minorities or women disproportionate with (D) that is, that screen out a percentage of minorities or women disproportionate to (E) that is, that screens out a percentage of minorities or women disproportionate with |
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| 第5题：The following data sufficiency problems consist of a question and two statements, labeled (1) and (2), in which certain data are given. You have to decide whether the data given in the statements are sufficient for answering the question. Using the data given in the statements plus your knowledge of mathematics and everyday facts (such as the number of days in July or the meaning of counterclockwise), you must indicate whether A、 Statement (1)ALONE、is sufficient, but statement (2) alone is not sufficient. B、 Statement (2)ALONE、is sufficient, but statement (1) alone is not sufficient. C、BOTH statements TOGETHER are sufficient, but NEITHER statementALONE、is sufficient. D、EACH statementALONE、is sufficient. Ｅ. Statements (1) and (2) TOGETHER are NOT sufficient. If p+q=400 and p＜q, is p+q＜r+s (1) p+r+s=600 (2) q+r＞400 |
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| 第6题：The questions in this group are based on the content of a passage.After reading the passage, choose the best answer to each question,Answer all questions following the passage on the basis of what is stated or implied in the passage. Forget hostile aliens.According to a forthcoming book by noted astrophysicistEgbert Larson, the intrepid humans who first attempt interstellar space travel will face far more daunting challenges before they ever meet the Little Green Men. Larson begins with the problem of relativistic time dilation. If you travel all the way toAlphaCentauri, you’d like to come back and tell your friends about it, right It’s not too likely to happen, though. If Mr.Einstein was right about relativity--and we’re not going to say he wasn’t--then time slows down when you approach the speed of light.A、person traveling at any velocity near the speed of light will age only days for every week, month, or even year that passes on earth. Relativity does not present a problem for interstellar space travel, per se, but it does mean that interstellar civilizations or even just interstellar communications will require a mind-boggling amount of calendar juggling. Did we mention that you’d have to travel at near the speed of light That’s because the distance between stars is so vast that even if you could travel at the speed of light--which, Larson reminds us, you can’t--it would take more than four years to reach our closest star neighbors,Alpha Proxima andAlphaCentauri, and decades or centuries to reach the other stars in our "immediate neighborhooD、"And if you tried to accelerate directly to the speed of light like they do in the movies, you’d be instantly splattered on the back of your theoretical spacecraft.Achieving anything close to light speed will require sustained accelera- tion at a level that human bodies can withstand--say, a crushing two gravities--for over a year.Better hope somebody brings some chips. Speaking of chips, food is going to be a problem. Since it is economically, if not physically, impossible to accelerate 200 years’ worth of food to nearly the speed of light, and since you’re not likely to find any grocery stores along the way, someone will have to figure out how to make food in space. Keeping a crew alive on the way turns out to be the trickiest part of all. Once you’ve got the nearly impossible physics of space travel worked out, you still have to figure out the chemistry and biology of keeping your air and water clean and keeping your crew fed and safe from radiation and infection, and--did we mention the 200 years --you’ll probably need several generations of crew members to complete the trip.Ever been on a bus for more than 24 hours It’s not a pretty picture. We applaud Larson for his insightful writing and his scrupulous attention to scientific detail. For those of you seeking a cold, hard look at the reality of interstellar space travel, this is a stellar reaD、But be warned: Larson doesn’t let you down gently. For those of you sincerely hoping to beam up with Scotty--and you know who you are--you might want to give this one a pass. According to the passage, which of the following will present the most difficult challenge for humans attempting interstellar space travel A、Achieving velocities near the speed of light B、Withstanding the acceleration necessary for traversing interstellar distances C、Maintaining clean air and water on a journey that could last centuries D、Accommodating the effects of relativistic time dilation E、Enabling the humans on board to survive during the journey |
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| 第7题：The following data sufficiency problems consist of a question and two statements, labeled (1) and (2), in which certain data are given. You have to decide whether the data given in the statements are sufficient for answering the question. Using the data given in the statements plus your knowledge of mathematics and everyday facts (such as the number of days in July or the meaning of counterclockwise), you must indicate whether A、Statement (1)ALONE、is sufficient, but statement (2) alone is not sufficient. B、Statement (2)ALONE、is sufficient, but statement (1) alone is not sufficient. C、BOTH statements TOGETHER are sufficient, but NEITHER statementALONE、is sufficient. D、EACH statementALONE、is sufficient. Ｅ. Statements (1) and (2) TOGETHER are NOT sufficient. If b＞a, then a is what percent of b (1) a=4 (2) b=4a |
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第8题：What is the twenty-third decimal to the right in the fraction  A、1 B、2 C、3 D、4 E、5 |
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| 第9题：If a cube has a total surface area of 96, what is its volume A、16 B、36 C、64 D、81 E、96 |
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| 第10题：The square root of 800 is between which of the following integers A、21 and 25 B、24 and 28 C、27 and 31 D、30 and 34 E、33 and 37 |
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