1、GWD-TN-10: Verbal-GWD-24-1 Tom Bradley was mayor of Los Angeles from 1973 to 1993, an era when the city had transformed from a collection of suburban neighborhoods to the second-largest city in the United States.A. an era when the city had transformed.B. an era during which the city was transformed.
2、C. an era that transformed it.D. during which era the city transformed.E. during which the city was transformed.-2. GWD-24-34. （原 34 題）Studying the fruit fly, a household nuisance but a time-honored experimental subject, has enabled the secrets of how embryos develop to begin to be unraveled by scie
3、ntists.A. Studying the fruit fly, a household nuisance but a time-honored experimental subject, has enabled the secrets of how embryos develop to begin to be unraveled by scientists.B. By the study of the fruit fly, a household nuisance and also a time-honored experimental subject, it was possible f
4、or the secrets of how embryos develo0p to begin to be unraveled by scientists.C. By studying a household nuisance but a time-honored experimental subject, the fruit fly enabled scientists to begin to unravel the secrets of how embryos develop.D. By studying the fruit fly, a household nuisance and al
5、so a time-honored experimental subject, the secrets of how embryos develop are beginning to be unraveled by scientists.E. The study of the fruit fly, a household nuisance but a time-honored experimental subject, has enabled scientists to begin to unravel the secrets of how embryos develop.-GWD-24 Q3
6、 TO 6More selective than most chemical pesticides in that they ordinarily destroy only unwanted species, biocontrol. agents (such as insects, fungi, and viruses) eat, infect, or parasitize targeted plant or animal pests. However, biocontrol agents can negatively affect nontarget species by, for exam
7、ple, competing with them for resources: a biocontrol agent might reduce the benefits conferred by a desirable animal species by consuming a plant on which the animal prefers to lay its eggs. Another example of indirect negative consequences occurred in England when a virus introduced to control rabb
8、its reduced the amount of open ground (because large rabbit populations reduce the ground cover), in turn reducing underground ant nests and triggering the extinction of a blue butterfly that had depended on the nests to shelter its offspring. The paucity of known extinctions or disruptions resultin
9、g from indirect interactions may reflect not the infrequency of such mishaps but rather the failure to look for or to detect them: most organisms likely to be adversely affected by indirect interactions are of little or no known commercial value and the events linking a biocontrol agent with an adve
10、rse effect are often unclear. Moreover, determining the potential risks of biocontrol agents before they are used is difficult, especially when a nonnative agent is introduced, because, unlike a chemical pesticide, a biocontrol agent may adapt in unpredictable ways, so that it can feed on or otherwi
11、se harm new hosts.Q3 The passage is primarily concerned withA. explaining why until recently scientists failed to recognize the risks presented by biocontrol agents.B. emphasizing that biocontrol agents and chemical pesticides have more similarties than differences.C. suggesting that only certain bi
12、ocontrol agents should be used to control plant or animal pasts.D. arguing that biocontrol agents involve risks, some of which may not be readily discerned.E. suggesting that mishaps involving biocontroll agents are relatively commonplace.-Q4 The passage suggests that the author would be most likely
13、 to agree with which of the following statements about the use of biocontrol agents?A. Biocontrol agent should be used only in cases where chemical pesticides have proven ineffective or overly dangerous.B. Extinctions and disruptions resulting from the use of biocontrol agents are likely to have inc
14、reasingly severe commercial consequences.C. The use of biocontrol agents does not require regulation as stringent as that required by the use of chemical pesticides.D. The use of biocontrol agents may even finally supersede the use of chemical pesticides in controlling unwanted species.E. The risks
15、of using native biocontrol agents may be easier to predict than the risks of using nonnative biocontrol agents.-GWD-24-Q5 Which of the following is mentioned in the passage as an indirect effect of using a biocontrol agent?A. Reduction of the commercial value of a desirable animal speciesB. An unint
16、ended proliferation of a nontarget animal speciesC. An unforeseen mutation in a target speciesD. Diminution of the positive effects conferred by a nontarget animal species.E. Competition for resources with a largest species.-GWD-24-6 The example presented by the author in lines 14-23 most clearly se
17、rves to illustrateA. a situation in which a species is less vulnerable to biocontrol agents than it would have been to chemical pesticides.B. a way in which the introduction of a biocontrol agent can affect a nontarget species.C. a nonnative agents adapting in an unpredictable way that results in da
18、mage to a new host.D. The contention that biocontrol agents can harm nontarget species by competing with them for resourcesE. the way in which indirect consequences from the use of biocontrol agents are most likely to occurs.-GWD-24-7 Which of the following most logically completes the argument belo
19、w?The expansion of large-scale farming in Africa and Asia has destroyed much of the natural vegetation on which elephants have historically depended, forcing them to turn to cultivated land to satisfy their enormous appetites. As a result, farmers have lost millions of dollars worth of crops annuall
20、y. Yet even if elephant sanctuaries were created on a widespread basis to guarantee elephants sufficient natural vegetation, the raiding would likely persist, since A. when elephants forage for food, they typically travel in herds.B. Foraging elephants have been known to cause substantial damage eve
21、n to plants that they do not eat.C. Some of the land where crops have suffered extensive damage from elephants has been allowed to return to its natural state.D. Elephants tend to prefer cultivated crops to wild vegetation as a food source.E. Elephant sanctuaries are usually created in areas that ar
22、e rich in the natural vegetation on which elephants have historically depended.-GWD-24-8 The results of the companys cost- cutting measures are evident in its profits, which increased five percent during the first three months of this year after it fell over the last two years. A. which increased fi
23、ve percent during the first three months of this year after it fellB. which had increased five percent during the first three months of this year after it had fallenC. which have increased five percent during the first three months of this year after fallingD. with a five percent increase during the
24、 first three months of this year after fallingE. with a five percent increase during the first three months of this year after having fallen-GWD-24-9 Part of the proposed increase in state education spending is due to higher enrollment, since the number of students in public schools have grown stead
25、ily since the mid-1980s and, at nearly 47 million, are at a record high.A. enrollment, since the number of students in public schools have grown steadily since the mid-1980s and, at nearly 47 million, are at.B. enrollment, with a number of students in public schools growing steadily since the mid-19
26、80s and, at nearly 47 million, reaching.C. enrollment: since students in public schools have grown steadily in number since the mid-1980s and, at nearly 47 million, have reached.D. enrollment: the number of students in public schools has grown steadily since the mid-1980s and, at nearly 47 million,
27、has reached.E. enrollment: students in public schools have grown steadily in number since the mid-1980s and , at nearly 47million, are at-GWD-24 Q10 TO 12 Is it possible to decrease inflation without causing a recession and its concomitant increase line in unemployment? The orthodox answer is “no.”
28、whether they support the “inertia” theory of inflation (that todays inflation rate is caused by yesterdays inflation, the state of the economic cycle, and external influences such as import prices) or the “rational expectations” theory (that inflation is caused by workers and employers expectations,
29、 coupled with a lack of credible monetary and fiscal policies), most economists agree that tight monetary and fiscal policies, which cause recessions, are necessary to decelerate inflation. They point out that in the 1980s, many European countries and the United States conquered high (by these count
30、ries standards) inflation, but only by applying tight monetary and fiscal policies that sharply increased unemployment. Nevertheless, some governments policymakers insist that direct controls on wages and prices, without tight monetary and fiscal policies, can succeed in decreasing inflation. Unfort
31、unately, because this approach fails to deal with the underlying causes of inflation, wage and price controls eventually collapse, the hitherto-repressed inflation resurfaces, and in the meantime, though the policy-makers succeed in avoiding a recession, a frozen structure of relative prices imposes
32、 distortions that do damage to the economys prospects for longterm growth.-GWD-24-10The passage suggests that the high inflation in the United States and many European countries in the 1980s differed from inflation elsewhere in which of the following ways?A. It fit the rational expectations theory o
33、f inflation but not the inertia theory of inflation.B. It was possible to control without causing a recession.C. It was easier to control in those countries by applying tight monetary and fiscal policies than it would have been elsewhere.D. It was not caused by workers and employers expectations.E.
34、It would not necessarily be considered high elsewhere.-GWD-24-11Which of the following, if true, would most strengthen the authors conclusion about the use of wage and price controls?A. Countries that repeatedly use wage and price controls tend to have lower long-term economic growth rates than do o
35、ther countries.B. Countries that have extremely high inflation frequently place very stringent controls on wages and prices in an attempt to decrease the inflation.C. Some countries have found that the use of wage and price controls succeeds in decreasing inflation but also causes a recession.D. Pol
36、icymakers who advocate the use of wage and price controls believe that these controls will deal with the underlying causes of inflation.E. Policymakers who advocate the use o wage and price controls are usually more concerned about long-term economic goals than about short-term economic goals.-GWD-2
37、4-12 The primary purpose of the passage is toA. apply two conventional theories.B. examine a generally accepted positionC. support a controversial policyD. explain the underlying causes of a phenomenonE. propose an innovative solution-GWD-24-13 Vivien Thomas, who had no formal medical training, in s
38、truggling against overwhelming odds, he became a cardiac surgeon and eventually to receive an honorary doctorate from Johns Hopkins University.A. who had no formal medical training, in struggling against over whelming odds, he becameB. having had no formal medical training, in struggling against ove
39、rwhelming odds to becomeC. who, having no formal medical training, he struggled against overwhelming odds in becomingD. who, having had no formal medical training and struggled against overwhelming odds, becameE. who had no formal medical training, struggled against overwhelming odds to become-GWD-2
40、4-14 In 1983 Argonias currency, the argon, underwent a reduction in value relative to the worlds strongest currencies. This reduction resulted in a significant increase in Argonias exports over 1982 levels. In 1987 a similar reduction in the value of the argon led to another increase in Argonias exp
41、orts. Faced with the need to increase exports yet again, Argonias finance minister has proposed another reduction in the value of the argon.Which of the following, if true, most strongly supports the prediction that the finance ministers plan will not result in a significant increase in Argonias exp
42、orts next year?A. The value of the argon rose sharply last year against the worlds strongest currencies.B. In 1988 the argon lost a small amount of its value, and Aronian exports rose slightly in 1989.C. The value of Argonias exports was lower last year than it was the year before.D. All of Argonias
43、 export products are made by factories that were operating at full capacity last year, and new factories would take years to build.E. Reductions in the value of the argon have almost always led to significant reductions in the amount of goods and services that Argonians purchase from abroad.-GWD-24-
44、15.Healthy lungs produce a natural antibiotic that protects them from infection by routinely killing harmful bacteria on airway surfaces. People with cystic fibroses, however, are unable to fight off such bacteria, even though their lungs produce normal amounts of the antibiotic. Since the fluid on airway surfaces in the lungs of people with cystic fibrosis bas an abnormally high salt concentration, scientists hypothesize that in high salt environments the antibiotic becomes ineffective at killing harmful bacteria.Which of
