[单项选择]Which of the following most logically completes the argument below
In recent years, the proportion of car buyers who buy new cars rather than used cars has declined. Some consumers have attributed this change to an increase in new-car prices. As evidence of the price increase, they cite figures that show that, even adjusting for inflation, the price that the buyer of a new car pays, on average, is far higher now than a few years ago. This evidence is unpersuasive, however, because（）.
A. the value of a car that is bought new declines much more rapidly than does the value of a car that is bought used
B. after someone has bought a car, it might be several years before that person next buys a car
C. a decline in the proportion of car buyers who buy new cars must necessarily mean that the proportion who buy used cars has increased
D. the relative increase in used-car sales might be explained by the decisions of only a small proportion of all car buyers
E. the change in the average price paid for a new car could result solely from more people’s rejecting inexpensive new cars in favor of used cars

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[单项选择]Which of the following most logically completes the argument below
Alone among living species, human beings experience adolescence, a period of accelerated physical growth prior to full maturity. Whether other hominid species, which are now all extinct and are known only through the fossil record, went through adolescence cannot be known, since （）.
A. the minimum acceleration in physical growth that would indicate adolescence might differ according to species
B. the fossil record, though steadily expanding, will always remain incomplete
C. detecting the adolescent growth spurt requires measurements on the same individual at different ages
D. complete skeletons of extinct hominids are extremely rare
E. human beings might be the first species to benefit from the survival advantages, if any, conferred by adolescence

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[单项选择]Which of the following, if true, most logically completes the passage
Every fusion reaction releases neutrinos. To test a hypothesis about the frequency of fusion reactions in the Sun, physicists calculated the number of neutrinos the Sun would produce annually if the hypothesis were correct. From this they estimated how many neutrinos should pass through a particular location on Earth. The fact that far fewer neutrinos were counted than were predicted to pass through the location would seem to prove that the hypothesis is wrong, except that
A. the physicists, using a different method for estimating how many neutrinos should reach the location, confirmed their original estimate
B. there are several competing hypotheses about the frequency of solar fusion reactions
C. there is not enough energy in the Sun to destroy a neutrino once it is released
D. the method used to count neutrinos detects no more than approximately ten percent of the neutrinos that pass through
E. (E) neutrinos released in the fusion reactions of other stars also reach the Earth

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[单项选择]Which of the following, if true, best completes the argument below
Comparisons of the average standards of living of the citizens of two countries should reflect the citizens’ comparative access to goods and services. Reliable figures in a country’s own currency for the average income of its citizens are easily obtained. But it is difficult to get an accurate comparison of average standards of living from these figures, because （）.
A. there are usually no figures comparing how much of two different currencies must be spent in order to purchase a given quantity of goods and services
B. wage levels for the same job vary greatly from country to country, depending on cultural as well as on purely economic factors
C. these figures must be calculated by dividing the gross national product of a country by the size of its population
D. comparative access to goods and services is only one of several factors relevant in determining quality of life
E. the wealth, and hence the standard of living, of a country’s citizens is very closely related to their income

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[单项选择]
Directions: Choose the word that best completes the meaning.

One of the basic characteristics of capitalism is the private ownership of the major means of production—capital. The ownership of large amounts of capital can bring (41) profits, as well as economic and political power. Some recent theorists, (42) have argued that our society has moved to a new stage of (43) that they call "postindustrial" society. One important change in such society is that the ownership of (44) amounts of capital is no longer the only or even the most important (45) of profits and influence; knowledge as well as (46) capital brings profits and influence.
There are many (47) with the thesis above, not the least of (48) is that wealthy capitalists can buy the experts and knowledge they need to keep th
A. deny
B. refuse
C. admit
D. acknowledge

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