40． The average weekly wage near1y doub1ed in the l970' s， rising from ＄ 114 to ＄ 220， yet the average worker ended the decade with a decrease in what their pay may buy.
（A） with a decrease in what their pay may buy
（B） with what was a decrease in what they were able to buy
（C）having decreased that which they could buy
（D） decreasing in purchasing power
（E） with a decrease in purchasing power

41. Since chromosome damage may be caused by viral infections， medical x-rays， and exposure to sunlight，it is important that the chromosomes of a population to be tested for chemically induced damage be compared with those of a control population.
（A）to be tested for chemically induced damage be compared with
（B）being tested for damage induced chemically are compared with
（C）being tested for chemically induced damage should be compared to
（D）being tested for chemically induced damage are to be compared to
（E）that is to be tested for chemically induced damage are to be comparable with

42． The suspect in the burglary was advised of his right to remain silent, told he could not leave, and was interrogated in a detention room.
（A）of his right to remain silent， told he could not leave， and was
（B）of his right to remain silent， told he could not leave， and
（C）his right to remain silent and that he could not leave and
（D）that he had a right to remain silent， could not leave， and was
（E）that he had a right to remain silent， that he could not leave， and was

43． The United States petroleum industry's cost to meet environmental regulations is projected at ten percent of the price per barrel of refined petroleum by the end of the decade.
（A） The United States petroleum industry's cost to meet environmental regulations is projected at ten percent of the price per barrel of refined petroleum by the end of the decade
（B） The United States petroleum industry's cost by the end of the decade to meet environmental regu1ations is estimated at ten percent of the price per barrel of refined petroleum（C）By the end of the decade， the United States petroleum industry's cost of meeting environ mental regulations is projected at ten percent of the price per barrel of refined petroleum
（D） To meet environmental regulations， the cost to the United States petroleum industry is estimated at ten percent of the price per barrel of refined petroleum by the end of the decade.
（E）It is estimated that by the end of the decade the cost to the United 5tates petroleum industry of meeting environmental regulations will be ten percent of the price per barrel of refined petroleum.

44．The relationship between corpulence and disease remain controversial, although statistics clearly associate a reduced life expectancy with chronic obesity.
(A) remain controversial, although statistics clearly associate a reduced life expectancy with
(B) remain controversial, although statistics clearly associates a reduced life expectancy with
(C) remain controversial, although statistics clearly associates reduced life expectancy to
(D) remains controversial, although statistics clearly associate a reduced life expectancy with
(E) remains controversial, although statistics clearly associates reduced life expectancy to

45． If industrial pollution continues to deplete the ozone layer， the resulting increase in ultraviolet radiation wil1 endanger human health， causing a rise in the incidence of skin cancer and eye disease， and perhaps even threatening global ecological systems.
（A） and perhaps even threatening
（B） and may even threaten
（C） and even a possible threat to
（D） as well as possibly threatening
（E） as well as a possible threat to

46． Quasars are so distant that their light has taken billions of years to reach the Earth； consequently，we see them as they were during the formation of the universe.
（A）we see them as they were during
（B）we see them as they had been during
（C）we see them as if during
（D） they appear to us as they did in
（E）they appear to us as though in

47．Unlike that of the Native Americans of British Columbia，the Plains，and the Southwest， those of Puget Sound lived in relatively small, autonomous villages.
（A） Unlike that of
（B） Unlike those of
（C） Unlike
（D） In contrast to that of
（E） Dissimilar to

答案：BCDCD BEADA CCEAA CBADB EBCEA BEDBA C

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