17. There has been a 30-fold increase in the incidence of malaria caused by increasing mosquito resistance against pesticides.
（A） increase in the incidence of malaria caused by increasing mosquito resistance against
（B） increase in the incidence of malaria because of increasing resistance of mosquitoes to
（C） increasing malaria incidence because of increasing resistance of mosquitoes to
（D） incidence of malaria increase caused by increasing mosquito resistance against
（E） incidence of malaria increase because of increased mosquito resistance to
18.Aging is a property ofJ1animakthat reach a fixed size at maturity， and the variations in life spans among different species are far greater as that among individuals from the same species： a fruit fly is ancient at 40 days， a mouse at 3years， a horse at 30， a man at 100， and some tortoises at 150.
（A）among different species are far greater as that among individuals from
（B）among different species are far greater than that among individuals from
（C）among different species are far greater than those
（D）between different species are far more than that between individuals of
（E）between different species are greater by far than is that between individuals from
19.The herbicide Oryzalin was sti11 being produced in 1979， three years after the wives of workers producing the chemical in Rensselaer， New York， were found to have borne children with heart defects or miscarriages， and none of their pregnancies was normal.
（A） to have borne children with heart defects or miscarriages， and none of their pregnancies was
（B） to gave had children born with heart defects or miscarriages， and none of the pregnancies was
（C） either to have had children with heart defects or miscarriages， without any of their pregnancies being
（D） either to have had miscarriages or to have borne children with heart defects； none of the pregnancies was
（E） either to have had miscarriages or children born with heart defects， without any of their pregnancies being
20. Never before in the history of music have musical superstars been able to command so extraordinary fees of the kind they do today.
（A）so extraordinary fees of the kind they do today
（B）so extraordinary fees as they are today
（C）such extraordinary fees as they do today
（D）such extraordinary fees of the kind today's have
（E）so extraordinary a fee of the kind they can today
21. As it becomes more frequent to have spouses who both work outside the home， companies are beginning to help in finding new employment for the spouses of transferred employees.
（A）it becomes more frequent to have spouses who both work out side the home
（B）it becomes more frequent to have couples both working outside the home
（C）it becomes more common that both husband and wife should be working outside the home
（D）it becomes more common for both husband and wife to work outside the home
（E）coup1es in which6oth of the spouses working outside the home become more common
22. Like the one reputed to live in Loch Ness， also an inland lake connected to the ocean by a river， inhabitants of the area around Lake Champlain claim sightings of a long and narrow “sea monster.”
（A） Like the one reputed to live in Loch Ness， also an inland lake connected to the ocean by a river， inhabitants of the area around Lake Champlain claim sightings of a long and narrow “sea monster.”
（B）Inhabitants of the area around Lake Champlain claim sightings of a long and narrow “sea monster” similar to the one reputed to live in Loch Ness， which， like Lake Champlain， is an inland lake connected to the ocean by a river.
（C）Inhabitants of the area around Lake Champlain claim sightings of a long and narrow “sea monster” similar to Loch Ness's， which， like Lake Champlain， is an inland lake connected to the ocean by a river.
（D）Like Loch Ness， s reputed monster， inhabitants of the area around Lake Champlain， also an in1and 1ake connected to the ocean by a river， claim sightings of a 1ong and narrow“sea monster.”
（E）Similar to that reputed to live in Loch Ness， inhabitants of the area around Lake Champlain ， a1an inland lake connected to the ocean by a river， c1aim sightings of a long and narrow“sea monster.
23. Since 1965 there are four times as many Black college students enrolled， and the one million Black people in college today represent 11 percent of all college students.
（A） Since 1965 there are four times as many Black college students enrolled
（B） The enrollment of Black college students was only one fourth in l 965
（C）The enrollment of Black college students has increased four times from l 965 on
（D）Quadrupling since l965， there are now four times as many Black college students enrolled
（E）The enrollment of Black college students has quadrupled since 1965
24.A common disability in test pilots is hearing impairment， a consequence of sitting too close to large jet engines for long periods of time.
（A）a consequence of sitting too close to large jet engines for long periods of time
（B）a consequence from sitting for long periods of time too near to large jet engines
（C）a consequence which resulted from sitting too close to large jet engines for long periods of time
（D）damaged from sitting too near to large jet engines for long periods of time
（E）damaged because they sat too close to large jet engines for long periods of time
25. Europe's travel industry is suffering as a result of a sluggish economy， a stretch of bad weather， as well as the chilling effects of terrorist activity that is persistent.
（A）as well as the chilling effects of terrorist activity that is persistent
（B）and the cm11ing effect of terrorist activity that is persistent
（C）but persistent terrorist activity has had a chilling effect too
（D）and the chilling effects of persistent terrorist activity
（E）as well as the chilling effects of terrorist of terrorist activity that persists
26. Opening with tributes to jazz-age divas like Bessie smith and closing with Koko Taylor's electrified gravel-and-thunder songs，the program will trace the blues' vigorous matriarchal line over more than 50 years.
（A）the program will trace
（B）the program s6a11 trace
（C）there will be a program tracing
（D）it is a program that traces
（E） it will be a program tracing
27. In 1929 relatively small declines in the market ruined many speculators having bought on margin； they had to sell， and their selling pushed other investors to the brink.
（A）specu1ators having bought on margin； they had to sell，and
（B）specu1ators who had bought on margin； having had to sell，
（C）speculators who had bought on margin； they had to sell， and
（D）specu1ators， those who bad bought on margin；these speculators had to sell， and
（E）speculators， who， having bought on margin and having to sel1，
28. The mistakes children make in learning to speak tell linguists more about how they learn language than the correct forms they use.
（A） how they learn language than
（B） how one learns language than
（C） how children learn language than do
（D） learning language than
（E） their language learning than do
29. Building 1arge new hospitals in the bistate area would constitute a wasteful use of resources， on the basis of avoidance of duplicated facilities alone.
（A）on the basis of avoidance of duplicated facilities alone
（B）on the grot1nds of avoiding duplicated facilities alone
（C）solely in that duplicated facilities should be avoided
（D）whi1e the duplication of facilities should be avoided
（E）if on1y because the duplication of facilities should be avoided
30. Freedman's survey showed that people living in small towns and rural areas consider themselves no happier than do people living in big cities.
（A） no happier than do people living
（B） not any happier than do people living
（C） not any happier than do people who live
（D） no happier than are people who are living
（E） not as happy as are people who live
31.It may someday be worthwhile to try to recover uranium from seawater， but at present this process is prohibitively expensive.
（A）It may someday be worthwhile to try to recover uranium from seawater
（B）Someday， it may be worthwhile to try and recover uranium from seawater
（C）Trying to recover uranium out of seawater may someday be worthwhile
（D）To try for the recovery of uranium out of seawater may someday be worthwhile
（E）Recovering uranium from seawater may be worthwhile to try to do someday
32. The underlying physica1 principles that control the midair gyrations of divers and gymnasts are the same as the body orientation controlling astronauts in a weightless environment.
（A）as the body orientation controlling
（B）as the body orientation which controls
（C）as those controlling the body orientation of
（D）ones to control the body orientation of
（E）ones used in controlling the body orientation of
33.The spraying of pesticides can be carefully planned， but accidents， weather conditions that could not be foreseen， and pilot errors often cause much larger deposits of spray than they had anticipated.
（A）weather conditions that could not be foreseen，and pilot errors often cause much larger deposits of spray than they had
（B）weather conditions that cannot be foreseen， and pilot errors often cause much larger deposits of spray than
（C）unforeseeable weather conditions， and pilot errors are the cause of much larger deposits of spray than they had
（D）weather conditions that are not foreseeable，and pilot errors often cause much larger deposits of spray than
（E）unforeseeable weather conditions， and pilot errors often cause much larger deposits of spray than they had
34.To read of Adams' lengthy separation from her family， her difficult travels， and her constant battles with illness is to fell intensely how harsh life was even for the so-called aristocracy of Revolutionary times.
（A）To read of
（B）Reading about
（C）Having read about
（D）Once one reads of
（E）To have read of
35. A star wil1 compress itself into a white dwarf， a neutron star， or a black hole after it passes through a red giant stage， depending on mass.
（A）A star will compress itself into a white dwarf， a neutron star， or a black hole after it passes through a red giant stage， depending on mass
（B）After passing through a red giant stage， depending on its mass， a star will compress itself into a white dwarf， a neutron star， or a black hole.
（C）After passing through a red giant stage， a star's mass will determine if it compresses itself into a white dwarf， a neutron star， or a black hole
（D）Mass determines whether a star， after passing through the red giant stage， will compress itself into a white dwarf， a neutron star， or a black hole
（E）The mass of a star， after passing through the red giant stage， will determine whether it compresses itself into a white dwarf， a neutron star， or a black hole
36.In the main， incidents of breakdowns in nuclear reactors have not resulted from lapses of high technology but commonplace inadequacies in plumbing and wiring.
（A）not resulted from lapses of high technology but
（B）resu1ted not from 1apsesdhigh technology but from
（C）resu1ted from 1apses not of high technology but have stemmed from
（D）resulted from lapses not of high technology but have stemmed from
（E）resu1ted not from lapses of high technology but have stemmed from
37. Seeming to be the on1y organization fighting for the rights of poor people in the South， Hosea Hudson，a 1aberer in Alabama，joined the Communist party in 1931.
（A）Seeming to be
（B）As
（C）In that they seemed
（D）Since it seemed
（E）Because it seemed to be
38. Although many art patrons can readi1v differentiate a good debenture from an undesirable one， they are much less expert in distinguishing good paintings and poor ones， authentic art and fakes.
（A）much less expert in distinguishing good paintings and poor ones， authentic art and
（B）far less expert in distinguishing good paintings from per ones， authentic art from
（C）much less expert when it comes to distinguishing good paintings and per ones， authentic art from
（D）far less expert in distinguishing good paintings and poor ones， authentic art and
（E）far less the expert when it comes to distinguishing between good painting， poor ones， authentic art， and
39.Rules banning cancer－causing substances from food apply to new food additives and not to natura1 constituents of food because their use as additives is entirely avoidable.
（A）their use as additives is
（B）as additives， their use is
（C）the use of such additives is
（D）the use of such additives are
（E）the use of them as additives is
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