大家在备考GMAT考试的时候，需要准备的复习材料很多，对于计划参加GMAT考试的人来说，要想在GMAT考试中获取好的成绩，做适量的练习是必须的，下面就通过解答下面的GMAT练习材料来总结一些解题方法吧。

 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

答案：BCDCD BEADA

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