48. (34221-!-item-!-188;#058&007550)
Parasitic wasps lay their eggsdirectly into the eggs of various host insects in exactly the right numbers forany suitable size of host egg. If theylaid too many eggs in a host egg, the developing wasp larvae would compete witheach other to the death for nutrients and space. If too few eggs were laid, portions of thehost egg would decay, killing the wasp larvae.
Which of the following conclusionscan properly be drawn from the information above?
(A) The size of the smallest hostegg that a wasp could theoretically parasitize can be determined from thewasp's egg-laying behavior.
(B) Host insects lack any effectivedefenses against the form of predation practiced by parasitic wasps.
(C) Parasitic wasps learn fromexperience how many eggs to lay into the eggs of different host species.
(D) Failure to lay enough eggswould lead to the death of the developing wasp larvae more quickly than wouldlaying too many eggs.
(E) Parasitic wasps use visualclues to calculate the size of a host egg.
OA：A。为什么不选D呢？我觉得同类抢资源打架不会赶尽杀绝啊，最多就是长得胖和吃得不好的区别。被HOST反虐绝是要灭口的啊~
55. (34557-!-item-!-188;#058&007575)
According to the TristateTransportation Authority, making certain improvements to the main commuter railline would increase ridership dramatically. The authority plans to finance these improvements over the course offive years by raising automobile tolls on the two highway bridges along theroute the rail line serves. Although theproposed improvements are indeed needed, the authority's plan for securing thenecessary funds should be rejected because it would unfairly force drivers toabsorb the entire cost of something from which they receive no benefit.
Which of the following, if true,would cast the most doubt on the effectiveness of the authority's plan tofinance the proposed improvements by increasing bridge tolls?
(A) Before the authority increasestolls on any of the area bridges, it is required by law to hold public hearingsat which objections to the proposed increase can be raised.
(B) Whenever bridge tolls areincreased, the authority must pay a private contractor to adjust the automatedtoll-collecting machines.
(C) Between the time a proposedtoll increase is announced and the time the increase is actually put intoeffect, many commuters buy more tokens than usual to postpone the effects ofthe increase.
(D) When tolls were last increasedon the two bridges in question, almost 20 percent of the regular commutertraffic switched to a slightly longer alternative route that has since beenimproved.
(E) The chairman of the authorityis a member of the Tristate Automobile Club that has registered strongopposition to the proposed toll increase.
56. (34605-!-item-!-188;#058&007579)
Crops can be traded on the futuresmarket before they are harvested. If apoor corn harvest is predicted, prices of corn futures rise; if a bountifulcorn harvest is predicted, prices of corn futures fall. This morning meteorologists are predictingmuch-needed rain for the corn-growing region starting tomorrow. Therefore, since adequate moisture isessential for the current crop's survival, prices of corn futures will fallsharply today.
Which of the following, if true,most weakens the argument above?
(A) Corn that does not receiveadequate moisture during its critical pollination stage will not produce abountiful harvest.
(B) Futures prices for corn havebeen fluctuating more dramatically this season than last season.
(C) The rain that meteorologistspredicted for tomorrow is expected to extend well beyond the corn-growingregion.
(D) Agriculture experts announcedtoday that a disease that has devastated some of the corn crop will spreadwidely before the end of the growing season.
(E) Most people who trade in cornfutures rarely take physical possession of the corn they trade.
59. (34753-!-item-!-188;#058&007583)
A certain mayor has proposed a feeof five dollars per day on private vehicles entering the city, claiming thatthe fee will alleviate the city's traffic congestion. The mayor reasons that, since the fee willexceed the cost of round-trip bus fare from many nearby points, many peoplewill switch from using their cars to using the bus.
Which of the following statements,if true, provides the best evidence that the mayor's reasoning is flawed?
(A) Projected increases in theprice of gasoline will increase the cost of taking a private vehicle into thecity.
(B) The cost of parking feesalready makes it considerably more expensive for most people to take a privatevehicle into the city than to take a bus.
(C) Most of the people currentlyriding the bus do not own private vehicles.
(D) Many commuters opposing themayor's plan have indicated that they would rather endure traffic congestionthan pay a five-dollar-per day fee.
(E) During the average workday,private vehicles owned and operated by people living within the city accountfor twenty percent of the city's traffic congestion.
OA：B。我E了~
Thx~~
另外想问一下：怎么才能提高CR部分啊？不计时正确率相当高，一计时就当场死菜了。。怎么办啊~
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ro-Tect cannot reduce the number of car-theft policies it carries, so it cannot protect itself against continued large payouts that way.【consideration】 Therefore, Pro-Tect has decided to offer a discount to holders of car-theft policies whose cars have antitheft devices.【strategy】 Many policyholders will respond to the discount by installing such devices,【效果】 since the amount of the discount will within two years typically more than cover the cost of installation.【产生效果的原因】 Thus, because cars with antitheft devices are rarely stolen, Pro-Tect's plan is likely to reduce its annual payouts.【结论】
发表于 2010-10-25 11:42:54
