大全15-13

gracezz

A severe drought can actually lessen the total amount of government aid that United States farmers receive as a group. The government pays farmers the amount, if any, by which the market price at which crops are actually sold falls short of a preset target price per bushel for the crops. The drought of 1983, for example, caused farm-program payments to drop by $10 billion.

Given the information above, which of the following, if true, best explains why the drought of 1983 resulted in a reduction in farm-program payments?

(A) Prior to the drought of 1983, the government raised the target price for crops in order to aid farmers in reducing their debt loads.

(B) Due to the drought of 1983, United States farmers exported less food in 1983 than in the preceding year.

(C) Due to the drought of 1983, United States farmers had smaller harvests and thus received a higher market price for the 1983 crop than for the larger crop of the preceding year.

(D) Due to the drought of 1983, United States farmers planned to plant smaller crops in 1984 than they had in 1983.（C）

(E) Despite the drought of 1983, retail prices for food did not increase significantly between 1982 and 1983.


给的补助是target price和实际售价的差。=target price - 售价，所以补助少可能是target price 少或者是售价高。因此是C。A是增加了target price所以应该是增加补助与题相反

思路是这样吗？


Given the information above, which of the following, if true, best explains why the drought of 1983 resulted in a reduction in farm-program payments?

(A) Prior to the drought of 1983, the government raised the target price for crops in order to aid farmers in reducing their debt loads.

(B) Due to the drought of 1983, United States farmers exported less food in 1983 than in the preceding year.

(C) Due to the drought of 1983, United States farmers had smaller harvests and thus received a higher market price for the 1983 crop than for the larger crop of the preceding year.

(D) Due to the drought of 1983, United States farmers planned to plant smaller crops in 1984 than they had in 1983.（C）

(E) Despite the drought of 1983, retail prices for food did not increase significantly between 1982 and 1983.


给的补助是target price和实际售价的差。=target price - 售价，所以补助少可能是target price 少或者是售价高。因此是C。A是增加了target price所以应该是增加补助与题相反

思路是这样吗？

gracezz

Biometric access-control systems—those using fingerprints, voiceprints, etc., to regulate admittance to restricted areas—work by degrees of similarity, not by identity. After all, even the same finger will rarely leave exactly identical prints. Such systems can be adjusted to minimize refusals of access to legitimate access-seekers. Such adjustments, however, increase the likelihood of admitting impostors.

Which of the following conclusions is most strongly supported by the information above?

(A) If a biometric access-control system were made to work by identity, it would not produce any correct admittance decisions.

(B) If a biometric access-control system reliably prevents impostors from being admitted, it will sometimes turn away legitimate access-seekers.

(C) Biometric access-control systems are appropriate only in situations in which admittance of impostors is less of a problem than is mistaken refusal of access.

(D) Nonbiometric access-control systems—based, for example, on numerical codes—are less likely than biometric ones to admit impostors.（B）

(E) Anyone choosing an access-control system should base the choice solely on the ratio of false refusals to false admittances.

我发现这种推出结论的题，我老错