两道题

moremildseven

12.Since the routine use of antibiotics can give rise to resistant bacteria capable of surviving antibiotic environments, the presence of resistant bacteria in people could be due to the human use of prescription antibiotics. Some scientists, however, believe that most resistant bacteria in people derive from human consumption of bacterially infected meat.
Which of the following statements, if true, would most significantly strengthen the hypothesis of the scientists?
(A) Antibiotics are routinely included in livestock feed so that livestock producers can increase the rate of growth of their animals.
(B) Most people who develop food poisoning from bacterially infected meat are treated with prescription antibiotics.
(C) The incidence of resistant bacteria in people has tended to be much higher in urban areas than in rural areas where meat is of comparable quality.
(D) People who have never taken prescription antibiotics are those least likely to develop resistant bacteria.（A）
(E) Livestock producers claim that resistant bacteria in animals cannot be transmitted to people through infected meat.
13.The recent decline in the value of the dollar was triggered by a prediction of slower economic growth in the coming year. But that prediction would not have adversely affected the dollar had it not been for the government’s huge budget deficit, which must therefore be decreased to prevent future currency declines.
Which of the following, if true, would most seriously weaken the conclusion about how to prevent future currency declines?
(A) The government has made little attempt to reduce the budget deficit.
(B) The budget deficit has not caused a slowdown in economic growth.
(C) The value of the dollar declined several times in the year prior to the recent prediction of slower economic growth.
(D) Before there was a large budget deficit, predictions of slower economic growth frequently caused declines in the dollar’s value.（D）
(E) When there is a large budget deficit, other events in addition to predictions of slower economic growth sometimes trigger declines in currency value.

12题的D选项我怎么觉得我绕不出来了
13题的题干最后一句话没理解明白

sdcar2010

Premise:
1) The devaluation of the dollar was triggered by a prediction of slower economic growth
2) If there is no government's huge budget deficit,  the prediction alone will not affect the dollar devaluation.

Conclusion: government's huge budget deficit must be decreased to prevent future currency declines

Answer (D) Before there was a large budget deficit, predictions of slower economic growth frequently caused declines in the dollar's value.

If D is true, then premise 2 is wrong since apparently the prediction alone can cause the devaluation.  So D weakens the argument and D is the anwer

moremildseven

THX
what about the first question

sdcar2010

Choice A fills in the gap between meat and drug-resistant bacteria. It says that the livestock is treated routinely with antibiotics. Therefore drug-resistant bacteria could evolve therein. Thus, A is a strengthener.

moremildseven

but how about D

sdcar2010

D says nothing about the meat and bacterial connection.

cdwayne

13. But that prediction would not have adversely affected the dollar had it not been for the government's huge budget deficit, which must therefore be decreased to prevent future currency declines.

-->But that prediction would not have adversely affected the dollar IF it HAD not been for the government's huge budget deficit, which must therefore be decreased to prevent future currency declines.

-->But IF it HAD not been for the government's huge budget deficit, which must therefore be decreased to prevent future currency declines, that prediction would not have adversely affected the dollar.

-->The real cause is government's huge budget deficit.

myjoke

12题 加强题 一定加强结论 D选项 没有加强来自于肉的细菌。E答案属于削弱。C答案无关比较 B答案把两个原因混淆。