求解

gdbzyxr

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（adv.逆地，反对地） 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.
(E) When there is a large budget deficit, other events in addition to predictions of slower economic growth sometimes trigger declines in currency value.
这道题的题目怎么理解啊？第二句话，求解

sdcar2010

If it were not for the government's budget deficit, the prediction would not have devalue the dollar.

So the deficit is the necessary condition for the devaluation of the dollar.

Back to the stimulus:
Premises:
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

sdcar2010

As to the concern about whether choice D attacks the premise, the explanation is the following:
D attacks the logic of premise 2, since the deficit is NOT the necessary condition for the devaluation of the dollar if D is right.

gdbzyxr

呃，我水平比较差请问能不能帮我翻译一下 But that prediction would not have adversely（adv.逆地，反对地） affected the dollar had it not been for the government's huge budget deficit, which must therefore be decreased to prevent future currency declines.。中文，麻烦牛牛了

gdbzyxr

谢谢！~

wildmantomba

若非政府的巨额预算赤字，这一预测（指经济放缓的预测）本不应对美元有反向影响（指贬值），因此，必须削减政府预算赤字来避免未来的美元贬值

大概是这个意思