prep1-29

孤独狂欢

To reduce the danger to life and property posed by major earthquakes, scientists have been investigating several techniques for giving advance warning of dangerous earthquakes.  Since catfish swim erratically before earthquakes, some investigators have proposed monitoring catfish to predict dangerous earthquakes.

 

Which of the following, if true, most seriously undermines the usefulness of the proposal?

 

(A) In Japan, which is subject to frequent earthquakes, the behavior of catfish has long been associated with earthquakes.

(B) Mechanical methods for detecting earthquakes have not proved effective.

(C) Tremors lead to the release of hydrogen sulfide gas into water, thereby causing various fish and shellfish to behave erratically.

(D) Careful construction can reduce the dangers posed by earthquakes.

(E) Even very slight, fleeting tremors cause catfish to swim erratically.

E我知道对的。B错在哪里啊？B不是直接指出这个方法无效了吗？不是直接weaken结论吗？

hughlv

观察catfish行为的这种方法不属于mechanical method。我认为B指的是直接检测地震波之类的那种硬科技。如果非的要讨论B与题干的关系，我认为是一种strengthen的关系而不是weaken，正因为mechanical method不成熟，科学家才提出了观察catfish的这种办法。

孤独狂欢

噢~~很有道理，B中的Mechanical methods理解错了

谢谢！