29. (31650-!-item-!-188;#058&004636)
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.
有支持的意味
(B) Mechanical methods for detecting earthquakes have not proved effective. 有效性無關於此
(C) Tremors lead to the release of hydrogen sulfide gas into water, thereby causing various fish and shellfish to behave erratically.
有更多因子可以支持, 不能推翻
(D) Careful construction can reduce the dangers posed by earthquakes. 建築與此無關
(E) Even very slight, fleeting tremors cause catfish to swim erratically. 要偵測重大傷害的地震, 可是連小地震都會影響鯰魚, 那就不知道到底要不要疏散了. 天天都有餘震, 那不就要勞民傷財天天搞撤離家園