字神帝國英語天地

Tiger sharks are common in the waters surrounding Tenare Island. Usually tiger sharks feed on smaller sharks, but sometimes they have attacked tourists swimming and surfing at Tenare's beaches. 
This has hurt Tenare's tourism industry, which is second only to its fishing industry in annual revenues. 
In order to help the economy, therefore, the mayor of the island has proposed an ongoing program to kill any tiger sharks within a mile of the beaches.
Which of the following, if true, most strongly calls into question the likelihood that implementation of the 
mayor's proposal will have the desired consequence?

(A) Even if not all the tiger sharks that come close to the beaches are killed, the existence of the program
would reassure tourists.
(B) Business owners who depend on tourism are willing to pay most of the cost of implementing the program.
(C) Tourists come to Tenare Island for its beaches, even though the island features a number of other
tourist attractions.
(D) The small sharks on which tiger sharks prey feed on fish that are commercially important
to the island's fisheries.
(E) Not all tourists who come to Tenare Island enjoy swimming or surfing.
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一地的經濟主要來源於漁業和旅遊業，但鯊魚影響旅遊業，因此市長下令捕殺鯊魚，以振興經濟。問削弱。注意要從方向和相關性上考慮。
A.選項論述是好事，算加強。
B.選項論述是好事，算加強。
C.也是好事，無法削弱。
D.認為撲殺鯊魚對旅遊業有好處，但是對漁業不利，削弱。
E.只有一部分遊客要下水，但這也是支持市長的決定，無法削弱。

答案選D。