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这一题的思考方式和今天你说的那题类似。
Rabbits were introduced to Numa Island in the nineteenth century. Overgrazing by the enormous population of rabbits now menaces the island's agriculture. The government proposes to reduce the population by using a virus that has caused devastating epidemics in rabbit populations elsewhere. There is, however, a chance that the virus will infect the bilby, an endangered native marsupial. The government's plan, therefore, may serve the interests of agriculture but will clearly increase the threat to native wildlife.
Which of the following, if true, most seriously weakens the argument?
AThere is less chance that the virus will infect domestic animals on Numa than that it will infect bilbies. 分析A选项
BThere are no species of animals on the island that prey on the rabbits. 分析B选项
COvergrazing by rabbits endangers many of the plants on which bilbies feed. 分析C选项
DThe virus that the government proposes to use has been successfully used elsewhere to control populations of rabbits. 分析D选项
EThere is no alternative means of reducing the rabbit population that would involve no threat to the bilby. 分析E选项 |
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