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Feifei-91 again

91. Leachate is a solution, frequently highly contaminated, that develops when water permeates a landifill’s site. If and only if the landfill’s capacity to hold liquids is exceeded does the leachate escape into the environment, generally in unpredictable queantities. A method must be found for disposing of leachate. Most landfill leachate is sent directly to sewage treatment plants, but not all sewage plants are capable of handling the highly contaminated water.

Which one of the following can be inferred from the passage?

(A) The ability to predict the volume of escaping landfill leachate would help solve the disposal problem.

(B) If any water permeates a landfill, leachate will escape into the environment.

(C) No sewage treatment plants are capable of handling leachate.

(D) Some landfill leachate is sent to sewage treatment plants that are incapable of handling it.

(E) If leachate does not escape from a landfill into the environment, then the landfill’s capacity to hold liquids has not been exceeded.

(E) is provided as the right answer. I don't understand why (D) is wrong. If most leachate is sent to sewage treament plants, but not all sewage plants are capable of handling the water => some leachate must have been sent to plants that can't handle it.

Xie Xie a lot!!!!!

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逆否命题。题目不难,但费费逻辑里把sewage treatment plants翻成可被污水灌溉的植物。。。汗啊

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原文只说多数L被送去处理厂。不是所有处理厂能处理高污染水。没说就会送去这些不会处理L的厂

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many thanks !!!!!!!!!!

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原文并没说L会送去不能处理它的处理厂。完全有可能送L的人将L送去处理厂之前已知道那些厂能处理L,然后才将L送去该厂。ANYWAY,原文没这方面的信息,所以D推不出。错

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