問題詳情

▲閱讀下文，回答第 46-50 題Dogs and cats should never be permitted to eat chocolate, because chocolate works like apoison in their bodies. Chocolate contains a chemical called theobromine, which is similar tocaffeine. Human bodies are able to process the theobromine without any ill side effects, butdogs and cats cannot.Different types of chocolate contain different amounts of theobromine. It would take 20ounces of milk chocolate to kill a 20-pound dog, but only two ounces of baker's chocolate or sixounces of semi-sweet chocolate. The amounts, of course, are much smaller for a cat, whosebody weight is typically less than that of a dog.Most cats are not naturally attracted to eating chocolate, but many dogs are. Dogs bynature will sample nearly anything that they see their masters eating, so pet owners must takecare to keep all chocolate products well out of reach of their dogs and cats.
46. According to the passage, why is chocolate poisonous for dogs and cats?
(A) It contains caffeine.
(B) It gets stuck in their intestines.
(C) They cannot process theobromine.
(D) Chocolate is made from processed cocoa.

參考答案

答案：C
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)

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