問題詳情

三、綜合測驗：     Dogs are said to have the same ancestor ___31___ wolves.　Since dogs were domesticated thousands of years ago, they ___32___ good friends and helpers of human beings.　They may keep people company, watch their houses, and have even been trained to work for them.　For example, some dogs may detect the scent of drugs ___33___ their sharp sense of smell.　Others, such as guide dogs, are inseparable partners of the blind.　A guide dog is to a blind person ___34___ eyes are to normal people.　Thus, dogs are definitely the animals ___35___ are people’s best friends.
31.
(A) with　
(B) as　
(C) from　
(D) by

參考答案

答案：[無官方正解]
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)

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