12A. understand B. guess

C. hope D. think

答案D

解析乌鸦将羽毛涂成了和鸽子羽毛一样的颜色, 那么鸽子会"认为"乌鸦是同类。

13A. welcomed B. discovered

C. noticed D. attacked

答案A

解析由第四段中的"The crow was so hungry that he got very excited at the food. "可以看出它被鸽子群接受了, 故选A项。

14A. Strangely B. Finally

C. Suddenly D. Interestingly

答案C

解析句意:"突然", 鸽子们发现它是一只乌鸦。

15A. wait　　　B. stop C. cry　　　 D. leave

答案D

解析句意:它们追赶乌鸦, 让它"离开"。

16A. go away B. give up

C. set off D. hurry up

答案A

解析句意:当它的同类看到它的时候也让他"离开"。go away和上文的leave同义。

17A. miss B. like

C. know D. forget

答案C

解析由第五段中的"because of his grey-painted feathers"可知由于它的羽毛颜色没有恢复成原来的样子因而没被它的朋友认出来。故选C项。

18A. colder B. worse

C. busier D. stronger

答案B

解析句意:乌鸦感觉比以前还要"糟糕"。

19A. brothers B. friends

C. parents D. sisters

答案B

解析根据上文的"But when his old friends, the other crows, saw him"可知此空选B项。