根据短文内容判断正误，正确的在括号里填A， 错误的在括号里填B。

A man has a parrot (鹦鹉). It’s blue and green. It can speak like a man. Every morning, the man wants to talk with it. But the parrot never says any words to him. One morning, the man says something to the parrot, but the parrot doesn’t say anything. The man is angry (生气) with it. He doesn’t give it any food or water. The next morning, the man goes and sees the parrot. He says something to it. But the parrot still (仍然) doesn’t speak. At last , the man says , “ Fool (笨蛋)！You are a fool.” After that he hears the same words from the parrot. Then he loves it very much. It’s a clever parrot.

小题1:The parrot is white and blue. 

小题2:The parrot talks to the man every day.  

小题3:The man doesn’t give the parrot food or water when it doesn’t speak.

小题4:The parrot is really a fool.  

小题5:At last, the parrot says the same words as the man says.

什么叫自然循环锅炉？