41. What is the passage mainly about?

　　 A. It was difficult for ancient people to travel between Polynesia and South America.

　　 B. The first people who lived in Chile and Polynesia.

　　 C. Valuable chicken bones have been found in Chile.

　　 D. Chickens -- the first to travel between Polynesia and South America.

39．neither, neither…nor…是固定结构，表“既不……也不……；两者都不……”

38．be taken，由该句中的by可知，此处考查动词的被动语态。

37．in，介词，in sigh language "用手势语”，表方式：

36．Would，Would you please／kindly do sth? 表客气婉转的请求。

35．hear，and连接两个动词不定式to speak和(to)hear。

34．when，考查be doing sth when．．．／be aboutto do sth．when…．的结构，表“正在／即将　 去做……突然／就在那时……”。

33．However，表转折，“然而，可是”。

32．it, 代词，代替前文提到的聋哑人聚在一起乞讨这回事。