30.  If you listen to me, you _____ have some candies, honey.

A. shall        B. may        C. will        D. must

 (1)

Naturalists have long known that the apes, our nearest relative in the animal          1.______

kingdom, communicate with one and another through gestures, sounds and facial      2.______

expressions. But it was always thought that only human beings can use words         3.______

and sentences. In the 1960s, however, researchers set themselves the task of reach     4.______

chimpanzees to communicate with humans. At first the scientists tried make them      5.______

to speak. But no chimp ever managed to acquire a vocabulary of more than four words 6.______

and even these were spoken with great difficult. The breakthrough came when two    7.______

scientists from the University of Nevada decided to try America Sign Language,      8.______

system of gestures used by deaf people. After four years, they had taught their first    9.______

chimps to use 132 signs correctly to communicate their wants and needs.           10.______

 (2)

A few months after returning the US from Germany, I took                        1._______

part in a college course in French. Since I have learned                            2._______

to say German well in Germany, I thought it might be                             3._______

interested to begin studying another language. At the                             4._______

first class, the teacher asked us to do a pronunciation                              5._______

exercise in it he would say a word or two in French, and                           6._______

each student would do their best to copy. When he got to                          7._______

me, he kept having me to say more words, and I                                 8._______

finally asked him why. “I find it great fun,” she explained                          9._______

it. “In 25 years of teaching at school, it’s the first time                             10._______

I’ve heard an American speak French with a German accent.”

练习三

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