题目内容：

Washoe is a young chimpanzee (黑猩猩). She is no     chimpanzee, though. Scientists are doing a research     her. They want to see how civilized (驯化) she can     . Already she does many things a human being can do.

For example, she has been learning how to exchange     with people. The scientists are teaching her     language. When she wants to be picked     , Washoe points up with one finger. She rubs (擦) her teeth with her finger       she wants to brush her teeth. This is done after every meal.

Washoe has also been        to think out and find answers to problems. Once she was put in a     with food hanging from the ceiling (天花板). It was too high to     . After she considered the     , she got a tall box to stand      . The food was still too high to be reached. Washoe found a     pole (杆子). Then she climbed onto the     , grasped the pole, and      down the food with the pole.

Washoe     like a human, too. The scientists keep her in a fully-furnished (家具齐全的) house. After a hard     in the laboratory, she goes home.     she plays with her toys. She    enjoys watching television before going to bed.

Scientists hope to     more about people by studying our closest relative (亲属) — chimpanzee.

1.A．foolish      B．ordinary   C．special   D．simple

2.A．for        B．by    C．to    D．on

3.A．experience      B．change   C．develop   D．become

4.A．actions       B．views   C．messages   D．feelings

5.A．sign       B．human   C．spoken   D．foreign

6.A．out         B．at    C．on    D．up

7.A．when       B．until    C．since    D．while

8.A．raised       B．trained   C．ordered   D．led

9.A．cave    B．zoo    C．room    D．museum

10.A．pull    B．see    C．eat    D．reach

11.A．problem   B．position   C．food    D．ceiling

12.A．by      B．on    C．up    D．with

13.A．straight     B．strong   C．long    D．big

14.A．wall    B．box    C．ceiling   D．pole

15.A．knocked   B．picked   C．took    D．shook

16.A．lives    B．acts    C．thinks   D．plays

17.A．task    B．lesson   C．day    D．time

18.A．Here    B．There    C．So    D．Then

19.A．quite    B．already   C．even    D．still

20.A．watch     B．pick    C．gain    D．learn