The results of the experiment with chimpanzees show the possibility to teach animals _____.




A.how to use language freely
B.how to give orders
C.how to obey orders
D.how to understand words and sentences

Psychological experiment indicate that people remember more math problems that they cannot solve than those they are able to solve.




A.experiment
B.cannot solve
C.those
D.to solve

Supposing I ________ to agree to your request, how do think the other students would feel?




A.would
B.am
C.were
D.could

______(40)




A.habit
B.routine
C.manner
D.custom

What does the second paragraph mainly discuss?




A.Many rich people do not belong to the upper class.
B.Today many British people do not like the class system.
C.Many poor people do not consider themselves.
D.An Englishman's social class is determined by many factors.

It's high time we ________________ cutting down the rain forests.




A.stop
B.shall stop
C.stopped
D.must stop

He took _______ golf when he retired from work.




A.over
B.up
C.on
D.after.

The word "prominent" is closest in meaning to_______.




A.dangerous
B.famous
C.picturesque
D.conspicuous

______(65)




A.so that
B.that
C.hen
D.for

What does the author imply about alternative energy sources ?




A.Many different types of alternative energy sources exist.
B.Most alternative energy sources are too impractical for private use.
C.Solar and geothermal energy are the effective forms of alternative power.
D.Alternative energy is too expensive for developing countries to produce.