We cannot clean up all the polluted seas and rivers. Nor we can stop the disappearance of plants and animals.




A.cannot
B.all
C.we can
D.disappearance

He started computer programming as soon as he left school.




A.No sooner had he started computer programming than he left school.
B.Hardly had he started computer programming when he left school.
C.No sooner had he left school than he started computer programming.
D.After he left school, he had started computer programming.

I / strong / advise / you / take part / volunteer works /




A.I am strong advise that you should take part in volunteer works
B.I stronlyg advise that you might take part for volunteer works
C.I strongly advise that you should take part in volunteer works
D.I am strong in advising you to take part in volunteer works

George Stephenson , an English engineer , ____ to haul coal from mines.




A.traveling engine that he constructed
B.constructed a traveling engine
C.which was constructed in a traveling engine
D.he was constructed in a traveling engine

In a “primary succession”, what makes it possible for mosses to take root?




A.The effect of lichens.
B.The amount of sunlight.
C.The amount of moisture.
D.The type of rock.

What conditions are needed for shrubs to become established?




A.More soil must accumulate.
B.The ground must be covered with grass.
C.Smaller plants must die now.
D.Ferns must take root.

According to the passage, “streaming pupils” _____.




A.is the act of putting pupils into classes according to their academic abilities
B.aims at enriching both their knowledge and experience
C.is quite discouraging
D.will help the pupils learn best

According to the passage, which of the following is an advantage of mixed-ability teaching?




A.Formal class teaching is the important way to give the pupils essential skills such as those to be used in the library.
B.Pupils can be hindered from an all-round development.
C.Pupils as individuals always have the opportunities to work on their own.
D.A pupil can be at the bottom of a class.

________________ (53)




A.thrown away
B.torn off
C.put aside
D.recycled

A.omission
B.advertisement
C.recommendation
D.accomplishment