[单项选择]Once the ______ contradiction is grasped, all problems will be readily solved.
A. principle
B. principal
C. potential
D. primitive

[单项选择]Once the ______ contradiction is grasped, all problems will be readily solved.
A. principle
B. principal
C. potential
D. primitive

[单项选择]once the ______ contradiction is grasped, all problems will be readily solved.
A. principle
B. principal
C. potential
D. primitive

[单项选择]Electronic equipment causes all the following problems except that______.

[单项选择]He lacked the strength to deal with all these problems.
A. think of
B. talk about
C. copy down
D. cope with

[单项选择]Once all the major companies in the car industry had become as efficient as possible,
A. they turned to use economies of scales as the main way of reducing cost.
B. there came increased productive capacity.
C. there was no way to reduce cost.
D. the main fear in the car industry became over-capacity.

[单项选择]A good scientist ______ into all aspects of a problem in order to find solutions.


A. pricks
B. pokes
C. probes
D. peers

[单项选择]

Passage Four
There was once a man who spent all his time in his glasshouse. Flowers was his name, and flowers were his main joy in life. He grew flowers of every color under the sun. He grew these flowers in order to enter them for competition. His greatest hope in life was to grow a rose of an entirely new color that would win him the silver cup for the Rose of the Year.
Mr. Flowers’ glasshouse was close to a public path, which was always used by children walking to and from school. Boys were often attracted to throw a stone or two at his glasshouse. So Mr. Flowers did his best to be in or close by his glasshouse at the beginning and end of the school day.
However, it was not convenient or possible to be on guard all the time. Mr. Flowers had tried in many ways to prevent harm to his glass; but nothing that he had done had been successful.
Then, just as he was giving up hope of ever winning the battle, and of growing the Rose of the Y
A. to grow beautiful flowers
B. to grow the Rose of the Year and win a prize
C. to grow all kinds of flowers in the world
D. to take part in the competition