比较存在所得税时政府购买对GNP的作用与没有所得税时政府购买对GNP的作用，前者的作用()。
A. 较大
B. 较小
C. 取决于边际消费倾向
D. 不能确定
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Copyright of music may harm the majority of performers in that it
A. in fact protects a few celebrities.
B. covers the creations of most people.
C. forbids the rich as well as the poor.
D. doesn't allow the mass to steal music.
Which of the following does NOT support "work is helpful to health"？
A. Working women are in better health than housewives.
B. People leading a hard life live longer than others.
C. Hardworking people live a longer life.
D. The death rate rises with the unemployment rate.
A．alreadyB．seldomC．neverD．yet
A. already
B. seldom
C. never
D. yet
The first paragraph of the passage is used to ______.
A. remind readers of found photographs
B. advise reader to start a new kind of business
C. ask readers to find photographs behind sofa
D. show readers the value of found photographs
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