单项选择题

According to the passage, studies on the results of copyright protection ______.

A．lag behind the research in other fields,
B．need to be done in a practical way.
C．should be carried out immediately.
D．will promote cultural innovation.
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单项选择题
Which of the following statements about intellectual property is NOT true
A．Countries may differ in their efforts to protect it.
B．The author considers its protection well-grounded.
C．People believe its protection may benefit creators.
D．The history of its protection has not been long.
单项选择题
It can be inferred from the fourth paragraph that ______.
A．American youth have fewer choices but to go to elite schools.
B．the competition for elite schools is fiercer in the United States.
C．the parents should not put too much pressure on their children.
D．the children's future will be bleak without going to elite schools.
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