单项选择题

According to the author, one of the driving forces behind M＆A wave is ______.

A．the greater customer demands
B．a surplus supply for the market
C．a growing productivity
D．the increase of the world's wealth
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单项选择题
The purpose of this passage may be _______.
A．to urge schools to return to an earlier form of education
B．to help scientists regain power
C．to provide education for the intellectual only
D．to argue for a change in curriculum
单项选择题
Apples are used _______.
A．in order to convince the reader that fruit has no intellect
B．to illustrate the subject of the passage
C．to give color to the story
D．to show how foolish logic is
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