单项选择题

Which of the following best states the main idea of the passage

A．Change in the French way of life.
B．Criticism of the new life style.
C．The Americanization of France.
D．Features of the new way of life.
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单项选择题
Which of the following is not true about the silicon chip
A．It has appeared since 1960.
B．It is an electronic brain and can store a lot of information.
C．It is a chip of silicon crystal and is very small.
D．It becomes cleverer and more expensive every year.
单项选择题
In the ancient days, human beings needed to use tools because______.
A．Human beings didn't have sharp teeth like other meat-eating animals and tools helped them to get food more easily.
B．Tools helped to develop human intelligence.
C．Tools helped the human beings to cut meat and skin from dead animals.
D．It was easy to make stone tools.
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