单项选择题

A．How to deal with Americans.
B．The cultural heritage of Americans.
C．How to do business with Americans.
D．How to travel to America.
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单项选择题
A．It has a beautiful scenery.B．The lions there are all locked.C．The monkeys there are very entertaining.D．It is in a very remote place with wild animals.
A．It has a beautiful scenery.
B．The lions there are all locked.
C．The monkeys there are very entertaining.
D．It is in a very remote place with wild animals.
单项选择题
What does the author suggest by referring to the lesson of personal computers
A．GM food will ultimately enter into the diet of commons.
B．GM food is similar to personal computers in some aspects.
C．Like personal computers, GM food will become indispensable to people.
D．GM food is one of the achievements of high technology.
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