单项选择题

If we want to feed the world's population in 2050, our food production needs ______.

A．to increase by 30 percent
B．an increase of 300 percent
C．to increase to 3 billion tons per year
D．an increase of three times
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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.
单项选择题
According to the passage, GM food will ______.
A．make the world's population drop
B．change people's ways of purchasing clothes
C．win acceptance when people realize they need fewer pesticides
D．eliminate the scarcity of food
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