单项选择题

Biotechnology enables us ______.

A．to change the DNA of human beings
B．to produce more milk by increasing the number of cows
C．to increase the functions of various cells and organisms
D．to find new human molecules

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热门试题

单项选择题

IBM's Deep Blue is ______.

A．a robot
B．a chess master
C．a programmed chess rival
D．a computer designer

单项选择题

According to chaos theory ______.

A．order is often created on the basis of disorder
B．there is hardly any order in the vast universe
C．creative people always have messy desk
D．there will be a breakdown of order on our plane