单项选择题

The warning given by Frank Church is ______.

A．indirect but enthusiastic
B．direct but passionate
C．ambiguous but calm
D．definite but indifferent
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单项选择题
It can be inferred that ______.
A．man will eventually be controlled by machines
B．machines will eventually be controlled by man
C．man is sometimes deceived by machines
D．machines often rush into human brains
单项选择题
Which of the following does NOT present a true picture of American blacks
A．Few blacks live in the northern parts of the United States.
B．They practise their own religion.
C．They are apt to be engaged in competition with other American citizens.
D．They are culturally and geographically homogeneous.
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