单项选择题

From paragraph 4, we can deduce that_____.

A．the speed of computers is faster than ever
B．scientists encounter unprecedented difficulties
C．the intelligence of computers is more important than the speed
D．there is much room for the improvement of computer intelligence
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单项选择题
When the author says that it' s not crazy to think about the impact of this on evolution, he means_____.
A．the progress in biography is so great that people feel astonished
B．the progress in cryogenics is so great that people feel astonished
C．the progress in information technology has great influence on human
D．the progress in information technology is beneficial to human
单项选择题
In the passage, the author wants to tell us_____.
A．That people dreamed of leaving their home planet and exploring other worlds became reality.
B．After the Apollo program, the emphasis in piloted missions shifted to short-duration spaceflight.
C．Space exploration is a great challenge to human beings and will be achieved through generation's work.
D．Today efforts focus on keeping people healthy during space missions and in increasing the cost of sending satellites into orbit.
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