单项选择题

What is the best title for this passage

A．Six Stages for Repairing Sam's Bicycle.
B．Possible Ways to Problem-solving.
C．Necessities of Problem Analysis.
D．Suggestions for Analyzing a Problem.

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单项选择题As used in the last sentence, the phrase in short means_____.

A．in the long run
B．in detail
C．in a word
D．in the end

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

单项选择题The author's attitude towards intelligent seem to be that_____.

A．opposition
B．approval
C．suspicion
D．indifference

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What are the challenges of space exploration

A．The challenge was developing rockets powerful enough and reliable enough to boost a satellite into orbit.
B．The challenge was building the satellites themselves.
C．Engineers also had to build tracking stations to maintain radio communications with these artificial "moons" as they circled the planet.
D．The development of rockets and satellites.