单项选择题

By referring to Sam' s broken bicycle, the author intends to_____.

A．illustrate the ways to repair his bicycle
B．discuss the problems of his bicycle
C．tell us how to solve a problem
D．show us how to analyses a problem

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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

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