单项选择题

A．It is pleasant.
B．It is constant.
C．It is always windy.
D．It is changeable.
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单项选择题
What will radar warning systems do for drivers according to the conversation
A．They will tell drivers the accident on the road ahead.
B．They will remind drivers if there is only a little oil left.
C．They will help drivers sheer off in the opposite direction.
D．They will give an alarm if drivers get too close to other cars.
单项选择题
What do we learn about the brain of robots
A．It can store many instructions.
B．It can perform few tasks.
C．It is a symbol of modernization.
D．It is as clever as human brain.
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