单项选择题

In an automated highway system, all the driver needs to do is ______

A．keep in the right lane
B．wait to arrive at his destination
C．keep in constant touch with the computer center
D．inform the system of his destination by phone
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单项选择题
From the tone of the passage we know that the author is ______
A．doubtful about the necessity of keeping H-bombs at home for safety
B．unhappy with those who vote against the ownership of H-bombs
C．not serious about the private ownership of H-bombs
D．concerned about the spread of nuclear weapons
单项选择题
According to the passage, some people started a national association so as to ______
A．block any legislation to ban the private possession of the bomb
B．coordinate the mass production of the destructive weapon
C．instruct people how to keep the bomb safe at home
D．promote the large-scale sale of this newly invented weapon
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