单项选择题

What do we learn from the conversation

A．The woman knows the professor has been busy.
B．The woman knows the professor has run into trouble.
C．The woman has trouble getting along with the professor.
D．The woman regrets having taken up much of the professor’s time.

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单项选择题A．bothB．not onlyC．as well asD．neither

A．both
B．not only
C．as well as
D．neither

单项选择题It can be inferred from this passage that automobiles ______.

A．are an important part of the world’s economy
B．are becoming less dangerous
C．will produce less air pollution in the future
D．are killing more people in recent years than in the past

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What do we learn from the conversation