根据听到的内容，回答下题. How many settlements were handed over to the Palestinians？
A. More than 40 settlements.
B. More than 14 settlements.
C. More than 20 settlements.
D. More than 12 settlements.
What is the main topic of the passage？
A. Energy conservation.
B. Transportation of the future.
C. Strip cities.
D. Advantages of air transportation over railroads.
From the passage we can infer that
A. electronic mail will soon play a dominant role in transmitting messages.
B. it will become more difficult for people to keep secrets in an information era.
C. people will spend less time holding meetings or conferences.
D. events will be reported on the spot mainly through satellites.
正确答案是（）
A. source
B. cause
C. movement
D. reason
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