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A．To warn of dangers.
B．To explain traffic regulations.
C．To wake up drivers who are falling asleep.
D．To give directions.
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单项选择题A．Alice is now in a very bad temper.B．Alice is now preparing for the test.C．Alice is now very happy.D．Alice is now ill.

A．Alice is now in a very bad temper.
B．Alice is now preparing for the test.
C．Alice is now very happy.
D．Alice is now ill.

单项选择题A．Something in the Bermuda Triangle is strange.B．Where the Bermuda Triangle is.C．On very little about this.D．Ships were not lost.

A．Something in the Bermuda Triangle is strange.
B．Where the Bermuda Triangle is.
C．On very little about this.
D．Ships were not lost.

单项选择题A．A bomb explosion.B．A traffic accident.C．Murder.D．Massaccres.

A．A bomb explosion.
B．A traffic accident.
C．Murder.
D．Massaccres.

单项选择题A．An English reporter.B．An American reporter.C．An English scientist.D．An American scientist.

A．An English reporter.
B．An American reporter.
C．An English scientist.
D．An American scientist.

单项选择题A．From a newspaper advertisement.B．From a magazine article.C．From a television program.D．From an automobile dealer.

A．From a newspaper advertisement.
B．From a magazine article.
C．From a television program.
D．From an automobile dealer.