单项选择题

Terrorists have obviously taken advantage of______.

A．the legal privileges granted to foreigners.
B．the excessive hospitality of the American people.
C．the irresponsibility of the officials at border checkpoints.
D．the low efficiency of the Immigration and Naturalization Service.

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热门试题

单项选择题

It can be inferred from the passage that before Sept. 11, aliens with expired visas ______.

A．might have them extended without trouble.
B．would be closely watched by FBI agents.
C．might stay on for as long as they wished.
D．would live in constant fear of deportation.

单项选择题

Before Sept 11, the U.S. Congress had been unable to pass stricter immigration laws be- cause______.

A．they might have kept away foreign students and cheap labor.
B．it was difficult to coordinate the efforts of the congressmen.
C．education and business circles cared little about nation.
D．resources were not available for their enforcement.