单项选择题

There have been UFO reports for ______.

A．15 years
B．50 years
C．six decades
D．four decades
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单项选择题
Why would a terrorist go to the Atomic Energy commission’s public reading room
A．To find nut how to design a bomb.
B．To find out where to steal plutonium.
C．To look at files of secret information.
D．To find out where to stem an atomic bomb.
单项选择题
The news from China tells us that ______.
A．at least eighty-one people have been killed by flooding
B．a dangerous goods warehouse has been damaged by fire
C．many killed were unable to leave the building
D．the fire in a handicraft factory in southern China is striking
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