单项选择题

When things far away seem indistinct, one is probably ______.

A．near-sighted
B．far-sighted
C．astigmatic
D．suffering front cataracts
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单项选择题
The best solution to the problem of the spread of bird flu is ______.
A．to kill all the birds in an area where bird flu has been discovered
B．to kill all the chickens
C．to kill all the birds
D．to kill all the chickens when bird flu has been discovered
单项选择题
H-live-n-one virus in the passage means ______.
A．farm birds
B．infected farm animals
C．people died in Hong Kong
D．a different kind of bird flu virus
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