单项选择题

A．He was kept in hospital for a long time.
B．He was slightly injured in a traffic accident.
C．He was seriously wounded in a mine explosion.
D．He was fined for speeding.
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单项选择题
B
单项选择题
According to the passage, we need sharks because of the following except ______.
A．they are delicious food for us
B．they are companions of human beings
C．they can help rescue human beings
D．they can help improve human health
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