单项选择题

A．Tracking the grizzly bears’ course without interfering them.
B．Being very light.
C．Being handy.
D．Tracking the grizzly bears easily.
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单项选择题
A．To prepare material for the class.B．To do a research of this kind of bear.C．To prevent them from becoming extinct.D．To discover where the bears go.
A．To prepare material for the class.
B．To do a research of this kind of bear.
C．To prevent them from becoming extinct.
D．To discover where the bears go.
单项选择题
A．The Indian tiger and American eagle are important.B．None of the great sea fisheries are to be exhausted.C．Fish supply has no effects on people.D．Sea resources are important to people.
A．The Indian tiger and American eagle are important.
B．None of the great sea fisheries are to be exhausted.
C．Fish supply has no effects on people.
D．Sea resources are important to people.
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