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.
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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.
单项选择题
A．Leave New York to minorities.B．Go after success when they visit the museums.C．Give financial help to the museums.D．Go to the museums every day.
A．Leave New York to minorities.
B．Go after success when they visit the museums.
C．Give financial help to the museums.
D．Go to the museums every day.
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