单项选择题

A．He was smoking a pipe.
B．He was learning to smoke.
C．He was studying a tobacco plant.
D．He was throwing tobacco leaves on a fire.
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单项选择题
A．A bank is closed for one or more days.B．Too many clients try to draw out their money at one time.C．There is not enough money to pay all its clients at one time.D．Tellers of a bank take their own money from the bank.
A．A bank is closed for one or more days.
B．Too many clients try to draw out their money at one time.
C．There is not enough money to pay all its clients at one time.
D．Tellers of a bank take their own money from the bank.
单项选择题
A．To study animal behavior in the wild.B．To increase the public’s understanding of endangered species.C．To prepare endangered species for life in the wild.D．To breed animals to sell to zoos.
A．To study animal behavior in the wild.
B．To increase the public’s understanding of endangered species.
C．To prepare endangered species for life in the wild.
D．To breed animals to sell to zoos.
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