单项选择题

A．He once had a job in a zoo.
B．They’re familiar examples of endangered species.
C．He’s interested in the genetics of mammals.
D．They also become attached to humans.
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单项选择题
A．The barbecue has been canceled.B．The weather will probably be cool.C．The man will not be able to attend the barbecue.D．Casual dress will be appropriate.
A．The barbecue has been canceled.
B．The weather will probably be cool.
C．The man will not be able to attend the barbecue.
D．Casual dress will be appropriate.
单项选择题
A．Buy a used bicycle.B．Buy a racing bicycle.C．Replace the tires on his bicycle.D．Sell his old bicycle to the shop.
A．Buy a used bicycle.
B．Buy a racing bicycle.
C．Replace the tires on his bicycle.
D．Sell his old bicycle to the shop.
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