单项选择题

A．In order to elevate their nests.
B．In order to live more comfortably.
C．In order to avoid predators.
D．In order to make incubation easier.
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单项选择题
A．Teachers like Professor Johnson are rare.B．Professor Johnson has won a million dollars.C．Professor Johnson is likely to be teaching at that school.D．There are many teachers as good as Professor Johnson.
A．Teachers like Professor Johnson are rare.
B．Professor Johnson has won a million dollars.
C．Professor Johnson is likely to be teaching at that school.
D．There are many teachers as good as Professor Johnson.
单项选择题
A．She can help the man.B．The servant need some help.C．The complaint will be helpful.D．The complaint won’t really do any good.
A．She can help the man.
B．The servant need some help.
C．The complaint will be helpful.
D．The complaint won’t really do any good.
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