单项选择题

A．organizations
B．organisms
C．humans
D．children
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单项选择题
A．Try a new ribbon.B．Help her type the paper.C．Get another typewriter.D．Change the paper.
A．Try a new ribbon.
B．Help her type the paper.
C．Get another typewriter.
D．Change the paper.
单项选择题
A．confirmB．informC．claimD．convince
A．confirm
B．inform
C．claim
D．convince
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