单项选择题

Jack is a diligent worker.

A．ambitious
B．lazy
C．hardworking
D．clever
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单项选择题
A rescue platform called the Eagle is capable of moving vertically but not sideways.
A． Right
B． Wrong
C． Not mentioned
单项选择题
The four propellers are fitted horizontally to the Eagle.
A． Right
B． Wrong
C． Not mentioned
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