单项选择题

It is necessary that an efficient worker _______ his work on time.

A．accomplishes
B．can accomplish
C．accomplish
D．has accomplished
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单项选择题
Dogs are often praised for their _______; they almost never abandon their masters.
A．truthfulness
B．loyalty
C．trust
D．faith
单项选择题
China started its space industry only in recent years, and should _______ no lime in catching up.
A．delay
B．lag
C．lessen
D．lose
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