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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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
What seems confusing and fragmented at first might well become _______ a third time.
A．notable and systematic
B．clear and organic
C．clean and measurable
D．pure and wholesome
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