单项选择题


A．section
B．number
C．part
D．quantity
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单项选择题
A．lead toB．causeC．produceD．reach
A．lead to
B．cause
C．produce
D．reach
单项选择题
What can be concluded when the current tide of knowledge revolution ebbs
A．Productivity will rise.
B．Productivity will receive no impact.
C．Population growth will slow down.
D．Population growth will become accelerate
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