China's high-speed railways from 9，000 to 25，000 kilometers in the past few years．（　?。?/h1>

A．are growing	B．have grown
C．will grow	D．had grown

【答案】B

【解答】

【點評】

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A．will be increasing	B．has increased
C．were increasing	D．have increased

A．were made	B．have made
C．are made	D．have been made

China's high-speed railways from 9，000 to 25，000 kilometers in the past few years．（ ?。?/h1>