China _______________a high-speed railway network covering almost all its cities with a population of of more than 500，000 by 2015．
| A．is setting up | B．will set up |
| C．has set up | D．will have set up |
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China _______________a high-speed railway network covering almost all its cities with a population of of more than 500，000 by 2015．
| A．is setting up | B．will set up |
| C．has set up | D．will have set up |
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