题文
China is going to________a manned space station around 2020 to explore more space．
| A．set up |
| B．put up |
| C．wake up |
| D．turn up |
China is going to________a manned space station around 2020 to explore more space．
| A．set up |
| B．put up |
| C．wake up |
| D．turn up |
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