It’s reported that at least 500 million people are using WeChat(微信) in China．
| A．50.000 | B．500，000 |
| C．500，000，000 | D．5，000 |
It’s reported that at least 500 million people are using WeChat(微信) in China．
| A．50.000 | B．500，000 |
| C．500，000，000 | D．5，000 |
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