Have you heard of the new great four inventions in China ? So you see, they are the new great four inventions in China, namely, Alipay, ____________ , shared bikes and online shopping. 你听说过中国的新四大发明吗? 所以你看，它们是中国新的四大发明，即支付宝，____________，共享单车和网上购物。
A、exclusive passenger railway 客运专线
B、high-speed railway 高速铁路
C、wechat微信