_____________literally means “High Speed Trains”. They are the fastest and also the most popular in China, with a maximum speed of 350 km/h. _____________ 字面意思是“高速列车”。它们是中国最快的，也是最受欢迎的，最高时速为350公里。
A、G-Trains
B、T-Trains
C、K-Trains