问题
选择题
Was it in the train “ Harmony”, ______ is China’s first high-speed one, that John met with his foreign friend？
A．which
B．that
C．what
D．where
答案
答案：A
本题考查定语从句。先行词为the train “ Harmony”在定语从句中作主语，由于是非限定性定语从句，故只能用which。