问题
选择题
They always communicated with each other on the Internet, but they never met him _______.
A．back to back
B．heart to heart
C．face to face
D．side to side
答案
答案：C
短语辨析。back to back背靠背，连续； heart to heart率直的，诚实的； face to face 面对面的，对立的 ；side to side 边对边。句意：他们总是在互联网上相互沟通，但是他们从来没有面对面见过。故选C。