单选题 The fundamental reason why people in general do not speak foreign languages very much better than they do is that they fail to grasp the true nature of the problem of learning to pronounce, and consequently never ______ tackling it in the right way.

A、 turn to
B、 insist on
C、 set about
D、 work at

【正确答案】 C

【答案解析】set about“着手，开始”；turn to“求助于”；insist on“坚持要求”；work at“从事，致力于”。