Question

_______ he has made a decision, it is not easy for you to make him change his mind.

A．Though

B．Unless

C．Once

D．Until

Answer 1

C

試題分析：Though盡管；Unless除非；Once一旦；Until直到……時。句意：一旦他做了決定，想使他改變主意是很難的。根據句意故選C。
點評：本題難度適中。判斷從句中用哪個連詞，需用記住連詞的用法，在句中的作用，連詞也是高考的熱點，需要考生平時多練習。需要考生會分析句子成分理解句意。
即學即練：I don't know him well _______ I've known him for a long time.
A. Though    B. Unless    C. Once       D. Until
解析：A。句意：我對他并不了解，雖然我認識他已經很長時間了。