问题
选择题
It’s reported that a UFO stopped over a mountain village for a while and then disappeared in the direction ______ it had come.
A．in which
B．from which
C．of which
D．by which
答案
答案：B
题目分析：考查定语从句，先行词是the direction，定语从句中come后面缺少介词from，句意：据报道，一个不明飞行物在一个山村上方停了一会，然后消失在来的方向。选B。
点评：考查定语从句一要看先行词，而要看从句的成分，如果缺少主宾表，要用that或which如果缺少状语，要用关系副词where，when或why。定语从句中缺少介词，要用介词+whom/which。