2019年mpacc考试英语真题——介词和介词短语156

{01}Once in bed,I read for twenty minutes and then _______ the light
A.turned out
B.turned over
C.turned on
D.turned up
解析：turn out“关掉(灯或热源),熄灭”；turn over“翻身，翻转”；turn on“开灯”；turn up“露面”。
本题选A。
{02}A working party(工作组) has been set up to ________ the problem
A.look through
B.look up
C.look into
D.look out
解析：：短语辨析。A仔细检查；B查找；C调查；D当心；句意：一个工作组已经被成立来调查这个问题。根据句意说明C正确。
本题选C。