I often the words I don’ t know in the dictionary or on the Internet.
A. look up
B. look at
C. look for
D. look into
网友回答
(答案→)A. look up
B. look at
C. look for
D. look into
解析：考查动词短语辨析。句意为“我经常在字典里或网上查我所不懂的单词。”look up查（单词、电话号码等）；look at看，注视(某人或某物)；look for寻找；look into向里看，研究，调查。