You’d better not always look up the new words the dictionary while reading. Sometimes we

You’d better not always look up the new words the dictionary while reading. Sometimes we need to guess.
A. in
B. on
C. at
D. from

(答案→)A. in B. on C. atD. from解析：考查介词的用法。句意“在阅读时，你最好不要总是在字典里查生词。有时我们需要猜测。”look up...in the dictionary“在字典里查找”。故选A。

回答的不错