问题补充：
If you are not sure how to use the words, you may the words in your handout.
A. pick up
B. deal with
C. refer to
D. look up
答案：
A. pick up
B. deal with
C. refer to
(答案→)D. look up
解析：动词短语pick up捡起；（尤指偶然地、无意地、不费劲地）得到；学会；B处理，对付；C提及谈及，参考，查阅；D查找；表示“查字典”要使用refer to the dictionary,或look up the word in the dictionary。句义：如果你不知道如何使用这些单词，你可以在你的讲义里查找这些词。根据句义说明D正确。
