______ you don't konw the meaning of a new word,you can look it up in a dictionary.
A.Though B.Because C.As D.If
我怎么感觉这题A和D都可以选啊,选A时表示“即使你不明白一个新单词的意思,你也可以去查字典”,但又总觉得怪怪的,希望大家说说解题思路