第二招：异项优先原则

当选项中出现有意思明显相反的两项时，那么正确答案必在此二项中出现！如果出现双重异项，那么即可判断出正确答案，异项优先原则在六级考试听力短对话中应用广泛！ 

典型例题： 1999年12月第6题 

6. A) She can’t finish her assignment, either. 

B) She can’t afford a computer right now. 

C) The man can use her computer. 

D) The man should buy a computer right away. 

例题分析：B、C异项，B项的意思是她现在有电脑，C项的意思则是她现在没有电脑。B、D异项，B是说女方无电脑，而D是说男方无电脑，男女也是一种反意关系。所以根据双重异项原则可确定正确答案为B项！ 

本题听力原文： 

6. M: I'm frustrated. We're supposed to do our assignment on the computer, but I have difficulty getting access to the computers in the library. 

W: I understand the way you feel. I'm looking forward to the day when I can afford to get my own. 

Q: What does the woman mean?