13. W: Professor Smith, I really need the credit to graduate this summer.
M: Here at this school the credits are earned, not given.
Q: What do we learn from the conversation?
解析：C。根据女士所说的“我真的很需要这个学分才能在这个暑假毕业”，可知她乞求老师让她通过考试，答案为C。B只是用earn一词作为干扰，不难排除。

14. M: How did you go to Canada, Jane? Did you fly?
W: I was planning to because such a long trip by bus or by train, but Fred decided to drive and invited me to join him. It took us two days and a night.
Q: What can we infer from the conversation?
解析：C。女士原本打算坐飞机，但Fred决定开车去，并邀请Jane一起上路，可推断Jane改变了注意。答案为C。