12. A) Summer has become hotter in recent years.
B) It will cool down a bit over the weekend.
C) Swimming in a pool has a relaxing effect.
D) He hopes the weather forecast is accurate.
答案：
12. B) It will cool down over the weekend.
原文：
12. W: These summer days are getting to be more than I can take. It was even too hot to go to the pool yesterday.
M: Hang in there. According to the weather report we should have some relief by the end of the week.
Q: What does the man mean?