专八interview,选自《星火英语2013专八满分听力》第三专题
How much water should cyclists take in case of hot weather? In fact, if it is a really hot day,like the sort of weather we had last summer,you are advised to drink at least one liter of water every hour. That is quite a lot of water. Are there any other things you have to prepare in summer? Well, you have to protect yourself against sunshine. Sun cream is essential in hot weather because you can very easily get sun burned without even realizing it. When you buy sun cream,make sure that it contains a high index of SPF and PA. SPF can resist UVB,which results in melanin. You know, the thing that will cause the blackening of your complexion. And PA can resist UVA, which results in wrinkles and slack skin. So the ideal sun cream used for cycling tours in summer should contain SPF30 and PA three plus.