题目

The beach may seem like an inviting place to run on a cool summer morning, but is running on the sand good for your body? It can be, but it’s important to be aware of the challenges that some beach runners experience before you get ready.Running on the beach can be a good thing. It’s certainly different from running on a track or a pavement. For starters, sand can be a challenge because it has an uneven (不平坦的) surface. As you push off, you’re going to lose some of your push as the sand moves. So, you’re not going to be able to push yourself forward as you would on a track or a 100张卡片上分别写有1，2，3，…，100，计算： (1)任取其中1张，这张卡片上写的数是6的倍数的结果有多少种？ (2)任取其中1张，这张卡片上写的数是6的倍数的概率是多少？