Unit 117：Make good choices第117单元：做正确的选择The key to keeping up a regular program of exercise is to choose activities that you like.持续落实有规律的运动计划之关键是要选对你喜欢的运动。If you can't swim.don't jump into the pool.如果你不会游泳，就别跳进游泳池里。If the only thing about jogging that you like is stopping，hang up your running shoes.假如对于慢跑你唯一喜欢的一点是不要跑.那就将你的慢跑鞋放起来吧。And if you enjoy an activity，don't ruin it by overdoing it.当你喜欢某项运动时，不要因做过头而坏了自己的兴致。Know your limits.要了解自己的极限。