我市罗城县怀群镇剑江两岸的山水可与桂林山水相媲美，游客撑着竹排在剑江中游玩时看到的下列现象中，由光的折射形成的是（　　）

阅读短文，下列问题

    Everybody wants to be healthy. You know food is very important.There are many healthy foods. You can have more bananas, apples, oranges,tomatoes and lettuce because fruits and vegetables are good for you. But don't eat too much chocolate. It's not good for you. But don't eat too much chocolate. It's not good healthy food. Healthy food can make you grow and make you strong and happy. Remember there is a saying, “An apple a day keeps the doctor away.” Sports can also keep you healthy. Get up early and do some sports every day. Don't be lazy! You will be healthy and happy.

关于0.1mol/L Na₂CO₃溶液的叙述错误的是（　　）