Unit 2 Healthy eating
话题：如何保持健康
体裁：议论文(提建议)
写作思路：
点明主题；提出建议；总结全文，篇末再次点题。
I'd like to share my ideas on how to keep healthy.Firstly，it is important that we should keep a balanced diet.For example，we should eat more fruit and vegetables because they are rich in fiber and vitamins.That's to say，we ought not to eat food which contains too much fat，sugar or oil so that we may not put on weight easily.Secondly，we'd better form a good living habit and go to bed early，get up early，exercise regularly and have enough sleep，which is beneficial to us.Of course，keeping a good attitude towards life is good for our health.In a word，only by combining good living habits with healthy eating habits，can we keep healthy.
Ⅰ.写出下列必考单词
