Ⅱ. Read the text on pages 84-85 and answer the questions.
阅读短文,回答下列问题。
1. When do babies start to learn to laugh?
2. Why is laughter the best medicine?
1) Laughter is good for our .
※When we laugh, our body takes in more to help it work well.
※When we laugh, our heart, stomach, and shoulders . Our muscles feel more after we laugh.
※Laughter helps our body to get , fight off and create chemicals to reduce over time.
2) Laughter is good for our .
※When we laugh, we'll feel less or .
※When we laugh, we'll feel and because of the chemicals our releases.
3. Are we more likely to laugh alone or around others?

4. What can you do when you feel unhappy?

II. 1. At around three months old. 2. 1) body; oxygen; work hard, relaxed; stronger, more diseases, pain 2) mood; stressed, anxious; calm, happy, brain 3. We are 30 times more likely to laugh around others. 4. Try thinking about something funny and laugh. (One possible version)

Ⅲ. Language learning. Read, think and practice. 读一读,想一想,练一练。
A) 朗读并口头翻译下面句子,然后完成 work 的小结。
1. Laughter also makes our body work out.
2. Our heart, stomach, and even our shoulders work hard when we laugh!
3. She works hard at math to get better grades.
4. He is working on a science project these days.
5. They work out in the gym every weekend.
6. Can you help me work out this math problem?
小结: 意为努力学习,努力工作; 意为从事,致力于; 意为解决,算出,锻炼。
B) 请用以上 work 构成的短语完成句子并口头翻译。
1. My best friend every day to improve her speaking skills.
2. He spends 30 minutes every morning in the park.
3. Our group a class project about environmental protection.

III. A) work hard, work on, work out B) 1. works hard 2. working out 3. works on