3. If I tell a bad joke does it make you split your sides or groan?

If you hear a bad joke you groan, which means to laugh awkwardly or in a forced way.

4. How do you make a rat laugh?

You tickle a rat to make it laugh.

5. True or false? The part of the brain responsible for speaking is newer than the part used for laughing.

True. The part of the brain used for laughing is an older part we share with other mammals. 

2. 请你在不参考课文的情况下完成下列练习。选择一个意思合适的单词填入句子的空格处 。

1. I can't stop giggling whenever Tim talks. He's just so funny.

2. He backed up his claim with photographic evidence.

3. After running for 10 miles I was wheezing heavily.

4. Don't you dare say that again or you'll be laughing on the other side of your face.

5. Police were sent in to deal with a threatening situation.

【Why do we laugh? 为什么我们会笑？】相关文章：

★ Too much stuff 物质主义和简约主义

★ Photobomb 抢镜头

★ Greetings after a short break 小别后的问候

★ Air kiss 飞吻

★ It's on the cards 这件事十有八九会发生

★ Dictionary and other words 与“词典”相关的近义词

★ Why do we like different tastes? 为什么我们喜欢不同的口味？

★ Slippery bottle and women on South Pole trek 科学家研发 “不粘瓶”，女性探险队远涉南极

★ It takes two to tango 一个巴掌拍不响

★ 在伦敦的大学