阅读幽默 2

系列主题一：
Topics About Inventions and Machines
关于发明和机器的话题
* Why do golf balls have dimples?
* Did Thomas Edison really invent the light bulb?
* Why does a newspaper tear smoothly up and down but not side to side?
* How did coins get their names?
How do mirrors work?
* How does a battery, produce electricity?
* How does a thermometer tell the temperature?
* How does a sundial tell time?
* Ifnothing sticks to Teflon - how does Teflon stick to the pan?
What is an X-Ray?
* What makes a boat float?
* What do you call the iii symbol used in e-mail addresses?
What is dry ice?
* Who invented the zipper? Why do most Zippers have the
letters YKK on them?
where did Aspirin come from?
* How were shoes first made?
* Wherc did Band-Aids come from?
How did playing cards get their names?
Where did the Brassiere come from?
* wher did the piggy bank come from?
* where did the dollar sign come from?
* where did the idea tbr Kitty Litter come from?
* where did the idea for Vaseline Petroleum Jelly come from?
* where did the Microwave Oven come fi*om?
* where did the Piggy Bank come from?
* where did the song 'Happy Birthday to you come from?
* where does a compass really point?
* Which is correct:12Midnight A.M.or 12 Midnight P.M.?
* Who invented matches?
* Who invented the pencil?
系列主题二： Topics About The Environment,Space and Science关于环境、空间和科学的话题
系列主题三： Topice About Food,Drinks and Snacks 关于食品饮料的话题
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