109.A Wild Guess

　　Our physics professor was struggling to draw the class into discussion of Archimede's principle of water displacement¹. He told us that Archimede noticed that when he got into a pool at the public bathhouse, the water rose spilling over the edge. Excited at his discovery, he ran down the street yelling, "Eureka, eureka!" The instructor² asked if anyone knew what that meant.

　　One student stood up and answered, "I'm naked ! I'm naked!"

Notes:

　　(1) draw the class into discussion引导全班讨论

　　(2) principle n.原理

　　(3) displacement n. 排水量

　　(4) spill v.（指液体或粉末）溢出；洒出

　　(5) yell v.叫；喊

Exercises:

根据短文回答下列问题：

　　① What subject did the prefer teach?

　　②Z How was he trying to draw the class into discussion?

　　③ Where was Archimede having a bath?

　　④ What did he notice when Archimede was having a bath?

　　⑤ What does "eureka" mean?

109.奇猜异想

　　我们的物理教授千方百计引导我们讨论阿基米德的排水原理。他告诉我们阿基米德去公共浴池洗澡，他进入池子，发现水涨高了，溢出池沿。他对这一发现十分激动，跑到街上高叫：“Eureka，Eureka！”教授问我们谁知道他喊的是什么意思。

　　一个学生站起来答道：“我光屁股啦，我光屁股啦！”

练习参考答案：

　　① Physics.

　　② He told a story about Achimede.

　　③ At the public bathhouse.

　　④ He noticed that when he got into the pool, the water rose spilling over the edge.

　　⑤ It means "I have found it"

1 displacement   

n.移置，取代，位移，排水量

参考例句：

• They said that time is the feeling of spatial displacement.他们说时间是空间位移的感觉。
• The displacement of all my energy into caring for the baby.我所有精力都放在了照顾宝宝上。

2 instructor   

n.指导者，教员，教练

参考例句：

• The college jumped him from instructor to full professor.大学突然把他从讲师提升为正教授。
• The skiing instructor was a tall,sunburnt man.滑雪教练是一个高高个子晒得黑黑的男子。