在生物课上（笑话，译文）

译自德语by me，  英语由gemini proofread过 

“Is it true that whales live on sardines?” Hans asks his teacher during biology class.

“Of course, Hans!” the teacher replies.

To which Hans responds: “Then how does the whale open all the tin cans?”

“鲸鱼以吃沙丁鱼为生，这是真的吗？” 汉斯在生物课上问他的老师。

“汉斯，这是真的！” 老师回答。

汉斯接着又问：“那么鲸鱼是怎么把所有的沙丁鱼罐头盒打开的呀?”

p. 9.  Schülerwitze.  Fischer Verlag.  Stuttgart.  1984.