全新版大学英语综合教程第三册UNIT8-3

　　A Little Lamby Colne
Author Unknown
Mary had a little lamb,its fleece was slightly gray,
It didn't have a father, just some borrowed DNA¹.
It sort of had a mother,though the ovum was on loan,
It was not so much a lambkin,as a little lamby clone.
And soon it had a fellow clone,and soon it had some more,
They followed her to school one day,all cramming² through the door.
It made the children laugh and sing,the teachers found it droll³.
There were too many lamby clones,for Mary to control.
No other could control the sheep,since their programs didn't vary,
So the scientists resolved it all,by simply cloning Mary.
But now they feel quite sheepish,those scientists unwary,
One problem solved,but what to do, with Mary,Mary,Mary...

1 DNA   

(缩)deoxyribonucleic acid 脱氧核糖核酸

参考例句：

• DNA is stored in the nucleus of a cell.脱氧核糖核酸储存于细胞的细胞核里。
• Gene mutations are alterations in the DNA code.基因突变是指DNA密码的改变。

2 cramming   

n.塞满，填鸭式的用功v.塞入( cram的现在分词 )；填塞；塞满；（为考试而）死记硬背功课

参考例句：

• Being hungry for the whole morning, I couldn't help cramming myself. 我饿了一上午，禁不住狼吞虎咽了起来。 来自《简明英汉词典》
• She's cramming for her history exam. 她考历史之前临时抱佛脚。 来自《简明英汉词典》

3 droll   

adj.古怪的，好笑的

参考例句：

• The band have a droll sense of humour.这个乐队有一种滑稽古怪的幽默感。
• He looked at her with a droll sort of awakening.他用一种古怪的如梦方醒的神情看着她.