新概念英语85年上外美音版第四册 第21课

　　Lesson 21 Science Makes Sense 知识源于科学
In the early days of the settlement of Australia, enterprising settlers unwisely introduced the European rabbit. This rabbit had no natural enemies in the Antipodes, so that it multiplied with that promiscuous¹ abandon characteristic of rabbits. It overran a whole continent. It caused devastation² by burrowing³ and by devouring⁴ the herbage which might have maintained millions of sheep and cattle. Scientists discovered that this particular variety of rabbit (and apparently⁵ no other animal) was susceptible⁶ to a fatal virus disease, myxomatosis. By infecting animals and letting them loose in the burrows⁷, local epidemics⁸ of this disease could be created. Later it was found that there was a type of mosquito which acted as the carrier of this disease and passed it on to the rabbits. So while the rest of the world was trying to get rid of mosquitoes, Australia was encouraging this one. It effectively spread the disease all over the continent and drastically reduced the rabbit population. lt later became apparent that rabbits were developing a degree of resistance to this disease, so that the rabbit population was unlikely to be completely exterminated⁹. There were hopes, however, that the problem of the rabbit would become manageable.
Ironically, Europe, which had bequeathed the rabbit as a pest to Australia acquired this man-made disease as a pestilence¹⁰. A French physician decided¹¹ to get rid of the wild rabbits on his own estate and introduced myxomatosis. It did not, however, remain within the confines of his estate. It spread through France where wild rabbits are not generally regarded as a pest but as a sport and a useful food supply, and it spread to Britain where wild rabbits are regarded as a pest but where domesticated¹² rabbits, equally susceptible to the disease, are the basis of a profitable fur industry. The question became one of whether Man could control the disease he had invented.

1 promiscuous   

adj.杂乱的，随便的

参考例句：

• They were taking a promiscuous stroll when it began to rain.他们正在那漫无目的地散步，突然下起雨来。
• Alec know that she was promiscuous and superficial.亚历克知道她是乱七八糟和浅薄的。

2 devastation   

n.毁坏；荒废；极度震惊或悲伤

参考例句：

• The bomb caused widespread devastation. 炸弹造成大面积破坏。
• There was devastation on every side. 到处都是破坏的创伤。 来自《简明英汉词典》

3 burrowing   

v.挖掘（洞穴），挖洞( burrow的现在分词 )；翻寻

参考例句：

• What are you burrowing around in my drawer for? 你在我抽屉里乱翻什么？ 来自《简明英汉词典》
• The forepaws are also used for burrowing and for dragging heavier logs. 它们的前爪还可以用来打洞和拖拽较重的树干。 来自辞典例句

4 devouring   

吞没( devour的现在分词 )； 耗尽； 津津有味地看； 狼吞虎咽地吃光

参考例句：

• The hungry boy was devouring his dinner. 那饥饿的孩子狼吞虎咽地吃饭。
• He is devouring novel after novel. 他一味贪看小说。

5 apparently   

adv.显然地；表面上，似乎

参考例句：

• An apparently blind alley leads suddenly into an open space.山穷水尽，豁然开朗。
• He was apparently much surprised at the news.他对那个消息显然感到十分惊异。

6 susceptible   

adj.过敏的，敏感的；易动感情的，易受感动的

参考例句：

• Children are more susceptible than adults.孩子比成人易受感动。
• We are all susceptible to advertising.我们都易受广告的影响。

7 burrows   

n.地洞( burrow的名词复数 )v.挖掘（洞穴），挖洞( burrow的第三人称单数 )；翻寻

参考例句：

• The intertidal beach unit contains some organism burrows. 潮间海滩单元含有一些生物潜穴。 来自辞典例句
• A mole burrows its way through the ground. 鼹鼠会在地下钻洞前进。 来自辞典例句

8 epidemics   

n．流行病

参考例句：

• Reliance upon natural epidemics may be both time-consuming and misleading. 依靠天然的流行既浪费时间，又会引入歧途。
• The antibiotic epidemics usually start stop when the summer rainy season begins. 传染病通常会在夏天的雨季停止传播。

9 exterminated   

v.消灭，根绝( exterminate的过去式和过去分词 )

参考例句：

• It was exterminated root and branch. 它被彻底剪除了。 来自《现代汉英综合大词典》
• The insects can be exterminated by spraying DDT. 可以用喷撒滴滴涕的方法大量杀死这种昆虫。 来自《用法词典》

10 pestilence   

n.瘟疫

参考例句：

• They were crazed by the famine and pestilence of that bitter winter.他们因那年严冬的饥饿与瘟疫而折磨得发狂。
• A pestilence was raging in that area. 瘟疫正在那一地区流行。

11 decided   

adj.决定了的，坚决的；明显的，明确的

参考例句：

• This gave them a decided advantage over their opponents.这使他们比对手具有明显的优势。
• There is a decided difference between British and Chinese way of greeting.英国人和中国人打招呼的方式有很明显的区别。

12 domesticated   

adj.喜欢家庭生活的；（指动物）被驯养了的v.驯化( domesticate的过去式和过去分词 )

参考例句：

• He is thoroughly domesticated and cooks a delicious chicken casserole. 他精于家务，烹制的砂锅炖小鸡非常可口。 来自《简明英汉词典》
• The donkey is a domesticated form of the African wild ass. 驴是非洲野驴的一种已驯化的品种。 来自《简明英汉词典》