新概念英语第四册课文文本2 Spare that spider

2022-05-15 07:08:00来源：网络

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　　新概念英语第四册需要大家掌握的内容比较多，所以大家在学习这部分知识的时候，需要投入更多的时间和精力。那么具体的新概念英语第四册的都有哪些知识点，为了节省大家的时间，更全面的集中攻克本册的难点，下面小编为大家整理了“新概念英语第四册课文文本2 Spare that spider”，希望对大家的学习有更好的帮助。

　　Lesson 2 Spare that spider不要伤害蜘蛛

　　How much of each year do spiders spend killing insects?

　　Why, you may wonder, should spiders be our friends? Because they destroy so

　　many insects, and insects include some of the greatest enemies of the human

　　race. Insects would make it impossible for us to live in the world; they would

　　devour all our crops and kill our flocks and herds, if it were not for the

　　protection we get from insect-eating animals. We owe a lot to the birds and

　　beasts who eat insects but all of them put together kill only a fraction of the

　　number destroyed by spiders. Moreover, unlike some of the other insect eaters,

　　spiders never do the least harm to us or our belongings.

　　Spiders are not insects, as many people think, nor even nearly related to

　　them. One can tell the difference almost at a glance, for a spider always has

　　eight legs and an insect never more than six.

　　How many spiders are engaged in this work on our behalf? One authority on

　　spiders made a census of the spiders in a grass field in the south of England,

　　and he estimated that there were more than 2,250,000 in one acre; that is

　　something like 6 million spiders of different kinds on a football pitch. Spiders

　　are busy for at least half the year in killing insects. It is impossible to make

　　more than the wildest guess at how many they kill, but they are hungry

　　creatures, not content with only three meals a day. It has been estimated that

　　the weight of all the insects destroyed by spiders in Britain in one year would

　　be greater than the total weight of all the human beings in the country.

　　New words and expressions

　　Beast n. 野兽

　　Census n. 统计数字

　　Acre n. 英亩

　　Content adj. 满足的

　　本文参考译文

　　你可能会觉得奇怪，

　　蜘蛛怎么会是我们的朋友呢?因为它们能消灭那么多的昆虫，其中包括一些人类的大敌，要不是人类受一些食虫动物的保护，昆虫就会使我们无法在地球上生活下去，昆虫会吞食我们的全部庄稼，杀死我们的成群的牛羊。我们要十分感谢那些吃昆虫的鸟和兽，然而把它们所杀死的昆虫全部加在一起也只相当于蜘蛛所消灭的一小部分。此外，蜘蛛不同于其他食虫动物，它们丝毫不危害我们和我们的财物。

　　许多人认为蜘蛛是昆虫，但它们不是昆虫，甚至与昆虫毫无关系。人们几乎一眼就能看出二者的差异，因为蜘蛛都是8条腿，而昆虫的腿从不超过6条。

　　有多少蜘蛛在为我们效力呢?一位研究蜘蛛的权威对英国南部一块草坪上的蜘蛛作了一次调查。他估计每英亩草坪里有225万多只蜘蛛。这就是说，在一个足球场上约有600万只不同种类的蜘蛛。蜘蛛至少有半年在忙于吃昆虫。它们一年中消灭了多少昆虫，我们简直无法猜测，它们是吃不饱的动物，不满意一日三餐。据估计，在英国蜘蛛一年里所消灭昆虫的重量超过这个国家人口的总重量。

　　以上就是为大家整理的“新概念英语第四册课文文本2 Spare that spider”，希望可以帮助大家更好地学习新概念英语第四册内容，更多内容敬请关注!

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