蜘蛛的英文作文

蜘蛛可以有效地稳定生物种类的平衡；能减少稻米化学残毒，保障人畜安全；降低生产成品，获得增产增收。 我是最怕虫类的了，一到夏天我就会格外小心。什么虫类都不能进，只要一碰到到虫，我就会被吓得哭。 夏天刚刚来临，我在学校里等待开门。突然，感觉脖子一痒，什么也没想，就用手一抓，看见是一只蜘蛛，就赶紧往地上一扔。我吓得直抖，可看见蜘蛛在地上爬来爬去的，也挺好玩。就蹲在那看蜘蛛爬行。他似乎没有地方去了似的，就在这儿绕来绕去的`不可不离开。突然，一个同学走来，差一点就踩到小蜘蛛，我叹了一口气。那位同学就是不肯离开了，在这儿动来、、动去，每次都差一点。这次不偏不倚的正好踩到小蜘蛛，我看见它的腿动了一下，就再也不动了，被踩的想肉酱一样。那位同学踩死了蚂蚁。不！是我，我害死了那只蜘蛛，如果我把小蜘蛛放到安全的地方就没事了，不是吗？ 对不起，小蜘蛛。

考研作文 Spare that spider不要伤害蜘蛛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 6,000,000 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.