英国学生科学读本 第72期:聪明的蜘蛛(1)

Lesson 72 The Clever Spider 第72课 聪明的蜘蛛 You may have seen men setting nets in the sea, or in a river, to catch fish. Let me tell you about the little animals that are always setting nets in your house and in your garden in much the same

英国学生科学读本 第72期:聪明的蜘蛛(2)

Try to find a spider's web on a bush or on the grass in your garden, and look very closely at it. The spider makes the outside lines of the web first. Then it forms the lines which extend like the spokes of a wheel from the centre of the net to the e

英国学生科学读本 第60期:卷心菜(2)

Instead of cutting all our cabbage plants, we shall leave a few in the ground until the end of the summer. Soon the heart of each plant will open, and long stems will grow up from its centre. Small yellow flowers then appear on these stems. Each flow

英国学生科学读本 第62期:吃苦耐劳的驴子(1)

Lesson 62 The Patient Donkey 第62课 吃苦耐劳的驴子 Have you ever heard a donkey bray? What a noise he makes! Even if you have not heard one, I am sure that you have all seen a donkey, and perhaps some of you have ridden one at the seaside on

英国学生科学读本 第63期:有用的椰子(2)

This soft black mark is the place through which the young palm-tree would force its way out, if the cocoanut were planted in the soil of its native land. 如果种植在原生地的土壤之中，年幼的椰子树就会通过这个柔软的黑色斑点

英国学生科学读本 第62期:吃苦耐劳的驴子(2)

There is a clear space in the jaws between the front and the back teeth, and into this space we put the steel bit to which the reins are fastened when we drive or ride the donkey. 在驴子前后牙齿之间的腭部有一片空白区域，我们将铁

英国学生科学读本 第40期:甘蔗(1)

Lesson 40 The Sugar-Cane 第40课 甘蔗 Have you a sweet tooth? Do you like things with sugar in them? If you do (and I am almost sure that you do),you will like this lesson, for it will tell you where sugar comes from, and all about it. 小朋友，你

英国学生科学读本 第35期:蒸汽往上冒(1)

Lesson 35 Getting up Steam 第35课 蒸汽往上冒！ Do you want to know what steam is? Let us get a lump of ice, or a snow-ball, and place it in a saucer in a warm room. It soon melts, and then the saucer is half full of water. If we leave the sau

英国学生科学读本 第37期:关于便士(2)

This is done by placing the blank in a steel case, or die, on which are carved all the marks that you see on one side of a penny. 这就要把坯饼放进一个钢制模具里面， 在模具上， 刻上了硬币一边的所有图案。 On another s

英国学生科学读本 第38期:人类的帮手-马(1)

Lesson 38 Our Helper, The Horse 第38课 人类的帮手马 The horse is an animal which seems to have been made for helping us in our daily work. we ride on its back, and we get it to pull heavy loads in carts. 马这种动物, 似乎生来就是为人

英国学生科学读本 第44期:砖是怎么做出来的(1)

Lesson 44 How Bricks Are Made 第44课 砖是怎么做出来的 We know that bricks are made of burned clay; but let us try to learn something more about them. Have you ever measured a brick? If you do so, you will find that its length is nine inches

英国学生科学读本 第43期:一块粘土(2)

What has become of the water? Dry clay is full of tiny pores, and it has sucked up the water into its pores. 水上哪儿去了？干燥的粘土满是细小的孔洞，把水都吸到孔洞里去了。 Now let us mould our lump of soft clay into the

英国学生科学读本 第42期:调皮的麻雀(1)

Lesson 4 The Saucy Sparrow 第4课 调皮的麻雀 What little birds are these that build their nests in our great cities, and do not mind the smoke and the noise and the bustle? What little birds are these that hop about our crowded streets, and pic

英国学生科学读本 第41期:糖是怎么生产的(1)

Lesson 41 How Sugar Is Made 第41课 糖是怎么生产的 After the negroes have cut up the stems of the sugar-cane into short lengths, they carry these to a building where there are a number of heavy iron rollers, which are turned by a steam-engine

英国学生科学读本第44期:砖是怎么做出来的(2)

In hot countries bricks are often used which have simply been dried in the sun in this way. But these sun-dried bricks will not stand much rain: the water soaks into them, and they once more become lumps of soft clay. 在炎热的地区，以前经常把

英国学生科学读本 第49期:栗子

Lesson 49 Chestnuts 第49课 栗子 How nice it is to go for a country walk in the spring, when everything looks fresh and green, and the air is not too hot! Probably we shall not have to go very far before we see the fine large shady tree called the

英国学生科学读本 第50期:只是一块石头(1)

Lesson 50 Only A Stone 第50课 只是一块石头 What is the oldest thing you have seen? One boy thinks it is a church, for he has seen a date on one which tells that it was built hundreds of years ago. 小朋友，你见过的最古老的东西是什

英国学生科学读本 第51期:一块煤(1)

Lesson 51 A Lump Of Coal 第51课 一块煤 Let us take a lump of coal in our hand. It is black in colour, and it will dirty our fingers a little, but we must not mind that. Coal is hard; but it breaks into pieces if we strike it with a hammer, and s

英国学生科学读本 第51期:一块煤(2)

In the layers of clay and sandstone between the seams of coal we often find the remains of plants very well preserved indeed. In the coal itself it is very hard to tell one plant from another, for they have all been crushed together. 在煤层之间的

英国学生科学读本 第54期:硬壳螃蟹(2)

Many crabs are found with sea-weed and even with shell-fish growing on their backs. This helps them to catch the little fishes on which they live. The fishes do not notice the crab when its shell is covered in this way. 人们发现很多螃蟹背上都