英国学生科学读本 第34期:大麦(2)

Each seed of barley ends in a sort of bristle, called an awn. 每个大麦粒的末端都是一根又长又硬的毛，叫做麦芒。 Do you remember how insects help flowers to form their seeds by carrying pollen from one blossom to another? 小朋友

英国学生科学读本 第12期:猫

Lesson 12 THE CAT 第12课 猫 I hope you have a nice pussy at home, and that you are good to her. Take her on your knee and look at her. How she purrs when you stroke her back! 小朋友, 你家里有没有一只漂亮小猫啊? 你有没有好好地照

英国学生科学读本 第37期:关于便士(1)

Lesson 37 All About A Penny 第37课 关于便士 When I was a little boy, pennies, and halfpennies, and farthings were made of pure copper. But copper is too soft a metal to stand the rubbing which coins get. So these old pennies soon became so smoo

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36期:浑身是宝的绵羊(2)

In the front of its lower jaw there are eight sharp teeth for nipping. There are no teeth in its upper jaw opposite these, but there is a hard pad instead. At the back of its mouth the sheep has six teeth with flat tops on each side of each jaw. Thes

英国学生科学读本 第35期:蒸汽往上冒(2)

There would soon be an explosion; the kettle would be burst open. It is in this way that boiler explosions are often caused. When there is too much steam in a boiler, and it cannot get out, it presses against the sides of the boiler, until at last th

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39期:柔韧的软金属-铅(1)

Lesson 39 A Soft And Flexible MetalLead 第39课 柔韧的软金属铅 In Wales, in Derbyshire, and in the north of England, hills made of limestone are very common. In the cracks of this limestone we often find a beautiful silvery mineral called gal

英国学生科学读本(MP3+双语字幕) 第38期:人类的帮手-马(2)

The horse has small pointed ears, which it can raise or prick up and turn round when it wants to listen. Itseyes are large, and are placed so that it can see both in front and sideways without turning its head. 马的耳朵又小又尖, 可以竖起来

英国学生科学读本 第39期:柔韧的软金属-铅(2)

When the sheets are very thin, they are called lead-foil. A great deal of lead-foil is used in China, to line the chests in which tea is sent to Europe. 特别薄的薄片儿就叫做铅箔, 中国就是用大量的铅箔来垫在茶叶箱里, 做成铅

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36期:浑身是宝的绵羊(1)

Lesson 36 The Useful Sheep 第36课 浑身是宝的绵羊 The sheep is not very much like the cow, is it? It is much smaller, and it has quite a different kind of coat.But still the sheep and the cow are of the same familythe large family of animals

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64期:红色金属--铜(2)

Copper can be rolled or hammered out into thin sheets, and so we say that it is malleable. It can also be easily drawn out into wire, and for this reason we call it ductile. Sheet copper is much used for covering the bottoms of ships, and for making

英国学生科学读本 第64期:红色金属--铜(1)

Lesson 64 The Red Metal Called Copper 第64课 红色金属铜 There is only one metal which is red in colour. Its name is copper. On the shores of Lake Superior in North America, lumps of pure copper are found in the rocks; but in Cornwall , and in

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63期:有用的椰子(1)

Lesson 63 The Useful Cocoa-nut 第63课 有用的椰子 Cocoa-nuts grow in clusters at the top of a palm-tree which is found in most hot countries. This palm has a slender brown stem, sometimes from sixty to ninety feet high, without branches, but be

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61期:雪花莲(2)

If you cut this seed-vessel across with a pen-knife, you will find inside it some tiny young green seeds. 用一把小刀将这个种皮切开，就能看到里面尚未成熟的绿色小种。 Within the flower of the snow-drop you can see some gree