英国学生科学读本 第57期:硫(1)

Lesson 57 Sulphur 第57课 硫 Did you ever have to take a mixture of brimstone and treacle? This mixture has not a pleasant taste, but it is a useful medicine; and if it will do us good, we should not care much whether it has a nice taste or not. 小朋

英国学生科学读本 第56期:黄色的报春花(1)

Lesson 56 The Yellow Primrose 黄色的报春花 Spring time has come, and the April showers have brought the yellow primroses in thousands to bloom in our woods and lanes, and on our banks and meadows. 春天来了，四月的绵绵细雨，让成千上

英国学生科学读本 第56期:黄色的报春花(2)

One kind has in its eye a little green knob just like the head of a pin; these are called pin-eyed. The other kind has a fringe of little yellow dust-spikes instead; such flowers are called thrum-eyed. 其中一种的眼中，有一个小小的绿球，

英国学生科学读本 第57期:硫(2)

The fumes of burning sulphur will bleach straw, silk, and other things, and make them white and clean. These fumes are also useful for killing the germs which cause fevers and other diseases. 燃烧的硫磺冒出的烟，可以漂白稻草、丝绸和

英国学生科学读本第58期:毛毛虫向前爬(1)

Lesson 58 The Creeping Caterpillar 第58课 毛毛虫向前爬 All birds lay eggs. If the eggs are kept warm, after a certain time a little bird, just like the parent birds, comes out of each egg. 鸟儿都会下蛋。如果鸟蛋能保持温暖，过一

英国学生科学读本第59期:美丽的蝴蝶(1)

Lesson 59 The Beautiful Butterfly 第59课 美丽的蝴蝶 What a lovely creature a butterfly is! Look at the butterflies in the picture, flying about among the blossoms. They are getting good food from the flowers, but they are doing no harm to them

英国学生科学读本 第59期:美丽的蝴蝶(2)

The butterfly is an insect. We see that its body is divided into three parts, and that each part is made of a number of rings joined to one another. It has three pairs of jointed legs and two pairs of wings, all of which grow out of the middle part,

英国学生科学读本 第71期:樱桃树及其果实(1)

Lesson 71 The Cherry-tree And Its Fruit 第71课 樱桃树及其果实 The cherry-tree is a small tree which grows to a height of about twenty feet. Its stem is covered with a smooth brown bark, and its green leaves have saw-like edges, somewhat like

英国学生科学读本 第71期:樱桃树及其果实(2)

In fact, all these four plants belong to the same class. 实际上, 这四种植物同属一个种类。 If we visit the orchard again in June, we shall find that all the white flowers have fallen off the cherry-trees, and that the seed-vessel of eac

英国学生科学读本 第61期:雪花莲(1)

Lesson 61 The Snow-drop 第61课 雪花莲 When the new year comes, the snow-drop is the first of all the flowers to put forth its lovely white blossoms. We call it the snow-drop, not only because its flowers are white as snow, but also because they

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

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(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(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 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42期:调皮的麻雀(2)

In this way the sparrows do a great deal of good. If the grubs were not killed, they would eat up our garden plants, and the crops that grow in our fields. 这样, 麻雀就做了不少好事！如果麻雀不吃小虫子, 虫子就会把我们菜园里

英国学生科学读本 第41期:糖是怎么生产的(2)

The raw sugar is first dissolved in water, and is then carefully strained to make it clear. It is next boiled in large pans until the water has nearly all passed away as steam. 首先把粗糖溶解在水里, 进行严格的过滤, 把糖水滤清。然

英国学生科学读本 第46期: 一杯咖啡(2)

When the coffee-berries are ripe, they are either picked or shaken off the tree into cloths spread out below. 咖啡浆果成熟的时候, 就让工人摘下来, 或者从树上摇下来, 落到树下面铺着的布上。 The berries are then dried i

英国学生科学读本 第50期:只是一块石头(2)

Such old shells found in the rocks are called fossils. 这些从岩石中找到的古老甲壳，名叫化石。 Another kind of rock in which many fossils are found is called limestone. A drop of acid or of strong vinegar will tell you whether a sto

英国学生科学读本 第52期:苹果和苹果树(1)

Lesson 52 Apples, And The Apple-tree 第52课 苹果和苹果树 Apples, sweet apples! There never was a child who did not enjoy eating a sweet ripe apple. Did you ever see apples growing wild? If you walk through the country lanes in the month of Ma