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The tadpole is now able to walk, and to breathe the air just as we do, so it crawls out of the pond and lives in the damp grass. 现在, 蝌蚪能够爬行了, 而且可以像人类一样进行呼吸。因此, 它们会离开池塘, 进入到潮湿的草...

Lesson 93 Tadpole And Frog 第93课 蝌蚪与青蛙 Children who are fond of country walks, and who use their eyes well, 喜欢在乡村漫步并且善于观察的孩子们 will be sure to notice in early spring little lumps of jelly floating on some...

The little splints of wood which we call matches are made out of deal or pine wood which has been soaked in melted paraffin wax to make it burn more easily. 这种被我们称之为火柴的薄木片由欧洲赤松（松树）制成, 在液体的石蜡...

Lesson 92 A Box Of Matches 第92课 一盒火柴 We need fire every day, to warm our houses, or to cook our food, or to give us light. 我们每天都需要利用火来给房间加温、烹饪、照明。 Even savage tribes use fire for such purposes...

Soon all the little balls of cream have their skins or coats broken, and then the tiny pieces of milk-fat inside them stick together and make a lump of yellow butter. 很快, 奶油小球的外膜破碎, 里面的乳脂颗粒则会黏在一起成为一...

Lesson 91 Milk And Its Uses 第91课 牛奶及用途 Every child likes to drink new milk. 每个孩子都喜欢喝鲜牛奶。 How pleasant it smells and how sweet it tastes! 那香浓的味道, 甜美的滋味是多么诱人！ Do you not want to kn...

and hang it point downwards from a strip of wood placed across the top of a wide-mouthed bottle, or a pickle-glass, or a tumbler, half full of water. 然后尖头朝下悬挂在一片横放在装有半瓶水的宽口瓶、泡菜瓶或平底玻璃杯口...

If we take the acorn out of its cup and soak it in warm water for a few hours, it will split open, 如果我们把橡子从中取出, 放入温水浸泡, 几个小时之后它就会裂开。 and we shall see that it consists of two thick seed-leaves,...

Lesson 90 The Sturdy Oak 第90课 结实的橡树 The oak is one of the finest and most useful of all our forest trees. 在所有森林树种之中, 橡树是最为优良、最为有用的一种树木。 Its height sometimes exceeds sixty feet, while...

Every day the sun's rays change thousands of tons of liquid water into water-vapour; 每天, 太阳光都能够将数千吨的液态水转化为水蒸气； and this water-vapour mingles with the air, and is carried along by the wind. 随后, 水蒸气...