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发表于:2018-12-02 / 阅读(71) / 评论(0) 分类 Scientific American(十二)月

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发表于:2018-12-13 / 阅读(133) / 评论(0) 分类 美国加州科学教材California Science GK

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发表于:2018-12-13 / 阅读(115) / 评论(0) 分类 美国加州科学教材California Science GK

Have you ever said, I know it like the back of my hand? Well, how well do you know the back of your hand? Or the back of your knee? Or behind your ears? Probably not as well as scientists at the National Institutes of Health who just completed a sur

发表于:2019-01-30 / 阅读(113) / 评论(0) 分类 60秒科学

Genome: Now in 3-D! In a study in the journal Science, researchers report the mapping of the three-dimensional structure of the human genome, and the finding that the cell's nucleus is divided into two regions, one where DNA goes to get expressed. Cy

发表于:2019-01-30 / 阅读(131) / 评论(0) 分类 60秒科学

DNA Testing to Help Sharks Keep Fins In a study in the journal Endangered Species Research, shark fins on sale were shown to be from a specific region in which shark populations have collapsed, evidence that may help change fishing regulations. Cynth

发表于:2019-01-30 / 阅读(177) / 评论(0) 分类 60秒科学

Your social media 你的社交网络 Your social media channels may be the reason you are single. 你单身,可能是因为你的社交网络。 Broadcasting your political views on your social media channels can eliminate any potential suitors wit

发表于:2019-02-01 / 阅读(53) / 评论(0) 分类 阅读空间

As time goes by / 时光流逝 Progress in predicting the outcome of relationships, and information about the genetic roots of fidelity, might also make proposing marriage more like a job application—

发表于:2019-02-04 / 阅读(88) / 评论(0) 分类 阅读空间

Lesson 32 Only A Cork 第32课 一块软木 Corks are so cheap and so common, that every child who reads this Lesson can get a cork to handle and to look at. Let us try with a pen-holder to keep a cork down at the bottom of a glass of water. It is ve

发表于:2019-02-13 / 阅读(63) / 评论(0) 分类 英国学生科学读本

Lesson 13 THE METAL CALLED IRON 第十三课 一种叫铁的金属 Iron is the most useful of all metals. Hammers, nails, grates, horse-shoes, railings, bridges, and many other things are made of iron. 在所有金属里面, 铁是最有用的一种。

发表于:2019-02-13 / 阅读(65) / 评论(0) 分类 英国学生科学读本

Lesson 29 The Fly 第29课 苍蝇 The common fly which you so often see on the window-panes is called the house-fly. The large flies which are so fond of meat are called blow-flies. 小朋友, 你在窗玻璃上经常看见的普通苍蝇, 叫家蝇,

发表于:2019-02-13 / 阅读(92) / 评论(0) 分类 英国学生科学读本

Lesson 16 A PIECE OF WOOD 第十六课 一块木头 How many things in this room are made of wood? There are so many that it would take you a long time to name them. 小朋友, 你屋子里的东西有多少是木头做的? 太多了, 把它们都说一

发表于:2019-02-13 / 阅读(90) / 评论(0) 分类 英国学生科学读本