[化] 锕铀衰变系

英语诗歌:To Daffodils

Robert Herrick (1591-1674) Fair Daffodils, we weep to see You haste away so soon: As yet the early-rising Sun Has not attained his Noon. Stay, stay, Until the hasting day Has run But to the Even-song; And, having prayed together, we Will go with you

发表于:2019-01-02 / 阅读(61) / 评论(0)

英语诗歌

北师大版高中英语模块7--Unit 21 Lesson1-3

[00:01.17]It has also been proven that chewing gum [00:03.50]for long periods of time means [00:05.48]that the body does not have time to rest. [00:07.72]If this is the case, [00:08.95]the stomach may become tense. [00:10.85]Eventually this could lea

发表于:2019-01-10 / 阅读(216) / 评论(0)

北师大版高中英语模块7(选修)

北师大版高中英语模块7--Unit 21 Lesson1-1

[00:02.81]Unit 21 Human Biology Lesson 1 Chewing Gum [00:09.19]TO CHEW OR NOT TO CHEW... [00:12.21]Diet specialists regularly inform us [00:14.82]that it is important to chew our food properly. [00:17.74]They suggest that if we chew our food [00:19.7

发表于:2019-01-10 / 阅读(231) / 评论(0)

北师大版高中英语模块7(选修)

万物简史第150期:基本物质(22)

At McGill University in Montreal the young New Zealandborn Ernest Rutherford became interested in the new radioactive materials. With a colleague named Frederick Soddy he discovered that immense reserves of energy were bound up in these small amounts

发表于:2019-01-29 / 阅读(55) / 评论(0)

万物简史

used to 的用法

used to v used （否定式简写为usedn't）过去经常，以前常常 Weusedtogothereeveryyear. 我每年都去那儿。 Heisnotwhatheusedtobe. 他已不是旧日的他了。 Itusedtobebelievedtha

发表于:2019-01-30 / 阅读(58) / 评论(0)

英文语法词汇

Plastic pollution

Plastic Pollution NB: This is not an accurate word-for-word transcript Dan: Hello and welcome 6 Minute English from the BBC. Im Dan Walker Smith and today Im joined by Kate. Kate: Hello Dan. Dan: Now today Kate and I are talking about pollution. Kate

发表于:2019-02-04 / 阅读(52) / 评论(0)

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