This is Scientific American's 60-Second Science, I am Karen Hopkin. This will just take a minute. Bubbles. Big ones entertain children and tiny ones tickle champagne aficionados. Even witches appreciate what they bring to a boiling cauldron. If you,

发表于:2019-01-08 / 阅读(54) / 评论(0) 分类 Scientific American(六)月

dial [5daiEl]vt. 拨(电话号码) redial重拨 dialogue[5daiElC^] (美 dialog) n. 对话 diamond [5daiEmEnd]n. 钻石,金刚石;纸牌中的方块 diary[5daiEri] n. 日记;日记

发表于:2019-01-09 / 阅读(71) / 评论(0) 分类 英文语法词汇

[00:02.71] [00:06.33]Listen to This [00:09.68]Write the number [00:12.85]1.This computer isn't working. [00:17.24]You should turn it on first! [00:20.87]2.I want to use the Internet. [00:25.15]You should ask your parents to help you. [00:29.55]3.Is t

发表于:2019-01-09 / 阅读(166) / 评论(0) 分类 北师大版小学英语六年级上

[0:0]discourage disgust disk dismiss [0:46.4036]disorder display disposal dispose

发表于:2019-01-16 / 阅读(81) / 评论(0) 分类 闭着眼睛飘单词 四级词汇

SCOTT SIMON, HOST: As 12-year-old old David Vetter was about to die at Texas Children's Hospital in 1984, he gave a last wink to his doctor, William T. Shearer. His wife told us Dr. Shearer carried that wink through the rest of his life. Dr. Shearer,

发表于:2019-01-17 / 阅读(53) / 评论(0) 分类 2018年NPR美国国家公共电台10月

DAVOS, Switzerland, Jan. 24 (Xinhua) -- German Chancellor Angela Merkel on Thursday warned of bubble driven by improper regulations on financial institutions. Addressing business and political leaders at the World Economic Forum here, Merkel called o

发表于:2019-02-11 / 阅读(91) / 评论(0) 分类 英语新闻