浴缸定理(比喻生产与消费间的关系)

[00:00.00]Unit 3 [00:12.83]Is that dog yours? [00:16.20]Part 1.Ask and answer [00:21.68]1.Whose toy car is this?Is it yours? [00:29.78]No,it isn't. [00:32.68]Maybe it's Sam's. [00:36.57]2.Tom,is that dog yours?No,it isn't. [00:45.27]Then whose dog is

发表于:2018-11-30 / 阅读(92) / 评论(0) 分类 新版剑桥少儿英语二级 (上)

[ti:UNIT 6 Get Ready for Jobs Lesson 43 Let Me Check My Calendar] [0:00.572]UNIT 6 第六单元 [0:02.461]Get Ready for Jobs 为就业做好准备 [0:05.230]Lesson 43: 第43课: [0:07.010]Let Me Check My Calendar 我来检查一下我的日程表 [

发表于:2018-12-10 / 阅读(125) / 评论(0) 分类 初中三年级英语

[00:00.95]第五课 [00:01.91]WORDS [00:02.43]单词 [00:02.95]comb [00:05.16]梳子 [00:07.37]mirror [00:09.22]镜子 [00:11.08]brush teeth [00:13.77]刷牙 [00:16.46]toothbrush [00:19.28]牙刷 [00:22.10]toilet paper [00:25.47]卫生纸 [00:28.84]sink [00:31.01]洗

发表于:2018-12-13 / 阅读(82) / 评论(0) 分类 学前儿童英语第三册

With few days remaining this summer, I realize that I have worked through the entire season and haven't had time to do my traditional summer ritual, something I started 20 years ago. That's Day to Day contributing writer Annabelle Gurwitch. The summe

发表于:2019-01-08 / 阅读(190) / 评论(0) 分类 2006年NPR美国国家公共电台

A middle-aged man with a long beard was arrested by the police for disorderly conduct and property damage. More charges might be added later, said a police officer. The man, identified as Bill Wild, checked into the Motel Five last night about an hou

发表于:2019-01-27 / 阅读(64) / 评论(0) 分类 365个英语简短小故事

数学常用短语与从句 Phrases or clauses frequently used in mathematics 常见的涉及运算的短语或句子 1. Differentiate both sides of the equation and we get... Integrate both sides of the equation and we get... 2. Differentiating both sides of the equatio

发表于:2019-02-07 / 阅读(53) / 评论(0) 分类 英文语法词汇