by Jason Marshall Weve now talked about three methods for calculating average values: the mean, median, and mode (affectionately known as the three Ms). So, are we done? Is that everything we could ever want to know about interpreting average values?

发表于:2018-12-07 / 阅读(72) / 评论(0) 分类 数学英语

新东方赵丽词汇课堂 Lesson 91听力下载

发表于:2018-12-15 / 阅读(99) / 评论(0) 分类 新东方赵丽词汇课堂

坚持不懈,直到成功。 我们每天的奋斗就像对参天大树的一次砍击,头几刀可能了无痕迹。每一击看似微不足道,然而,累积起来,巨树终会倒下。这恰

发表于:2019-01-03 / 阅读(25) / 评论(0) 分类 四六级词汇与结构练习

This is Scientific American's 60-Second Science. I'm Steve Mirsky. Got a minute? The 2011 Nobel Prize in chemistry goes to Daniel Schechtman of the TechnionIsrael Institute of Technology in Haifa. Schechtman discovered what are called quasicrystals.

发表于:2019-01-08 / 阅读(72) / 评论(0) 分类 Scientific American(十)月

A: Hey, Devi, have you thought about where would you like to go to dinner on Friday for your birthday? B: I am not sure. I don't know that many restaurants around here. A: You know, we could look online at the local Internet sites. B: Good. Let's tak

发表于:2019-01-15 / 阅读(56) / 评论(0) 分类 英语情景对话-餐厅

A: Devi, have you thought about where would you like to go to dinner on Friday for your birthday? B: I am not sure. I don't know that many restaurants around here. A: You know, we could look online at the local Internet sites. B: Good. Let's take a l

发表于:2019-01-21 / 阅读(55) / 评论(0) 分类 食物-Food