by Jason Marshall In the last article, we learned that there are several ways to calculate the average value of a sample of data. We focused on one such method, the arithmetic mean, and used it to calculate the average number of potato chips in a bag

发表于:2019-01-02 / 阅读(113) / 评论(0) 分类 数学英语

AGRICULTURE REPORT - Restrictions on Methyl Bromide By Mario Ritter Broadcast: Tuesday, March 16, 2004 This is Steve Ember with the VOA Special English Agriculture Report. Graphic Image Some chemicals

发表于:2019-01-06 / 阅读(95) / 评论(0) 分类 农业与发展

By Craig Fitzpatrick Washington, DC 28 July 2006 watch Saving the Tigers report Tigers have long been a symbol of grace, power and majesty. Because of this their body parts are highly prized in Asian countries. A new study by environmentalists says

发表于:2019-01-09 / 阅读(79) / 评论(0) 分类 2006年VOA标准英语(七月)

A: Why'd you pull me over? B: Are you aware that you drove through a red light? A: I ran a red light? B: Yes, you did. A: I apologize, but I didn't realize that I did that. B: Weren't you taught that yellow means slow down, not speed up? A: I did lea

发表于:2019-01-15 / 阅读(59) / 评论(0) 分类 英语情景对话-驾驶

A: What's wrong, officer? B: You do realize that you ran a red light, don't you? A: I did? B: You didn't see the red light? A: I'm sorry for running it, but I really didn't know. B: Didn't you learn that red means stop? A: I know that. B: Then tell m

发表于:2019-01-15 / 阅读(58) / 评论(0) 分类 英语情景对话-驾驶

A: Is there a problem, officer? B: I stopped you for driving through a red light. A: Did I really? B: You didn't know? A: I had no idea that I ran it. B: Don't you know that yellow means slow down? A: Yes, sir. B: Why'd you speed up instead? A: I rea

发表于:2019-01-15 / 阅读(65) / 评论(0) 分类 英语情景对话-驾驶