边际利益;限界利润

[00:00.00]Module 14 FESTIVE SEASONS [00:05.08]UNIT 3 Christmas around the world [00:08.65]6 Listen and tick [00:11.85]Now listen to Peter and Feifei's dialogue [00:15.47]and tickthe correct boxes. [00:18.45]Tell me about New Year in England,Peter. [0

发表于:2018-12-29 / 阅读(67) / 评论(0) 分类 外研社新标准初中英语八年级

This is Scientific American's 60-Second Science, I am Karen Hopkin. This'll just take a minute. Biologists, traditionally track migrations by tagging animals with devices that allow their movements to be monitored. But Homo sapiens can't be fitted wi

发表于:2019-01-08 / 阅读(61) / 评论(0) 分类 Scientific American(六)月

Chinese Goods Top Christmas Wish List In Cameroon 中国商品在喀麦隆圣诞节愿望清单中成为抢手货 For many in predominantly Chrisian Cameroon, Christmas without new dresses, playthings and extraordinary food is unthinkable. Family bre

发表于:2019-01-13 / 阅读(56) / 评论(0) 分类 VOA标准英语2011年(十二月)

A light drizzle was falling as my sister Jill and I ran out of the Methodist Church, eager to get home and play with the presents that Santa had left for us and our baby sister, Sharon. Across the street from the church was a Pan American gas station

发表于:2019-02-08 / 阅读(78) / 评论(0) 分类 阅读空间

Go green this Christmas Want to have a fabulous festive season and cut down on your waste? Here's how to minimise your impact on the environment without missing out on all the fun It's possible to have a really wonderful Christmas and be environmenta

发表于:2019-02-08 / 阅读(69) / 评论(0) 分类 阅读空间

今天我们要学的词是Christmas。 Christmas, 是圣诞节的意思。A Christmas gift, 是圣诞礼物。A Christmas card dated Dec. 23, 1914 finally reached its destination after 93 years, 一张1914年12月23号寄出的圣诞贺卡经过93年,

发表于:2019-02-18 / 阅读(39) / 评论(0) 分类 英语每日一词