[00:03.89]Lesson 5 1 Dialogue [00:09.64]Mr Zhu is showing the students of Class 4 the chemistry lab. [00:16.30]Mr Zhu: Now,this is the chemistry lab. [00:20.45]Have you been in this lab before? All:No. [00:25.50]Mr Zhu: Ok,listen carefully,please. [0

发表于:2018-12-13 / 阅读(128) / 评论(0) 分类 高中英语人教版高一

By Zulima Palacio Kauai, Hawaii 18 June 2007 The Hawaiian archipelago represents the most isolated group of islands in the world. Plants and animals that are common to many people elsewhere only made it to these islands in the last few hundred years

发表于:2019-01-11 / 阅读(73) / 评论(0) 分类 2007年VOA标准英语(六月)

This is the VOA Special English Development Report. Dye can bring a little color to life. Most clothing is colored with dyes. Modern, manufactured dyes can be costly. Natural dyes from plant and animal products have been used since ancient times. So

发表于:2019-01-11 / 阅读(64) / 评论(0) 分类 2010年VOA慢速英语(八)月

1. It is one of natures great ironies that the availability of nitrogen in the soil frequently sets an upper limit on plant growth even though the plants leaves are bathed in a sea of nitrogen gas.(3+)下述情形真可谓是自然界的一个莫大讽

发表于:2019-02-01 / 阅读(29) / 评论(0) 分类 GRE英语

Onesuchnovelideais thatofinsertingintothechromosomes (25)ofplantsdiscretegenesthatarenot apartoftheplants’naturalconstitution: specifically,theideaofinsertinginto nonleguminousplantsthegenes,ifthey c

发表于:2019-02-18 / 阅读(38) / 评论(0) 分类 英文语法词汇

Ya?l: Hey Don, what's that? Don: It's a tomato I found! Don't you think it looks like Richard Nixon? I wonder why tomatoes and other fruits sometimes grow into such different shapes. Y: Scientists wonder about that too, and they are a step closer to

发表于:2019-03-06 / 阅读(91) / 评论(0) 分类 英语时差8,16