un. 叶绿素B
[网络] 叶绿素乙；叶绿素镁

VOA慢速英语--秋天的颜色不仅是红色和蓝色

AS IT IS 2016-11-05 Fall Colors Not Only Red and Blue 秋天的颜色不仅是红色和蓝色 This is Whats Trending Today. Americans often identify the two major political parties by the colors red and blue. The practice began with the 2000 election

发表于:2018-12-16 / 阅读(215) / 评论(0)

2016年VOA慢速英语(十一)月

VOA慢速英语20061031b

SCIENCE IN THE NEWS - A Taxi at 12,000 Meters? New Mini Jets Are About to Shake Up World of Air TravelBy Brianna Blake, Jerilyn Watson and Nancy Steinbach Broadcast: Tuesday, October 31, 2006 VOICE ON

发表于:2019-01-02 / 阅读(181) / 评论(0)

2006年慢速英语（十）月

VOA标准英语2011--Autumn Leaves Show Their True Colors

Autumn Leaves Show Their True Colors As days grow shorter and nights grow cooler in Boulder, Colorado, the green leaves of summer have been putting on party colors. On cottonwood trees and aspens, theyre golden yellow coins. On Mapleton Avenue, the m

发表于:2019-01-13 / 阅读(217) / 评论(0)

VOA标准英语2011年(十一月)

美国国家公共电台 NPR Ad For Nice Living: Discover Trees, Now With Chlorophyll

AUDIE CORNISH, HOST: Need a distraction from the news? ARI SHAPIRO, HOST: We have one. CORNISH: It's a reminder of the good things in life that are free. SHAPIRO: Another commercial for Nicer Living. (SOUNDBITE OF ARCHIVED RECORDING) UNIDENTIFIED MAN

发表于:2019-01-17 / 阅读(224) / 评论(0)

2017年NPR美国国家公共电台2月

英语听力—环球英语 1319 Growing Fruit in the Desert

Voice 1 Welcome to Spotlight. Im Liz Waid. Voice 2 And Im Adam Navis. Spotlight uses a special English method of broadcasting. It is easier for people to understand - no matter where in the world they live. Voice 1 In the last fifteen years, farmers

发表于:2019-01-19 / 阅读(191) / 评论(0)

环球英语 Spotlight

详解雅思阅读的三类高频话题

雅思阅读考试备考中很重要的一个部分就是对雅思阅读文章题材的熟悉和掌握。雅思阅读考试的文章通常分为生物、地理和社会科学三类。雅思文章的出处有很多，其中最实用的、便于积累背

发表于:2019-02-12 / 阅读(253) / 评论(0)

雅思英语

【英语时差8,16】秋季落叶的奥秘-下

Because chlorophyll is the chemical responsible for making leaves green, its absence allows chemicals such as carotinoids, xanthophylls, and others to give leaves their orange, yellow, and various other colors. As trees stop producing chlorophyll, th

发表于:2019-02-15 / 阅读(176) / 评论(0)

英语时差8，16

英语听力文摘 English Digest 169、What are fungi, plants or animals?

Well, mushrooms are merely one of many types of fungi. Not all fungi grow in soil. However, mushrooms and other fungi do resemble plants in many ways, so much so that scientists long classified fungi plants, but they know better now. Eating Habits Wh

发表于:2019-02-24 / 阅读(158) / 评论(0)

英语听力文摘 English Digest

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学英语单词

(resin/ wood) tapping

auxiliary steam source

barking in strips

beta-tocopherol