Passage 18 Flowering Plants What are the parts of a flower? Flowers can have male parts and female parts. The female parts make eggs that become seeds. The male parts make pollen. Pollen is a powdery material that is needed by the eggs to make seeds

发表于:2018-11-30 / 阅读(586) / 评论(0) 分类 英语专业四级听写

What arc the parts of a flower? Flowers can have male parts and female parts. The female parts make eggs that become seeds. The male parts make pollen. Pollen is a powdery material that is needed by the eggs to make seeds. To make seeds, pollen and e

发表于:2018-12-01 / 阅读(166) / 评论(0) 分类 新东方CET6阅读

One thing that excited him for many years is just how advanced their communication is, especially their famous waggle dance, returning from a foraging trip, this bee is telling its coworkers precisely where she found her pollen. They just use the bod

发表于:2018-12-03 / 阅读(86) / 评论(0) 分类 探索与发现2013年

For those of us lucky enough to always have enough food and water, it may be hard to imagine living through a drought. A drought occurs when for a variety of reasons, usually includinga lack of rainfall and warm temperatures. Soil moisture severely d

发表于:2018-12-05 / 阅读(147) / 评论(0) 分类 有声杂志阅读

Science and technology: Evolution: Bee kind to viruses 科学技术:进化:蜜蜂爱病毒 A strange tale of collaboration between plants, pathogens and insects. 植物、病毒和昆虫的奇特合作。 Cucumber mosaic virus is not restricted t

发表于:2018-12-05 / 阅读(45) / 评论(0) 分类 经济学人科技系列

Why Honey Turns Hard If a little honey drizzled on a piece of homemade toast or into a cup of tea is how you like to start the day, youre not alone. One drawback to honey, though, is that after sitting too long on the shelf, it crystallizes and that

发表于:2018-12-27 / 阅读(77) / 评论(0) 分类 英语时差8,16

Death By Peanut Peanuts are one of the worlds most nutritious foods. Peanuts contain pound for pound more protein, vitamins, and minerals than beef liver and more fat than heavy cream. For approximately .5% of Americans, however, peanuts are not so b

发表于:2018-12-31 / 阅读(45) / 评论(0) 分类 英语听力文摘 English Digest

046 The Wise Old Lady A long time ago, there was a young man who wanted to be a writer. He wanted to get married and to live writing compositions, but he couldn't discover what he had to write. He couldn't come up with any good stories, and it seemed

发表于:2018-12-31 / 阅读(221) / 评论(0) 分类 100个儿童英语小故事

We started building MIRA, A P.C. software platform that uses this Kinect device, a motion capture camera, 我们开始写MIRA,这是个PC机上的软件平台,使用Kinect感应器 to transform traditional exercises into video games. 将传统的复

发表于:2019-01-03 / 阅读(55) / 评论(0) 分类 TED演讲科学篇

DAVID GREENE, HOST: And now some bad news for bees. There is new evidence that they are being harmed by some widely used pesticides though it may be only if the bees already are vulnerable. Here's NPR's Dan Charles. DAN CHARLES, BYLINE: These pestici

发表于:2019-01-16 / 阅读(69) / 评论(0) 分类 2017年NPR美国国家公共电台7月

迷你对话: A: Why do you look so bad? 怎么看上去你这么难过? B: Im in pretty bad shape. I am having an allergy all the time. 我情况很糟,一直过敏。 A: Why not go and see a doctor? 干嘛不去看大夫。 B: I never trust t

发表于:2019-01-21 / 阅读(101) / 评论(0) 分类 迷你对话学地道口语

The picturesque Western Cape mountain range at the southern tip of Africa lays claim to one of the world's most diverse floral kingdoms. And researchers are scouring the mountains in search of the droppings and urine of a small local inhabitant which

发表于:2019-01-22 / 阅读(115) / 评论(0) 分类 自然百科2009年

词根联想记忆法词汇教程(六)

发表于:2019-02-01 / 阅读(53) / 评论(0) 分类 英文语法词汇

当我们还停留在看脸的世界,花痴地说着你那么好看,说什么都是对的的时候,日本单身族已经走上了寻找灵魂伴侣的道路。东京一家婚恋公司日前推出口罩相亲活动,参与男女必须戴上大号

发表于:2019-02-05 / 阅读(90) / 评论(0) 分类 阅读空间

As the flower's heat increases, a cloud of odor rises up. The foul perfume carries far and wide. It doesn't go unnoticed. Carrion beetles arrive on the scene. The beetles come in search of a feast of warm decaying flesh, but they've been tricked. Sli

发表于:2019-02-05 / 阅读(56) / 评论(0) 分类 英语听力:文化博览2008年

Whilethenew doctrineseemsalmostcertainly correct,theonepapyrusfragment raisesthespecterthatanothermaybe (70)unearthed,showing,forinstance,that itwasaposthumousproductionofthe Danaidtetralogywhichbested

发表于:2019-02-06 / 阅读(66) / 评论(0) 分类 英文语法词汇

Our best guess is that the Etruscans came originally from Asia Minor and that a great war or a pestilence in that country had forced them to go away and seek a new home elsewhere. Whatever the reason for their coming, the Etruscans played a great r?l

发表于:2019-02-21 / 阅读(54) / 评论(0) 分类 美国学生人类历史

台湾籍旅美老师今天交给我们的句子是: This suggests that elevated body temperature may enhance the function of the immune system, meaning that we can get better faster. If left untreated, a fever will normally only last two or three

发表于:2019-03-04 / 阅读(112) / 评论(0) 分类 留美老师带你每日说英文

台湾籍旅美老师今天交给我们的句子是: The average person experiences dozens of individual itches each day. They can be triggered by all sorts of things, including allergic reactions, dryness, and even some diseases. 一般人每天会碰

发表于:2019-03-05 / 阅读(120) / 评论(0) 分类 留美老师带你每日说英文

It was the year of false spring, and he was eighteen again, down from the Eyrie to the tourney at Harrenhal. 那一年是错误的春天,他又回到了十八岁,陪着琼恩和劳勃从鹰巢城下山,远赴赫伦堡参加比武大会。 He co

发表于:2019-03-10 / 阅读(125) / 评论(0) 分类 冰与火之歌系列之《权力的游戏》