标签：pollen 相关文章

VOA慢速英语 200707110041

This is the VOA Special English Health Report. An allergy is an unusually strong reaction to a substance. Many things can cause allergies. The most common cause is pollen. Trees usually produce pollen in the spring, grasses in the summer and weeds in

发表于:2018-12-15 / 阅读(55) / 评论(0) 分类 VOA慢速英语2007年（七）月

VOA慢速英语20060103a

AGRICULTURE REPORT - The Business of Bees and Beekeeping (Part 3 of 3)By Mario Ritter Broadcast: Tuesday, January 03, 2006 I'm Steve Ember with the VOA Special English Agriculture Report. Bees not onl

发表于:2018-12-17 / 阅读(51) / 评论(0) 分类 2006年慢速英语（一）月

SSS 2008-11-26

Darwin's fabled isles, the Galapagos, are in need of a makeover. And removing invasive species of plants tops the to-do list for the islands restoration. But six species that were set to be exterminated have gotten a reprieve. Because a new study fin

发表于:2018-12-24 / 阅读(107) / 评论(0) 分类 Scientific American(十一)月

王玉梅托福词汇 Word_list_28

词条 含义 近义 perception n. 理解；感知，感觉 understanding, feeling, sense perceptive adj. 感知的；有洞察力的 discerning, insightful , incisive conception n. 观念，概念 mi

发表于:2018-12-30 / 阅读(147) / 评论(0) 分类 王玉梅托福词汇配套MP3

英伦广角 干烤可能会引起花生的易过敏潜质

Exposure to peanuts can be deadly to people with an allergy. But heres a finding that could start to thwart the peanut threat: peanuts that are dry roasted may be more likely to trigger an allergic reaction than do their raw counterparts. At least th

发表于:2019-01-02 / 阅读(78) / 评论(0) 分类 英伦广角

SSS 2009-09-11

We humans love to decorate things. We wear flashy clothes, tie ribbons to suitcases and personalize the cases for our iPhones. And apparently weve had this tendency for a long, long time. More than thirty-four thousand years, to be exact. Harvard res

发表于:2019-01-08 / 阅读(62) / 评论(0) 分类 Scientific American(九)月

SSS 2011-02-03

Orchids are among the most successful flowering plants, with more than 22,000 species around the world. And thats not just because of the obsession they inspire in their human fans. Researchers spent 10 years studying orchids in South Africa, where t

发表于:2019-01-08 / 阅读(70) / 评论(0) 分类 Scientific American(二)月

与美国小学生一起学英文第3册 第5期:蜜蜂

Bee 蜜蜂 Many people do not like bees. 许多人不喜欢蜜蜂。 Bees protect themselves and their hives by stinging humans. 蜜蜂会蜇人来自卫和保护蜂巢。 However, bees do a lot of jobs in nature. 然而，事实上蜜蜂能做许多事

发表于:2019-01-10 / 阅读(73) / 评论(0) 分类 与美国小学生一起学英文第3册

VOA慢速英语 2007 0410a

This is the VOA Special English Agriculture Report. What has happened to America's honeybees? Last fall, beekeepers from states with warm climates began to report a sudden loss of honey bees. Losses were reported in twenty-four states and into Canad

发表于:2019-01-11 / 阅读(85) / 评论(0) 分类 VOA慢速英语2007年（四）月

VOA慢速英语2010年-SCIENCE IN THE NEWS - What People With

This is SCIENCE IN THE NEWS in VOA Special English. I'm Faith Lapidus. VOICE TWO: And I'm Bob Doughty. We recently told you about health problems linked to extreme heat. This week, we talk about the lung disease asthma. For people with asthma, extrem

发表于:2019-01-12 / 阅读(73) / 评论(0) 分类 2010年VOA慢速英语(九)月

VOA慢速英语2015 蜜蜂都哪去了?

Where Have All the Bees Gone? 蜜蜂都哪去了? Bees play an important part in the growth of crops. About 4,000 wild bee species are native to North America. Other bee species on the continent were imported from Europe to produce honey. Bees also s

发表于:2019-01-12 / 阅读(62) / 评论(0) 分类 2015年VOA慢速英语(四)月

流行美语 (Popular American) 306

李华来到Larry的公寓，两人一起吃晚饭。今天我们要学两个常用语： out of whack和such a wreck. LL: -Achoo- I have been sneezing all day. LH: 你没生病吧？ LL: No, I don't think I'm sick. I think I have allergies. All the

发表于:2019-01-15 / 阅读(60) / 评论(0) 分类 美国之音《流行美语》

流行美语 (Popular American) 334

开春了，李华和Larry在后院种花种菜。今天我们要学两个常用语：cut out for和fruit. LH: Larry, 我说的没错吧，种地就是好，既能回归自然，又能有所收获。 LL: Uh ... I'm not sure about that. My back hurts

发表于:2019-01-15 / 阅读(53) / 评论(0) 分类 美国之音《流行美语》

TED演讲:为什么有这么多昆虫存在(2)

Insect exoskeletons also work like body armor, 昆虫的外骨骼就像保护身体的盔甲一样 protecting insects against the outside world and helping them cope with habitats that other creatures can't. 抵御外部环境的伤害，帮助它们应

发表于:2019-01-17 / 阅读(82) / 评论(0) 分类 TED演讲教育篇

英语听力：自然百科 生命之树

Sycomore figs are found throughout tropical Africa. In Southern Kenya they thrive along river banks. This is the story of one of those trees. Our African queen is a mature sycomore fig. She started life as a seed one hundred years ago. She provides f

发表于:2019-01-22 / 阅读(69) / 评论(0) 分类 自然百科2009年

VOA慢速英语20061024a

AGRICULTURE REPORT - Pumpkins for All SeasonsBy Jerilyn Watson Broadcast: Tuesday, October 24, 2006 This is the VOA Special English Agriculture Report. Conditions for growing pumpkins were poor in som

发表于:2019-01-30 / 阅读(76) / 评论(0) 分类 2006年慢速英语（十）月

花粉症大作战：远离鼻塞流涕

Don't let itchy eyes and a runny nose ruin your summer - here's some top tips to help you beat the sniffles and sneezes that come with hay fever. 不要让眼睛痛痒、鼻子堵塞毁了你的夏天。花粉症袭来之时，如下小贴士可以让你

发表于:2019-02-03 / 阅读(75) / 评论(0) 分类 阅读空间

Nearly 6 million children in U.S. have food allergy

LOS ANGELES, June 20 (Xinhua) -- About 8 percent of children, or nearly 6 million in the U.S., have a food allergy, a much higher rate than previously estimated, a new study suggests. Not only is this estimate higher than some previous research has r

发表于:2019-02-08 / 阅读(78) / 评论(0) 分类 英语新闻

GRE阅读的主题结构分析

新GRE阅读主要考验我们逻辑推理能力，在中国很少进行着方面的训练。逻辑推理能力在阅读中考察，从宏观上把握文章，抓住文章的主体结构是关键。下面为大家进行3种常见的GRE阅读主题结构

发表于:2019-02-17 / 阅读(64) / 评论(0) 分类 GRE英语

TED演讲 获奖青少年,科技在行动(6)

Hi everyone. I'm Naomi Shah, and today I'll be talking to you about my research involving indoor air quality and asthmatic patients. 大家好，我是劳伦霍奇，今天我要跟你们讲讲我关于室内空气质量和哮喘病人的研究。 1.

发表于:2019-02-21 / 阅读(71) / 评论(0) 分类 TED演讲教育篇
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