高表面张力区

40 Cohesion-tension Theory Atmospheric pressure can support a column of water up to 10 meters high. But plants can move water much higher; the sequoia tree can pump water to its very top more than 100 meters above the ground. Until the end of the ni

发表于:2018-11-28 / 阅读(319) / 评论(0) 分类 新概念优美背诵短文50篇

Atmospheric pressure can support a column of water up to 10 meters high. But plants can move water much higher; the sequoia tree can pump water to its very top more than 100 meters above the ground. U

发表于:2018-12-15 / 阅读(227) / 评论(0) 分类 新东方背诵文选

Even as adults we still enjoy blowing bubbles, dont we? If youve ever wondered why blowing on a thin film of soapy water creates bubbles, this is your lucky day. All liquids have a property called surface tension. Take water, for example. Water molec

发表于:2018-12-31 / 阅读(81) / 评论(0) 分类 英语听力文摘 English Digest

By Heda Bayron Hong Kong 05 August 2007 An aerial view of the Siachen Glacier, northwest of Jammu, India U.S. scientists say clouds of man-made haze that blanket southern and eastern Asia are helping accelerate the melting of the Himalayan glaciers.

发表于:2019-01-04 / 阅读(113) / 评论(0) 分类 2007年VOA标准英语(八月)

By Sonja Pace Diyarbakir, Turkey 01 November 2007 Turkey has just hosted an international conference on how best to stabilize Iraq despite being on an increasingly poor footing with its eastern neighbor. Ankara accuses Iraq of sheltering separatist K

发表于:2019-01-07 / 阅读(84) / 评论(0) 分类 VOA常速英语2007年(十一月)

By Alisha Ryu Nairobi 15 October 2007 Officials in the semi-autonomous region of Puntland in Somalia are warning that a full-scale war could break out within days between Puntland and its neighboring breakaway republic of Somaliland. The warning foll

发表于:2019-01-07 / 阅读(98) / 评论(0) 分类 2007年VOA常速英语(十月)

By Noel King Kigali 25 September 2007 Tensions are growing in eastern Democratic Republic of Congo, amid ongoing clashes between forces loyal to dissident General Laurent Nkunda and the Congolese army. But a United Nations military spokesman said Tue

发表于:2019-01-07 / 阅读(121) / 评论(0) 分类 2007年VOA标准英语(九月)

Cohesion-tension Theory Atmospheric pressure can support a column of water up to 10 meters high. But plants can move water much higher; the sequoia tree can pump water to its very top more than 100 meters above the ground. Until the end of the ninete

发表于:2019-01-08 / 阅读(85) / 评论(0) 分类 英语小短文

Russian and Georgian leaders traded accusations of failing to observe a key part of their cease-fire agreement Tuesday, as foreign ministers from NATO convened in Brussels to figure out how to respond to the conflict that erupted in Georgia's breaka

发表于:2019-01-13 / 阅读(112) / 评论(0) 分类 VOA标准英语2008年(八月)

U.S. Secretary of State Hillary Clinton embarks Wednesday on a two-week Asian tour that will take her to Vietnam, Cambodia, Malaysia, Papua New Guinea, New Zealand, Australia and China. The trip is expected to bolster Washington's ties with Asian all

发表于:2019-01-14 / 阅读(65) / 评论(0) 分类 VOA标准英语2010年(十)月

JUDY WOODRUFF: Now: sharks. Just saying the word can send shivers down the spines of some, but as Hari Sreenivasan found in this report, studying their skin could be key to fighting diease and is on the cutting edge of the larger push announced at th

发表于:2019-01-27 / 阅读(123) / 评论(0) 分类 PBS访谈健康系列

By Alisha Ryu Nairobi 02 January 2008 Ethnic tensions continue to run high in Kenya where there have been threats of revenge following the deaths on Tuesday of at least 30 children and adults who had taken refuge in a church in the Rift Valley town o

发表于:2019-01-30 / 阅读(90) / 评论(0) 分类 VOA标准英语2008年(一月)

WASHINGTON, June 23 (Xinhua) -- Last month was the hottest May since record keeping began in 1880, the U.S. National Oceanic and Atmospheric Administration (NOAA) said Monday. 图片1 The combined average temperature over global land and ocean surfac

发表于:2019-02-06 / 阅读(106) / 评论(0) 分类 英语新闻

New research suggests agriculture has greatly increased the amount of dust blowing off of West Africa, the world's largest source of atmospheric dust, and may have been one factor driving the decrease in rainfall in the region over the past several c

发表于:2019-02-07 / 阅读(157) / 评论(0) 分类 VOA标准英语2010年(七)月

The Most Valuable Employees: Tame Tensions 最宝贵的员工:缓解紧张的高手 4 Workplace Peacekeepers Who Get Attention 引起上司注意的4中职场调解员 Furloughs, layoffs, burdened bosses, and stressed coworkers: Tension can stifl

发表于:2019-02-07 / 阅读(85) / 评论(0) 分类 实用英语

如今,高端大气上档次已经成为众人耳熟能详的网络用语,凭借其无与伦比的受欢迎度,高端大气上档次一度位居十大网络用语的榜首。这句让无数互联网迷们捶足顿胸的潮流时尚用语,到底

发表于:2019-02-08 / 阅读(108) / 评论(0) 分类 英语口语

Cohesion-tension Theory Atmospheric pressure can support a column of water up to 10 meters high. But plants can move water much higher; the sequoia tree can pump water to its very top more than 100 meters above the ground. Until the end of the ninete

发表于:2019-02-17 / 阅读(76) / 评论(0) 分类 双语有声阅读

Chinese Ministry of National Defense has said recent incidents in the South China Sea are old tricks used to stir tensions and smear the reputation of Chinese armed forces. The Ministry spokesperson Yang Yujun made the remarks on Tuesday, in response

发表于:2019-02-18 / 阅读(133) / 评论(0) 分类 cctv9英语新闻2015年

如何在托福阅读中提取句子的主干?这样即抓住了阅读的重点,也节省了阅读时间。有些同学对于分析长难句并不是那么敏感,看到句子简化题可能就会有晕头转向的感觉,在这里给大家讲解一

发表于:2019-02-18 / 阅读(75) / 评论(0) 分类 托福英语

On our last program, we learned how water bugs manage to stand on the surface of a pond: The pads of their feet resist contact with the water just like wax paper does. This allows the bug to rest on the thin film of surface tension that naturally cov

发表于:2019-02-23 / 阅读(93) / 评论(0) 分类 英语时差8,16
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