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By Gary Garriott Broadcast: September 15, 2003 This is Robert Covent with the VOA Special English Development Report. 1)Clay is found almost everywhere in the world. It is formed by the action of wind

发表于:2018-12-01 / 阅读(705) / 评论(0)

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by Jason Marshall Sometimes statistics* seems magical. Of course, there isnt really anything magical going onbut the fact that statistical methods can be used to pull useful information out of a hatful of messy data is, at a minimum, remarkable. And,

发表于:2018-12-07 / 阅读(185) / 评论(0)

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Todd: Trevor, do you like the beach? Trevor: I love the beach. The beach is great. Todd: OK. Why do you love the beach? Trevor: It's nice fresh air, beautiful water, you can play in the sand, and my hobby is surfing, so I like to go surfing. Todd: Oh

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CHAPTER NINE A View to a Death Over the island the build-up of clouds continued. A steady current of heated air rose all day from the mountain and was thrust to ten thousand feet; revolving masses of gas piled up the static until the air was ready to

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有声英语文学名著

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The Sound of the Shell The boy with fair hair lowered himself down the last few feet of rock and began to pick his way towards the lagoon. Though he had taken off his school sweater and trailed it now from one hand, his grey shirt stuck to him and hi

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At last Jessie said, Lets do the dishes and go for a swim. Violet stood up on the sand and took her tray. She said, You know, I cant seem to forget Mr. Lee. He seems so interesting. And he comes past here every day with his dog, he says. Well see a l

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16 Mystery in the Sand

英语访谈对话 124 Beach Life

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Dad took Beth to the ocean. This was her first visit to the ocean. This was her first visit to the beach. This was the first time she saw the sandy beach. She loved the sand. She dug holes in the sand. She filled up the holes. She held the sand in he

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AMERICAN STORIES - The Sharks Were Hungry

AMERICAN STORIES - The Sharks Were Hungry By Dorothy Cottrell Broadcast: Saturday, October 09, 2004 Now the weekly Special English program American Stories. Our story today is called The Sharks Were H

发表于:2019-01-02 / 阅读(258) / 评论(0)

American Stories

Is Water Really on Mars?

A new study suggests that dark markings on the planet Mars represent sand not water. Research in 2015 had suggested that lines on some Martian hills were evidence of water. Yet American scientists now say these lines appear more like dry, steep flows

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DEVELOPMENT REPORT - Working With Clay: A How-to GuideBy Gary Garriott Broadcast: Monday, January 09, 2006 I'm Steve Ember with the VOA Special English Development Report. Clay is found almost everywh

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Poyang Lake, which connects to the Yangtze River near the city of Jiujiang, is the largest freshwater lake in China. The area of the lake fluctuates dramatically between the wet and dry seasons, influencing water levels downstream. However, the lake

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Tie

A man was crawling across the Desert dying of thirst, when a camel raced up and stopped. An Arab jumped down, opened a suitcase and said, Would you like to buy a tie?No,said the man, 'I need water, do you have water?' 'No,' said the Arab,' but I do h

发表于:2019-02-01 / 阅读(189) / 评论(0)

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统计学名词词汇 population 母体 sample 样本 census 普查 sampling 抽样 quantitative 量的 qualitative/categorical 质的 discrete 离散的 continuous 连续的 population parameters 母体参数 sample statistics 样本统计量 descriptive statistics 叙述统计学 infer

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The Dujiangyan Dam, 45km north of Chengdu, is an ancient technological wonder of the country. More than 2000 yers ago, Li Bing(250-200BC), as a local governor of the Shu State, designed this water control and irrigation dam and organized thousands of

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统计学名词英语单词 population 母体 sample 样本 census 普查 sampling 抽样 quantitative 量的 qualitative/categorical 质的 discrete 离散的 continuous 连续的 population parameters 母体参数 sample statistics 样本统计量 descriptive statistics 叙述统计学 i

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发表于:2019-02-06 / 阅读(156) / 评论(0)

原版英语对话1000个

【英文短篇小说】I AM THE DOORWAY

Richard and I sat on my porch, looking out over the dunes to the Gulf. The smoke from his cigar drifted mellowly in the air, keeping the mosquitoes at a safe distance. The water was a cool aqua, the sky a deeper, truer blue. It was a pleasant combina

发表于:2019-02-16 / 阅读(165) / 评论(0)

英文短篇小说

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left-skewed 左偏 negative-skewed 负偏 right-skewed 右偏 positive-skewed 正偏 contingency table 列联表 sampling distribution (of a statistic)(某个统计量的) 抽样分布point estimate 点估计值 point estimator 点估计式 unbiased

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【英语时差8,16】湿沙为什么黏在一起？（上）

At the end of the day, just before going to bed, you go through the house to do an energy check.You make sure all the lights are off, the oven is cold, the iron is unplugged. So now youve done your duty as a good energy conserver, right? Not so fast.

发表于:2019-03-06 / 阅读(200) / 评论(0)

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