un. 无效假设；零假设；虚假设；检验假设
[网络] 虚无假设

大学英语自学教程上UNIT10

[00:04.49]Scientific Attitudes [00:06.97]科学的态度 [00:09.46]Science had its beginning when man started asking questionsabout his environment. [00:14.18]科学起源于人类开始对自身环境产生疑问的时候. [00:18.91]He wondered where the sun went at night an

发表于:2018-12-04 / 阅读(77) / 评论(0)

大学英语自学教程上

托福听力短文 I-03-1

(woman) In our lab today, we'll be testing the hypothesis that babied can count as early as five months of age. The six babies here are all less than six months old. You'll be watching them on closed-circuit TV and measuring their responses. The exp

发表于:2018-12-05 / 阅读(73) / 评论(0)

托福听力短文

生活大爆炸第一季第二集_2The Big Bran Hypothesis

生活大爆炸第一季第二集_2The Big Bran Hypothesis -Leonard: Come on, we should go. 快点，我们得走了。 -Sheldon: Hang on. 等一下。 -Leonard: What are you doing? 你在干嘛? -Sheldon: I'm straightening up. 我在清理。 -Leona

发表于:2018-12-07 / 阅读(66) / 评论(0)

生活大爆炸第一季

生活大爆炸第一季第二集_1The Big Bran Hypothesis

生活大爆炸第一季第二集_1The Big Bran Hypothesis -Howard: But does it have peanut oil? 但有花生油吧? -Leonard: I'm not sure. 我不清楚。 Everyone keep an eye on Howard in case he starts to swell up. 你们每个人都盯着Howard，

发表于:2018-12-07 / 阅读(56) / 评论(0)

生活大爆炸第一季

柯灵思英语-英语听力高手36

发表于:2018-12-07 / 阅读(64) / 评论(0)

柯灵思英语

英语四级词汇与语法精选特训(1)

1. Would you mind ____ quiet for a moment? I'm trying ____ of form. A) keeping,to fill out B) keeping,filling out C) keep,to fill out D) to keep,to fill out 2. Mercury is different from other industrial metals ____ it is a liquid. A) because of B) wh

发表于:2018-12-17 / 阅读(48) / 评论(0)

大学四六级阅读

托福阅读：读懂句子，攻克托福阅读简化题

托福阅读的问题，归根结底就是读不懂：文章读不懂，或者问题和选项读不懂。一切所谓的解题技巧也是为了帮助我们读懂，而不是在读不懂文章的基础上仍然能够解题。在一篇700多单词的文

发表于:2018-12-19 / 阅读(69) / 评论(0)

托福英语

趣味青春英语电台第134期:Off the record

Idiom: Off the record 非正式的，不记录下来的事 Hit the book: Likelihood Strain Incorporate Well-being Complement Be consistent with Hypothesis

发表于:2018-12-27 / 阅读(77) / 评论(0)

趣味青春英语

为什么总感觉睡不够?

人的一生中，将近三分之一的时间是用于睡觉的。刚出生的婴儿几乎每天要睡20个小时；即使成年后，每夭至少要睡 6～7小时。不管睡眠时间长短如何，睡觉看来是人必不可少的行为。这一点

发表于:2018-12-27 / 阅读(67) / 评论(0)

英语听力广播—Listening

Solving problems Scientifically

LESSoN TEN (B) TEXT B Solving problems Scientifically There are scientific ways in which man solves problems. once his curiosity has been aroused, he uses certain methods and procedures to obtain new

发表于:2018-12-30 / 阅读(123) / 评论(0)

自考英语（一）78讲

60秒科学:Do Rainforests Create Rain?

Rainforests exist because it rains a lot and that makes the forests grow, right? Well, not so fast. What if its not the rain that makes the forestswhat if its the forests that actually generate the rain? Thats the contention of a paper in BioScience

发表于:2019-01-02 / 阅读(138) / 评论(0)

60秒科学

SSS 2009-05-07

Rainforests exist because it rains a lot and that makes forests grow, right? Well, not so fast. What if its not the rain that makes the forests? What if its the forests that actually generate the rain? That is the contention of a paper in BioScience

发表于:2019-01-08 / 阅读(97) / 评论(0)

Scientific American(五)月

ESL商务英语: ESL Podcast 288 – A Business Contract

ESL Podcast 288 A Business Contract GLOSSARY contract a written agreement between two or more people, businesses, ororganizations* Many cell phone companies make their customers sign a six-month or one-yearservice contract. party a person, business,

发表于:2019-01-18 / 阅读(211) / 评论(0)

2007年ESL之商务英语

英语听书《海底两万里》第14期第2章正与反(3)

The Chassepot rifle led to the torpedo, and the torpedo has led to this underwater battering ram, 机枪之后有水雷，水雷之后有潜水冲击机， which in turn will lead to the world putting its foot down. At least I hope it will. 然后一又

发表于:2019-01-27 / 阅读(61) / 评论(0)

《海底两万里》中英双语有声读物

Step by Step 3000 第1册 Unit8:Trends in Economics(4)

Part 4. Short talks on listening skills. Listen to the short talk entitled Thinking ahead of the speaker anticipation helps. Some important words are taken away from the written passage, supply the missing words. Thinking ahead of the speaker anticip

发表于:2019-02-03 / 阅读(65) / 评论(0)

step by step 3000 第一册

Man United target has contract revoked

发表于:2019-02-08 / 阅读(87) / 评论(0)

英语新闻

Del Bosque warns of Italian threat in Euro 2012

MADRID, Dec. 2 (Xinhua) -- Spain coach Vicente del Bosque was cautious about his side's chances of success in the 2012 European Championship after the draw was held in Kiev on Friday. Spain travel to the competition, which will be held in Poland and

发表于:2019-02-18 / 阅读(53) / 评论(0)

英语新闻

【英语语言学习】宝贝们都在想什么

What is going on in this baby's mind? If you'd asked people this 30 years ago, most people, including psychologists, would have said that this baby was irrational, illogical, egocentric -- that he couldn't take the perspective of another person or un

发表于:2019-02-23 / 阅读(58) / 评论(0)

英语语言学习

备考托福阅读要有点“心机”

在托福阅读备考过程中，没有一点心机是不行的！我们在选资料，练真题，解题等方面都要有方法有技巧的进行，以下是小编这个心机girl给大家推荐的几点心机秘籍，助力大家早日取得托福阅

发表于:2019-03-04 / 阅读(119) / 评论(0)

托福英语

生活大爆炸第一季第二集_3The Big Bran Hypothesis

生活大爆炸第一季第二集_3The Big Bran Hypothesis -Penny：Hey, Raj. 嗨，Raj。 Hey, listen. 嘿，听着。 I don't know if you heard about what happened last night with Leonard and Sheldon, 我不知道你是否听说了，昨晚 Leonard和

发表于:2019-03-16 / 阅读(320) / 评论(0)

生活大爆炸第一季

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acceptable product

alligator grasses

anadimonia latigasciata

anisotropic exchange interaction