日本成人片在线_久久免费精品视频_国产午夜精品久久久久久免费视_校花撩起jk露出白色内裤国产精品_av影片免费在线观看_国产小视频在线看_最新av免费在线观看_99久久99久久精品国产片_欧美成人猛片aaaaaaa_蜜桃免费网站一区二区三区

精英家教網 > 高中英語 > 題目詳情


Scientists in the United States have developed a method that may help to predict earthquakes earlier. They say it could give people who live in deadly earthquake areas enough warning to leave before an earthquake occurs.
Currently, the most modern systems for predicting earthquakes find them only a short time before the event. Like most strong earthquakes, Wenchuan earthquake in 2008 and Haiti earthquake in 2010 were not identified early enough for people to flee the area, killing hundreds and thousands of people.
But scientists who study earthquakes are reporting that new technology could measure very small changes in the Earth’s surface.
Scientists performed experiments along California’s San Andreas Fault, an area famous for its earthquakes. Highly sensitive electrical devices are placed about one kilometer below ground in two different places. The devices were able to measure even small changes in air pressure on the Earth’s surface. The scientists say such changes are caused when rocks pushed together, forcing air out of small cracks in the rock.
Two earthquakes hit the area in late 2005. The first took place on Dec.25. A smaller earthquake struck five days later. The scientists noted changes in the earth’s surface about ten hours before the first quake struck. That quake measured three in intensity(強度). They then found similar changes taking place two hours before the other quake struck five days later.
If additional tests confirm the changes are linked to earthquakes, the scientists believe their equipment could be used for early warning systems. A system that provides a warning signal ten hours before a major earthquake could help move people from the area and save lives.
The scientists now hope they can find earthquakes with even greater intensity by placing their equipment deeper in the ground.
71. What’s the best title for the passage?
A.A new way to help predict earthquakes.
B.The earthquakes in the world
C.A better understanding of earthquake
D.Scientists and modern systems of earthquakes
72.If the new method does work, _______.
A.fewer earthquakes will break out
B.rescue workers can save more buried people in ruins
C.a warning can be given at least ten days before the major earthquake
D.fewer people will be killed in an earthquake
73.According to the passage, the devices can predict the earthquake by______
reaching the center of the earthquake
detecting the temperature changes in the earth’s crust
measuring changes in air pressure on the Earth’s surface
recording sound waves under the ground
74.We can infer from the passage that ______.
the equipment is perfect enough to be used in practice
it’s unknown if greater earthquake can be predicted by the equipment
the deeper the equipment is placed, the more accurate the measurement is
the equipment has helped save many lives in the earthquake in Haiti .
75.How many earthquakes are mentioned in the passage?
A. One           B. Two           C. Three         D. Four


71---75   ADCBD 

解析

練習冊系列答案
相關習題

科目:高中英語 來源: 題型:閱讀理解

Batteries can power anything from small sensors to large systems. While scientists are finding ways to make them smaller but even more powerful, problems can arise when these batteries are much larger and heavier than the devices themselves. University of Missouri(MU) researchers are developing a nuclear energy source that is smaller, lighter and more efficient.

“To provide enough power, we need certain methods with high energy density(密度)”,said Jae Kwon, assistant professor of electrical and computer engineering at MU. “The radioisotope(放射性同位素) battery can provide power density that is much higher than chemical batteries.”

Kwon and his research team have been working on building a small nuclear battery, presently the size and thickness of a penny, intended to power various micro / nanoelectromechanical systems (M/NEMS). Although nuclear batteries can cause concerns, Kwon said they are safe.

“People hear the word ‘nuclear’ and think of something very dangerous,” he said, “However, nuclear power sources have already been safely powering a variety of devices, such as pace-makers, space satellites and underwater systems.”

His new idea is not only in the battery’s size, but also in its semiconductor(半導體). Kwon’s battery uses a liquid semiconductor rather than a solid semiconductor.

“The key part of using a radioactive battery is that when you harvest the energy, part of the radiation energy can damage the lattice structure(晶體結構) of the solid semiconductor,” Kwon said, “By using a liquid semiconductor, we believe we can minimize that problem.”

Together with J. David Robertson, chemistry professor and associate director of the MU Research Reactor, Kwon is working to build and test the battery. In the future, they hope to increase the battery’s power, shrink its size and try with various other materials. Kwon said that battery could be thinner than the thickness of human hair.

Which of the following is true of Jae Kwon?

A. He teaches chemistry at MU.

B. He developed a chemical battery.

C. He is working on a nuclear energy source.

D. He made a breakthrough in computer engineering.

Jae Kwon gave examples in Paragraph 4_________.

A. to show chemical batteries are widely applied.

B. to introduce nuclear batteries can be safely used.

C. to describe a nuclear-powered system.

D. to introduce various energy sources.

Liquid semiconductor is used to _________.

A. get rid of the radioactive waste

B. test the power of nuclear batteries.

C. decrease the size of nuclear batteries

D. reduce the damage to lattice structure.

According to Jae Kwon, his nuclear battery _______.

A. uses a solid semiconductor

B. will soon replace the present ones.

C. could be extremely thin

D. has passed the final test.

The text is most probably a ________.

A. science news report  B. book review

C. newspaper ad    D. science fiction story

PART FOUR   WRITING (45%)

查看答案和解析>>

科目:高中英語 來源: 題型:

The fact has worried many scientists ______ the earth is becoming warmer and warmer these years.

A. what          B. which         C. that       D. though

查看答案和解析>>

科目:高中英語 來源: 題型:閱讀理解

    People diet to look more attractive. Fish diet to avoid being beaten up, thrown out of their social group, and getting eaten as a result. That is the fascinating conclusion of the latest research into fish behavior by a team of Australian scientists.

The research team have discovered that subordinate fish voluntarily diet to avoid challenging their larger competitors. “In studying gobies we noticed that only the largest two individuals, a male and female, had breeding(繁殖) rights within the group," explains Marian Wrong. “All other group members are nonbreeding females, each being 5-10% smaller than its next largest competitor. We wanted to find out how they maintain this precise size separation."

The reason for the size difference was easy to see. Once a subordinate fish grows to within 5-10% of the size of its larger competitor, it causes a fight which usually ends in the smaller goby being driven away from the group. More often than not, the evicted fish is then eaten up.

It appeared that the smaller fish were keeping themselves small in order to avoid challenging the boss fish. Whether they did so voluntarily, by restraining how much they ate, was not clear. The research team decided to do an experiment. They tried to fatten up some of the subordinate gobies to see what happened. To their surprise, the gobies simply refused the extra food they were offered, clearly preferring to remain small and avoid fights, over having a feast.

 The discovery challenges the traditional scientific view of how boss individuals keep their position in a group. Previously it was thought that large individuals simply used their weight and size to threaten their subordinates and take more of the food for themselves, so keeping their competitors small.

While the habits of gobies may seem a little mysterious. Dr. Wong explains that understanding the relationships between boss and subordinate animals is important to understanding how hierarchical(等級的) societies remain stable.

The research has proved the fact that voluntary dieting is a habit far from exclusive to human.”As yet, we lack a complete understanding of how widespread the voluntary reduction of food intake is in nature," the researchers comment. “Data on human dieting suggests that, while humans generally diet to improve health or increase attractiveness, rarely does it improve long-term health and males regularly prefer females that are fatter than the females' own ideal."

65 When a goby grows to within 5-10% of the size of its larger competitor, it ______.

A. faces danger       B. has breeding rights

C. eats its competitor     D. leaves the group itself

66. The underlined words “the evicted fish" in Paragraph 3 refer to _____.

A. the fish beaten up       B. the fish found out

C. the fish fattened up     D. the fish driven away

67 The experiment showed that smaller fish ____.

A. fought over a feast        B. went on diet willingly

C. preferred some extra food  D. challenged the boss fish

68. What is the text mainly about?

A. Fish dieting and human dieting.

B. Dieting and health.

C. Human dieting.

D. Fish dieting. 

查看答案和解析>>

科目:高中英語 來源: 題型:閱讀理解

What makes a person a scientist? Does he have ways or tools of learning that are different from those of others??The answer is“no”.It isn't the tools a scientist uses but how he uses these tools which makes him a scientist .You will probably agree that knowing how to use a power is important to a carpenter(木匠).You will probably agree,too, that knowing how to investigate(調查),how to discover information ,is important to everyone. The scientist ,however ,goes one step further ;he must be sure that he has a reasonable answer to his questions and that his answer he gets to many questions is into a large set of ideas about how the world works.?

The scientist's knowledge must be exact .There's no room for half right or right just half the time. He must be as nearly right as the conditions permit .What works under one set of conditions at one time must work under the same conditions at other times. If the conditions are different ,any changes the scientist observes in a demonstration(實證)must be explained by the changes in the conditions. This is one reason why investigations are important in science .Albert Einstein ,who developed the Theory of Relativity ,arrived at this theory through mathematics. The accuracy(正確性)of his mathematics was later tested through investigation. Einstein's ideas were proved to be correct .A scientist uses many tools for measurements .Then the measurements are used to make mathematical calculations(計算)that may test his investigations.

1.What makes a scientist according to the passage??

A.The tools he uses.

B.His ways of learning.?

C.The way he uses his tools.

D.The various tools he uses.?

2.“...knowing how to investigate ,how to discover information ,is important to everyone.”The writer says this to show_______.?

A.the importance of information

B.the difference between scientists and ordinary people?

C.the importance of thinking

D.the difference between carpenters and ordinary people?

3.A sound scientific theory should be one that_______.?

A.works under one set of conditions at one time and also works under the same conditions at other times?

B.leaves no room for improvement?

C.doesn't allow any change even under different conditions?

D.can be used for many purposes?

4.What is the main idea of the passage??

A.Scientists are different from ordinary people.?

B.The Theory of Relativity.?

C.Exactness is the core(核心)of science.?

D.Exactness and way of using tools are the keys to making of a scientist.?

 

查看答案和解析>>

科目:高中英語 來源:2012-2013學年河北省邢臺一中高二第三次月考英語試卷(帶解析) 題型:單選題

Nowadays,scientists are working hard to find a best way of treating addictions ________ drugs.

A.ofB.inC.onD.to

查看答案和解析>>

同步練習冊答案
av在线网址观看| 91精品国产综合久久精品麻豆| 国产91色综合久久免费分享| 亚洲福利久久| 99视频精品全部免费在线视频| 精品精品国产毛片在线看| 欧美国产日韩电影| 182在线视频观看| 亚洲成人国产精品| 永久91嫩草亚洲精品人人| 果冻天美麻豆一区二区国产| 欧美aaa在线观看| 国产一区二区三区毛片| 亚洲精品二三区| 精品美女被调教视频大全网站| 欧美日韩不卡在线| 精品视频一区二区三区免费| 在线观看一区日韩| 在线免费视频一区二区| 日韩欧美精品免费在线| 亚洲午夜在线视频| 亚洲资源中文字幕| 夜夜精品浪潮av一区二区三区 | 久久免费视频在线| 久久亚洲一区二区三区四区五区高| 亚洲一级免费视频| 伊人久久五月天| 一本色道久久综合亚洲精品小说 | www.日本一区| 国产精欧美一区二区三区白种人| 亚洲精品久久久久久宅男| 色噜噜狠狠永久免费| 天天操狠狠操夜夜操| 91看片破解版| 日本人添下边视频免费| www.av欧美| xxxxx99| 国产又黄又爽又无遮挡| 久久视频免费在线观看| 亚洲不卡在线视频| 亚洲在线免费观看视频| 性中国古装videossex| 欧美一级特黄aaaaaa| 91网页在线看| 噜噜噜噜噜在线视频| 在线免费观看黄色av| 中文在线字幕免费观看| av日韩亚洲| 国产精品成人**免费视频| 哺乳一区二区三区中文视频| 精品国产一区二区三区久久久蜜臀| 99国产精品免费视频观看| 欧美区亚洲区| 青青草91视频| thepron国产精品| 日本一区二区久久| 亚洲v中文字幕| 欧美日韩高清影院| 日韩精品中文字幕在线播放| 欧美成人h版在线观看| 欧美一二三视频| 92看片淫黄大片看国产片| 免费h精品视频在线播放| 天天干天天色天天爽| 欧美一级片中文字幕| 免费黄色在线播放| 911国产在线| 国产一区二区视频免费| 懂色av蜜臀av粉嫩av分享吧| 国自产拍在线网站网址视频| 俺来俺也去www色在线观看| 国产一区二区三区朝在线观看| 91夜夜蜜桃臀一区二区三区| 中文字幕一区二区三区乱码图片| 日本vs亚洲vs韩国一区三区二区| 久久噜噜亚洲综合| 精品欧美一区二区三区| 日韩欧美国产综合| 欧美大奶子在线| 亚洲一区二区少妇| 五月天综合婷婷| 视频免费1区二区三区| 中国1级黄色片| 中文字幕av网站| 亚洲高清福利| 成人日韩在线| 超碰成人久久| 九九热在线视频观看这里只有精品| 国产日韩欧美精品综合| 日本高清不卡视频| 中文字幕久精品免费视频| 国产欧美久久久久久| 亚洲欧美99| 色18美女社区| 国产一级免费观看| 香蕉av一区二区三区| 乱插在线www| 日韩激情网站| 日本大胆欧美人术艺术动态 | 一区二区三区四区亚洲| 亚洲第一页在线| 欧美中文在线视频| 色女人综合av| 亚洲高清在线不卡| 日韩手机在线观看| 天堂av中文在线资源库| 在线成人视屏| 欧美伊人久久| 2023国产精品| 91精品国产综合久久福利软件 | 国产日韩欧美精品在线观看| 国产精品成人无码专区| 天天综合久久综合| 3p视频在线观看| 国产厕拍一区| 蜜臀精品久久久久久蜜臀| 亚洲激情校园春色| 亚洲情综合五月天| 亚洲a中文字幕| 国产日韩一区二区在线| 亚洲欧美小视频| 福利在线国产| 国产精品视频一区二区三区综合| 亚洲少妇一区| 夜夜爽夜夜爽精品视频| 中文字幕精品网| 久久久一本精品99久久精品66 | 色偷偷9999www| 国产偷国产偷亚洲高清97cao| 激情婷婷综合网| 精品处破女学生| 日本在线一二三| 国产一区二区三区免费观看在线| 三级在线观看一区二区| 精品久久久久久久久久国产 | 久久国产精品99久久人人澡| 岛国av在线不卡| 欧美激情videos| 国产午夜精品视频一区二区三区| 日本免费www| 小香蕉视频在线| 66精品视频在线观看| 激情六月婷婷久久| 欧美在线观看一区二区| 日产日韩在线亚洲欧美| www.浪潮av.com| 天天综合网入口| 国产盗摄在线观看| 欧美日韩视频| 亚洲综合清纯丝袜自拍| 欧美激情视频一区二区| 在线观看污视频| 九九九久久久久| 色的视频在线免费看| 欧美激情成人| 亚洲人成影院在线观看| 欧美理论电影在线播放| 99热一区二区三区| 污视频免费在线观看网站| 亚洲黄色毛片| 成人不卡免费视频| 成人国产电影网| 99在线精品视频在线观看| 亚洲精品乱码久久久久久黑人| 中文字幕最新精品| 中文一区一区三区免费| 午夜爽爽爽男女免费观看| 春暖花开成人亚洲区| 婷婷久久一区| 亚洲国产一二三| 欧美一区亚洲一区| 亚洲国产日韩欧美在线观看| 国产精品无码免费播放| 91视频成人| 日本午夜大片a在线观看| 三级无遮挡在线观看| 欧美日韩性在线观看| 中文字幕一区二区三区乱码在线 | 在线中文免费视频| av成人毛片| 欧美日本精品一区二区三区| 成人看片视频| 91资源在线播放| 日本电影全部在线观看网站视频| 欧美婷婷在线| 91九色最新地址| 99久久久精品免费观看国产| 久久日免费视频| 色图在线观看| 久久99在线观看| 日韩精品视频在线播放| 91精品国产吴梦梦| 日韩人妻精品中文字幕| 99久久99九九99九九九| 91看片淫黄大片一级在线观看| 久久综合伊人77777蜜臀| 国产成人a亚洲精v品无码| 99久久亚洲精品日本无码| 欧美a大片欧美片| 一区二区在线观看视频在线观看| 国产精品www| av直播在线观看| 国产剧情在线| 久久99日本精品| 色先锋资源久久综合5566| 国产极品美女高潮无套久久久 | 久久se这里有精品| 日韩中文字幕亚洲| 奇米影音第四色| 调教在线观看| 黄色一区二区三区四区| 日韩欧美精品在线视频| 成人免费在线视频播放| 亚洲伦理在线观看| 91精品观看| 精品美女一区二区| 欧美视频在线观看视频| 熟妇人妻中文av无码| 你懂的国产精品| 精品国产三级a在线观看| 久久久久久av无码免费网站下载| a毛片在线免费观看| 日韩在线中文| 欧美日精品一区视频| 亚洲第一页在线视频| 国产人妻精品一区二区三| 精品国产一区二区三区| 欧美性猛交xxxxxxxx| 伊人久久av导航| 精品国产亚洲AV| 亚洲欧美文学| 亚洲福利在线视频| 免费看污污网站| 成人免费在线观看| 国产精品一区二区男女羞羞无遮挡| 欧美成人精品在线| 黄色短视频在线观看| 日韩大片免费观看| 国产精品福利一区| 国产伦精品一区二区三区在线| 日韩av片在线播放| 香蕉一区二区| 欧美一卡二卡在线| 亚洲色成人一区二区三区小说| 天天av综合网| 激情六月婷婷综合| 人人做人人澡人人爽欧美| 九九这里只有精品视频| 日韩一级淫片| 色94色欧美sute亚洲线路一久| 在线视频一区观看| 满满都是荷尔蒙韩剧在线观看| 日本不卡免费在线视频| 久久久噜噜噜久久| 国产又粗又猛又爽又黄的视频小说| 久久女人天堂| 精品久久久久久久中文字幕 | 6080日韩午夜伦伦午夜伦| 免费在线观看视频a| 国产亚洲依依| 99久久免费国产| 97人摸人人澡人人人超一碰| 日本视频免费观看| 自由日本语亚洲人高潮| 色妞色视频一区二区三区四区| 无码成人精品区在线观看| 秋霞国产精品| 一本色道a无线码一区v| 国产69精品久久久久999小说| 黄色软件在线| 久久久精品天堂| 免费观看成人在线| 天堂av手机版| 国产精品一区二区在线看| 国产日韩在线视频| 中文字幕一二区| 美女精品在线| 日本成人精品在线| 中文字幕69页| 亚洲精品社区| 午夜精品久久久久久久99黑人| 青青草原免费观看| 色135综合网| 最近2019中文免费高清视频观看www99 | 都市激情久久| 欧美大黄免费观看| 中文字幕1区2区| 日韩av懂色| 欧美剧在线免费观看网站| 鲁一鲁一鲁一鲁一av| 亚洲精品一级二级| 欧美日韩精品三区| 黄大色黄女片18第一次| 日本一区二区三区视频在线| 91国偷自产一区二区开放时间 | 999精品免费视频| 国产精品视频一区视频二区| 日韩三级中文字幕| 东京热av一区| 欧美18xxxx| 中文字幕亚洲欧美日韩2019| 国产激情无码一区二区三区 | 久久久国产成人精品| 精品久久免费视频| 国内在线观看一区二区三区| 国内精品国产三级国产在线专| 91玉足脚交嫩脚丫在线播放| 裸体一区二区| 亚洲一区国产精品| 传媒在线观看| 欧美国产激情二区三区| 400部精品国偷自产在线观看| 最新日本在线观看| 欧美性猛交xxxx乱大交蜜桃| www.超碰97.com| 亚洲欧美日本国产| 国产一区二区三区在线免费观看| 性色av无码久久一区二区三区| 国产精品草草| 国产精品免费看久久久香蕉| 欧洲成人一区二区三区| 91老师片黄在线观看| 麻豆一区二区三区在线观看| 成人ssswww在线播放| 91精品婷婷国产综合久久竹菊| 国产亚洲色婷婷久久99精品91| 欧美日韩在线播放视频| 久久久久久久久久久成人| 国产又黄又爽视频| 99re热这里只有精品视频| 亚洲一区二区三区涩| 里番在线播放| 日韩欧美一级精品久久| 国产wwwwxxxx| 亚洲欧美视频一区二区三区| 粉嫩av一区二区三区免费观看| 国产粉嫩一区二区三区在线观看 | 欧美午夜精品免费| 亚洲av片不卡无码久久| 国产精品久久久久久影院8一贰佰 国产精品久久久久久麻豆一区软件 | 亚洲第一天堂网| 久久精品男人的天堂| 国产aaa一级片| 91精品尤物| 久久久久日韩精品久久久男男| av av片在线看| 国产精品视频观看| 美女网站色免费| 要久久电视剧全集免费| 欧洲成人免费aa| 97在线资源| 偷拍一区二区三区| 国产女人18毛片水真多18| 国内自拍视频一区二区三区| www.久久爱.cn| 羞羞的视频在线观看| 精品人在线二区三区| 日韩欧美中文字幕一区二区| 国产成人三级在线观看| 欧美中文字幕在线观看视频| 91精品国产一区二区在线观看| 久久久国产成人精品| www夜片内射视频日韩精品成人| 国产精品美女一区二区三区| 亚洲妇熟xx妇色黄蜜桃| 欧美顶级大胆免费视频| 亚洲综合社区网| 性爱视频在线播放| 日韩成人中文字幕| 性色av一区二区三区四区| 久久久久国产精品麻豆ai换脸 | 国产三区精品| 欧美gv在线观看| 亚洲视频一区二区三区| 国产精品毛片久久久久久久av| 最新日韩在线视频| www.17c.com喷水少妇| 国产精品久久久久毛片大屁完整版 | av网站在线不卡| 国产精品久久观看| 精品国产一区二区三区免费| 2022成人影院| 欧美黄色片在线观看| 性色视频在线观看| 欧美酷刑日本凌虐凌虐| 日本中文字幕免费观看| 久久久久久亚洲综合影院红桃| www.污污视频| 日韩亚洲精品在线| 中日韩在线视频| 成人自拍在线| 国产精品一区久久久| 岛国毛片av在线| 俺也去精品视频在线观看| а√最新版地址在线天堂| 欧美日韩国产片| 欧美 日韩 精品| 亚洲欧美色综合| 91狠狠综合久久久| 91在线码无精品|