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

Construction workers in Southern California have made a wild discovery. They were digging at a building site in San Timoteo Canyon (峽谷) when they unearthed hundreds of ancient animal fossils. Researchers say the bones hold important clues about the history of the region.
Nearly 1, 500 fossils were recovered from the dusty canyon. The remains are about 1.4 million years old. They include the bones of a new species of deer, several small rodents (嚙齒目動物) and more. A giant cat fossil was also found. Scientists believe the animal was an ancestor of the saber- toothed tiger. Signs of plant life were uncovered as well.
“This is a huge find,” says Rick Greenwood, a scientist studying the site. “I don’t think most people had any idea that those types of animals were wandering around here more than a million years ago.”
San Timoteo Canyon is located about 85 miles from Los Angeles. The area of the canyon where the fossils were found was once part of a green river valley. Today, the region is dry and plant life is rare.
Most of the fossils are well preserved. Experts say a muddy lake bed may have trapped thirty animals that wandered over for a drink. The mud helped to protect the animal fossils.
The remains are a million years older than those discovered at the famous La Brea Tar Pits in Los Angeles. Scientists studying the bones will be able to learn more about how the animals adapted to changes in the environment.
“We have a confused view of what this time period was like, ” says another scientist. “A discovery like this could really be an important contribution.”
About 35 different animal species are represented in the fossil collection. Scientists began removing bones from the site last fall. The project was completed this summer. Starting next year, the fossils will be on display at the Western Science Center in the nearby city of Hemet, California.
【小題1】
What does the passage mainly focus on?

A.The secret of ancient animals’ deaths.
B.The preparation for a future fossil exhibition.
C.A great discovery of fossils.
D.The history of San Timoteo Canyon.
【小題2】
From what Rick says, we know ________. (原創)
A.fossils were discovered in the canyon for the first time.
B.the canyon in ancient times was quite different.
C.more research work will be carried on in the canyon.
D.the river water helped to protect the animal fossils.
【小題3】
Compared to the discovery at the La Brea Tar Pits, the canyon-involved fossils _______.
A.are far olderB.include more species
C.are better preservedD.make experts more confused
【小題4】
What do we know about the fossils from the passage?
A.All of them are of new species.
B.Some of them have been destroyed
C.They were looked for under experts’ guidance.
D.They will be on show in the near future.


【小題1】C
【小題1】C
【小題1】A
【小題1】D

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

If you are lost in the mountains, stay calm in the face of darkness, loneliness, and the unknown. It will greatly increase your chances of survival(生存). Many people think that preparing necessary equipment and knowing how to use it are very important, but actually eighty percent of mountain survival is your reaction to fear.

 

Find a hiding place.

Unnecessary labor will make you sweat and make you cold. Find a hiding place around you before trying to start your own construction. If you are in a snow-covered area, you may be able to dig a cave in deep snow for protection from the wind. You should try to hide yourself in the middle of the mountain if possible. Stay out of the valleys-cold air falls, and the valley floor can be the coldest area on the mountain.

 

Signal rescuers for help.

The best time to signal rescuers is during the day. Signal for help from the highest point possible-it will be easier for rescuers to see you, and any sound you make will travel farther. If you take a box of matches and a space blanket(a special blanket for traveling), build three smoky fires and put your blanket-gold side facing out-on the ground.

 

Do not walk away.

   It will make finding you more difficult, as search teams will be trying to follow your path and may miss you if you have gone off in a different direction. Searchers often end up finding a car with no one in it.

 

If you get frostbite(凍傷), do not rewarm the affected area until you’re out of danger.

    You can walk on frostbitten feet, but once you warm the area and can feel the pain, you will not want to walk anywhere. Try to protect the frostbitten area and keep it dry until you are rescued.

36.When lost in the mountains, you can increase your chances of survival if you ______.

       A.take a space blanket with you

       B.do more physical labor

       C.try to find a car immediately

       D.walk as far as possible to find help

37.According to the passage, people most probably fail to survive if they ______.

       A.do not take enough equipment

       B.stay in the middle of the mountain

       C.do not keep themselves warm

       D.stay in a snow-covered area

38.What can we infer from the passage?

       A.Don’t travel by yourself.

       B.Mountain traveling is dangerous.

       C.Don’t get frightened in danger.

       D.Avoid going to unfamiliar place.

 

 

查看答案和解析>>

科目:高中英語 來源:2012-2013學年浙江臨海白云高級中學高三第三次模擬英語卷(解析版) 題型:閱讀理解

What separates me from everyone else? The difference is not what clothes I wear or the music I listen to, but what I feel inside.

Ever since I was young, I have loved professional wrestling(摔跤). I woke up every Saturday to watch my favorite "Superstars." As I grew older, I got a lot of flak for watching this "fake" sport. My peers(同齡人) would laugh at me for following what was called a "man's soap opera." So, I put my love for wrestling on the shelf. Like everyone else, I wanted to be associated with the cool clique. I yearned to be invited to the parties of the in-crowd and hang out with the popular kids. I became pretty successful. Although my Friday evenings were busy with parties, I would still wake up early Saturdays to watch wrestling. It wasn't until freshman year that I realized I wasn't being myself.

That year, I tried many new things and activities and made new friends. In my town, football was the sport, so I decided to play football, thinking it might give me a head start in popularity. The team started with 48 athletes. At the end, there were 14 of us left. I stuck it out not because I liked it, but because I am not a quitter. That long season taught me a lesson: I wasn't a football player. More importantly, it taught me to be myself.

After that season, I went back to being a wrestling fan. I watched it religiously, no matter what insults were thrown my way. I came across a quote: "Don't Dream It, Be It." When I read this, my friend Dan had the same idea I had.

"What if we build a wrestling ring(拳擊場)?" we asked. We acquired the necessary wood and equipment for its construction. The following weekend, we met at his house. We saw our dream in a pile in his backyard. We worked from dawn to dusk to build our great establishment. By Sunday night, our mission was complete. Our hard work (combined with a little creativity) had paid off. We had a real ring. We decided to hold an "event." We practiced for hours, trying to improve every aspect of our wrestling ability. The date was May 24th. Our show had a start time of 9: 00 p.m. To our surprise, about one hundred family, friends and fans showed up to support us. It was the most important night of my life and a complete success. Since that time, we have held five shows with as many as two hundred and fifty people turning out. We continue to live this dream. We accomplished what we set out to do. We are now well known throughout school. When I walk down the halls, I am respected by my peers. Some are the same peers who ridiculed me for watching wrestling when I was younger. When they approach me, they often say, "Good match, Chris." I humbly say, "Thank you," knowing I did something I believed in.

As my senior year winds down, I'll remember all of my high school memories. But what will stick out most is the memory that I did something I loved, despite what everyone said or thought. I accomplished my goal. I lived my dream.

1.What makes the writer different from the others is __________.

A.the different sports he loves

B.the different clothes he wears and the different music he listens to

C.that he is younger than the others.

D.the different ideas he has

2.What does the underlined sentence in Paragraph 2 mean?

A.I practiced wrestling secretly in my spare time.

B.I put the clothes for wrestling on the shelf.

C.I decided to quit following wrestling.

D.I began not to watch wrestling on TV.

3.When the writer was a freshman, he ___________.

A.knew he couldn’t be a good football player  B.realized he was being himself

C.was still sociable                        D.built a wrestling ring

4.The writer built the wrestling ring in order to ________.

A.play football there                      B.make his dream realized

C.be a professional player                  D.have parties there.

5.What is the writer’s attitude towards his experience in high school?

A.Optimistic         B.Pessimistic         C.Doubtful          D.Surprised

 

查看答案和解析>>

科目:高中英語 來源:2012-2013學年安徽省黃山市高三第一次聯考英語試卷(解析版) 題型:閱讀理解

As the railroads and the highways shaped the American West in the past centuries, a new electrical generating(發電)and transmission (輸送) system for the 21st century will leave a lasting mark on the West, for better or worse. Much of the real significance of railroads and highways is not in their direct physical effect on the scenery, but in the ways that they affect the surrounding community. The same is true of big solar plants and the power lines that will be laid down to move electricity around.

The 19 th century saw land grants(政府撥地) offered to railroad companies to build the transcontinental railroads, leaving public land in between privately owned land. In much of the West, some of the railroad sections were developed while others remained undeveloped, and in both cases the landownership has presented unique challenges to land management. With the completion of the interstate highway system, many of the small towns, which sprang up as railway stops and developed well, have lost their lifeblood and died.

Big solar plants and their power lines will also have effects far beyond their direct footprint in the West. This is not an argument against building them. We need alternative energy badly, and to really take advantage of it we need to be able to move electricity around far more readily than we can now.

So trade-offs will have to be made. Some scenic spots will be sacrificed. Some species(物種) will be forced to move, or will be carefully moved to special accommodations. Deals will be struck to reduce the immediate effects.

The lasting effects of these trade-offs are another matter. The 21st century development of the American West as an ideal place for alternative energy is going to throw off a lot of power and money in the region. There are chances for that power and money to do a lot of good. But it is just as likely that they will be spent wastefully and will leave new problems behind, just like the railroads and the highways.

The money set aside in negotiated trade-offs and the institutions that control it will shape the West far beyond the immediate footprint of power plants and transmission lines. So let’s remember the effects of the railroads and the highways as we construct these new power plants in the West.

1.What was the problem caused by the construction of the railways?

A.Small towns along the railways became abandoned.

B.Land in the West was hard to manage.

C.Some railroad stops remained underused.

D.Land grants went into private hands.

2.What is the major concern in the development of alternative energy according to the last two paragraphs?

A.The use of money and power.

B.The transmission of power.

C.The conservation of solar energy.

D.The selection of an ideal place.

3.What is the author’s attitude towards building solar plants?

A.Disapproving.      B.Approving.         C.Doubtful.          D.Cautious.

4.Which is the best title for the passage?

A.How the Railways Have Affected the West

B.How the Effects of Power Plants Can Be Reduced

C.How Solar Energy Could Reshape the West

D.How the Problems of the Highways Have Been Settled

 

查看答案和解析>>

科目:高中英語 來源:2012-2013學年上海市虹口區高考一模英語試卷(解析版) 題型:信息匹配

Read the following text and choose the most suitable heading from A-F for each paragraph. There is one extra heading which you do not need.

PARIS

1.Paris, the capital and the largest city of the country, is in north central France. The Paris metropolitan area contains nearly 20% of the nation’s population and is the economic, cultural, and political center of France. The French government has historically favored the city as the site for all decision making, thus powerfully attracting nearly all of the nation’s activities.

2.Paris has grown steadily since it was chosen as the national capital in the late 10th century. With the introduction of the Industrial Revolution, a great number of people moved to the city from the country during the 19th century. The migration was especially stimulated by the construction of railroads, which provided easy access to the capital. After World War II more and more immigrants arrived.

3.The city is the centralized control point of most national radio and television broadcasting. It is a place of publication of the most prestigious (有威望的) newspapers and magazines and an international book publishing center. With more than 100 museums, Paris has truly one of the greatest concentrations of art treasures in the world. The Louvre, opened as a museum in 1793, is one of the largest museums in the world.

4.In the late 1980s about 4.1 million pupils annually attended about 47,000 elementary schools. In addition, about 5.4 million students attended some 11,200 secondary schools. Approximately 1.2 million students were enrolled annually at universities and colleges in France in the late 1980s. French centers of learning have served as academic models throughout the world.

5.Paris is the leading industrial center of France, with about one quarter of the nation’s manufacturing concentrated in the metropolitan area. Industries of consumer goods have always been drawn to Paris by the enormous market of the big population; and modern, high-technology industries also have become numerous since World War II. Chief manufactures are machinery, automobiles, chemicals and electrical equipment.

 

查看答案和解析>>

科目:高中英語 來源:2013屆福建省高二下學期期末考試英語試卷(解析版) 題型:單項填空

We tried ______ to persuade him to stay home, but at last, he went to the construction site despite his bad illness.

A.in case

B.in vain

C.in fact

D.in addition

 

查看答案和解析>>

同步練習冊答案
秋霞午夜在线观看| 色悠悠在线视频| 欧美午夜在线一二页| 精品久久ai电影| 一级片中文字幕| 国产三级三级看三级| 精品亚洲欧美日韩| 欧美激情啊啊啊| 911精品国产一区二区在线| 久久亚洲综合av| 国产亚洲精品久久久久婷婷瑜伽| 久久久久亚洲精品中文字幕| 男人影院在线观看| 狠狠v欧美ⅴ日韩v亚洲v大胸| 国产寡妇亲子伦一区二区三区四区| 波多野结衣三级视频| 欧美一级中文字幕| 国产精品theporn88| 高清欧美一区二区三区| 亚洲国产成人在线播放| 亚洲一区二区四区蜜桃| 国产成a人无v码亚洲福利| 欧美精品福利| 国产精品99久久免费观看| 国产理论在线| 九一在线视频| 国产在线视频网站| sese在线视频| 日韩一级中文字幕| www.久久精品视频| 国偷自拍第113页| 国产精品久久久久久99| 精品人妻一区二区三区免费看 | 蜜桃久久av一区| 国产尤物久久久| 国产成人精选| xxxcom在线观看| 欧美新色视频| 国精产品乱码一区一区三区四区| av资源免费观看| 亚洲综合图片网| 欧美日韩中文字幕在线观看| a级在线观看视频| 中文字幕亚洲乱码| 熟妇无码乱子成人精品| 欧美女人性生活视频| 在线电影看在线一区二区三区| 91精品国产高清久久久久久91裸体| 欧美日韩福利视频| 这里只有精品丝袜| 亚洲精品久久视频| 亚洲欧美日韩在线播放| 久久综合一区二区| 国产精品乱人伦| 99免费精品视频| 韩国成人福利片在线播放| 性欧美videos另类喷潮| 午夜激情一区| 成人高清av| 国产亚洲精品美女久久久久久久久久| 日韩国产欧美| 国产成人3p视频免费观看| 亚洲成人99| 久久久久久美女精品| 亚洲少妇自拍| av男人天堂一区| 欧美日韩免费观看一区二区三区| 成人精品一区二区三区校园激情 | 久久国产精品99久久人人澡| 精品国产一区三区| 91精品在线影院| 45www国产精品网站| 欧美激情一二区| 日韩亚洲第一页| 亚洲人成电影网| 日韩电影中文字幕在线观看| 欧美美女15p| 国产女人18毛片水18精品| 日本久久久久久久久| 国内精品久久久久久中文字幕| 国产精品精品视频| 国产日韩av在线播放| 国产精品久久久久久超碰 | 日韩欧美99| 欧美18视频| 欧美 日韩 国产在线| 成年人午夜免费视频| 成人一区二区免费视频| 在线观看欧美一区二区| 北京富婆泄欲对白| 国产伦精品一区三区精东| 久久久久国产精品区片区无码| 日韩va亚洲va欧美va清高| 欧美交换国产一区内射| 精品视频一区二区在线观看| 欧美爱爱小视频| 精品欧美一区二区精品少妇| 好吊视频一二三区| av免费网站在线观看| heyzo在线欧美播放| 免费日韩电影| 深夜福利视频一区二区| 久久久加勒比| 国产区精品视频在线观看豆花| 国语精品一区| 久久国产福利国产秒拍| 亚洲欧美福利一区二区| 欧美日韩国产在线看| 欧美主播一区二区三区美女| 日韩一区二区三区四区五区六区| 精品成人在线观看| 日韩视频精品在线| 成人一区二区三区四区| 国产精品99久久免费黑人人妻| 三级一区二区三区| 国产jk精品白丝av在线观看| 美女的奶胸大爽爽大片| 色丁香婷婷综合久久| 99中文字幕一区| 丝袜老师在线| 99久久人爽人人添人人澡| 日韩av久操| 成人福利视频网站| 一区二区三区精密机械公司| 欧美日韩免费不卡视频一区二区三区| 波霸ol色综合久久| 日韩久久久久久久| 国产中文字幕一区二区| 国产美女明星三级做爰| 亚洲网友自拍| av第一福利在线导航| 91欧美日韩| 久草精品在线观看| 一本色道久久综合亚洲aⅴ蜜桃| 日韩精品一区二区在线| 萌白酱国产一区二区| 国产欧美一区二区| 超碰影院在线观看| 国产成人在线播放视频| 天天干天天干天天干| 韩日精品一区| 国产二区精品| 国产在线视频一区二区| 最新久久zyz资源站| 欧美日韩一区高清| 日韩在线高清视频| 亚洲国产综合自拍| 亚洲天堂网2018| 午夜精品一区二区三区视频| 日本福利在线观看| 欧美欧美黄在线二区| 日韩电影在线免费看| 国产婷婷一区二区| 欧美日本视频在线| 国产日韩精品在线| 中文字幕成人在线视频| 国产又粗又猛又色又| 日本高清在线观看wwwww色| 国语精品视频| 国产精品一品二品| 高跟丝袜一区二区三区| 91精品国产一区| 日韩福利二区| 国产香蕉在线视频| 日本一区二区免费高清视频| 国产精品亚洲二区在线观看| 亚洲18在线看污www麻豆| 中文字幕 视频一区| 成人在线观看黄色| 欧美日韩在线网站| 国产精品夜夜嗨| 精品久久久三级丝袜| 高清欧美性猛交xxxx| 欧美网站免费观看| 中文字幕美女视频| 天天干,夜夜操| eeuss鲁片一区二区三区| 91视频.com| 欧美一级大片在线免费观看| 91亚洲精品在线| 成人一区二区三区仙踪林| 亚欧洲精品视频| 成年人黄视频在线观看| 超碰97久久国产精品牛牛| 99精品久久99久久久久| 欧美美女网站色| 69久久夜色精品国产69| 999在线免费视频| 亚洲欧美另类视频| 精品一区毛片| 精品国产鲁一鲁一区二区张丽| 精品国产区一区二区三区在线观看| 穿情趣内衣被c到高潮视频| 中国女人特级毛片| 亚洲欧美自偷自拍| 国产麻豆一区二区三区精品视频| 一区二区三区不卡视频| 国产精品中文字幕久久久| 91黄色免费视频| 黄色av网站免费在线观看| 先锋影音国产精品| 成人sese在线| 久久天天躁狠狠躁夜夜av| 亚洲欧美日韩在线综合| 久久亚洲天堂网| 99综合99| 国产高清不卡一区| 欧美一三区三区四区免费在线看 | 日韩有码av| 亚洲444eee在线观看| 欧美黄网免费在线观看| 亚洲欧美日本一区二区| 免费一级毛片在线观看| 国产精品亚洲二区| 五月天中文字幕一区二区| 91丨九色丨国产| 国产一级aa大片毛片| 91麻豆精品国产综合久久久 | 久久www视频| 高h调教冰块play男男双性文| 99久久夜色精品国产亚洲1000部| 欧美日韩国产一级片| 国产奶头好大揉着好爽视频| 亚洲va欧美va| 这里视频有精品| 91丨九色丨尤物| 日本在线精品视频| 最新日韩免费视频| 超碰最新在线| 成人午夜在线播放| 亚洲欧美成人网| 伊人久久99| 国产乱叫456在线| 一本一道久久综合狠狠老| 亚洲国产精品久久久久婷婷884| 日本不卡高字幕在线2019| 欧美大尺度做爰床戏| 午夜精品久久久久久久爽| 羞羞色午夜精品一区二区三区| 日韩写真欧美这视频| 日韩欧美国产免费| 国产永久免费高清在线观看 | 亚洲国产精品三区| 日本免费中文字幕在线| 成人国产精品免费网站| 国产欧美日韩中文字幕| 五月天婷婷综合网| 少妇精品久久久| 欧美mv日韩mv亚洲| 亚洲日本va午夜在线影院| 日韩免费高清在线观看| 青青草原在线免费观看| 99国产精品免费网站| 欧美色综合网站| 日韩少妇内射免费播放18禁裸乳| 高清中文字幕一区二区三区| 欧美成人自拍| 亚洲精品综合久久中文字幕| 久久久久亚洲av无码麻豆| segui88久久综合9999| 亚洲天堂精品在线观看| 色女人综合av| 黄色av一级片| 亚洲二区三区不卡| 国产亚洲精品日韩| 国产一区视频免费观看| 国产美女在线观看| 久久66热re国产| 国产精品久久久久久久久借妻| 日本三级一区二区| 91精品国偷自产在线电影 | 久久久女人电视剧免费播放下载| 亚洲精品一区二区三区在线播放| 日韩动漫一区| 亚洲国产精品女人久久久| 不卡的一区二区| 欧美一区二区三区婷婷| 亚洲女同ⅹxx女同tv| 亚洲国产高清国产精品| 一不卡在线视频| 91在线视频免费观看| 免费成人深夜夜行视频| 在线观看入口黄最新永久免费国产| 成人午夜私人影院| 久久国产精品亚洲va麻豆| 亚洲AV无码成人精品区东京热| 欧美二区视频| 欧美精品福利在线| 色婷婷在线观看视频| 在线成人h网| 亚洲欧洲第一视频| 亚洲色成人网站www永久四虎| 精品综合久久88少妇激情| 亚洲第一免费网站| 人妻熟女aⅴ一区二区三区汇编| 性欧美18xxxhd| 91国偷自产一区二区三区成为亚洲经典| 视频一区视频二区视频三区高| 瑟瑟在线观看| 国产精品美女一区二区在线观看| 久久免费视频2| 国产精品扒开做爽爽爽的视频| 一区二区激情视频| 日本在线观看a| 亚洲成人三级| 一区二区三区影院| 亚洲欧美久久久久一区二区三区| 三级在线播放| 亚洲欧美一区二区久久| 91视频最新入口| 成人看片毛片免费播放器| 日韩欧美国产一区二区在线播放| 中国黄色a级片| 国产精品久久久久久麻豆一区软件| 久久福利网址导航| 都市激情久久久久久久久久久| 少妇户外露出[11p]| 日韩理论电影中文字幕| 蜜臂av日日欢夜夜爽一区| 国产精品极品在线| 黄色片网站免费在线观看| 久久这里只精品最新地址| 亚洲免费视频播放| 国产一区二区三区| 日韩欧美不卡| 欧美成人免费网| 一区二区免费| 亚洲天堂开心观看| 久久色在线播放| 国产高潮流白浆| 国产亚洲在线观看| 国产不卡一区二区在线观看| 日本成人一区| 大桥未久av一区二区三区| 无码人妻丰满熟妇区毛片蜜桃精品| 任你弄精品视频免费观看| 精品福利在线看| 亚洲女人在线观看| 伊人久久大香线蕉综合网站 | 日本一区福利在线| 久久久亚洲福利精品午夜| 国产成人精品亚洲精品色欲| 久久久水蜜桃av免费网站| 在线视频欧美日韩| 免费人成又黄又爽又色| 欧美va天堂| 91福利视频导航| 97人人在线| 欧美另类高清zo欧美| 国产白丝一区二区三区| 久久国产精品久久w女人spa| 久久国产欧美精品| √8天堂资源地址中文在线| 亚洲成色www8888| 久久狠狠高潮亚洲精品| www.在线成人| 欧美综合在线观看视频| 小说区图片区色综合区| 国产aaa精品| 国产www.大片在线| 欧美丰满美乳xxx高潮www| 久久久久久激情| 粉嫩aⅴ一区二区三区四区五区| 亚洲熟妇国产熟妇肥婆| 国产精品对白| 国产精品视频中文字幕91| 91福利在线视频| 日韩三级高清在线| 天天综合网入口| 久久久国产精华| 日韩视频一二三| gogo高清午夜人体在线| 亚洲精品白浆高清久久久久久| 亚洲天堂一区在线观看| 免费观看久久久4p| 亚洲天堂第一区| 成人激情自拍| 成人a视频在线观看| 在线免费色视频| 国产精品欧美一级免费| 亚洲一区二区偷拍| 欧美综合精品| 国产日韩精品视频| 爱看av在线入口| 久久影院资源网| 中文字幕av在线| 欧美一级欧美一级在线播放| 青青草av在线播放| 欧美激情一区二区三区全黄| 欧美女人性生活视频| 九九久久婷婷| 国产精品永久入口久久久| 精品亚洲综合| 日韩一区二区免费高清| 337p粉嫩色噜噜噜大肥臀| 东方欧美亚洲色图在线| 亚洲综合欧美在线| 91久久夜色精品国产九色| 国产精品av一区| 成人亚洲视频|