影音先锋制服丝袜_欧美 国产 日本_亚洲欧美综合自拍_亚洲最大成人在线观看_成人一区二区三_色呦呦网站入口_亚洲欧美高清在线_黄页网站在线看_一卡二卡在线观看_在线观看免费黄网站

精英家教網 > 高中英語 > 題目詳情

 (衡陽市八中2008屆高三模擬試題D篇)

Until recently, the “science of the future” was supposed to be electronics and artificial intelligence. Today it seems more and more likely that the next great breakthroughs in technology will be brought through a combination of those two sciences with organic chemistry and genetic engineering. This combination is the science of biotechnology.

Organic chemistry enables us to produce marvelous synthetic materials. However, it is still difficult to manufacture anything that has the capacity of wool to conserve heat and also to absorb moisture. Nothing that we have been able to produce so far comes anywhere near the combination of strength, lightness and flexibility that we find in the bodies of ordinary insects.

Nevertheless, scientists in the laboratory have already succeeded in “growing” a material that has many of the characteristics of human skin. The next step may well be “biotech hearts and eyes” which can replace diseased organs in human beings. These will not be rejected by the body, as is the case with organs from humans.

The application of biotechnology to energy production seems even more promising. In 1996 the famous science fiction writer, Arthur C. Clarke, many of whose previous predictions have come true, said that we may soon be able to develop remarkably cheap and renewable sources of energy. Some of these power sources will be biological. Clarke and others have warned us repeatedly that sooner or later we will have to give up our dependence on non-renewable power sources. Coal, oil and gas are indeed convenient. However, using them also means creating dangerously high levels of pollution. It will be impossible to meet the growing demand for energy without increasing that pollution to catastrophic levels unless we develop power sources that are both cheaper and cleaner.

It is attempting to think that biotechnology or some other “science of the future” can solve our problems. Before we surrender to that temptation we should remember nuclear power. Only a few generations ago it seemed to promise limitless, cheap and safe energy. Today those promises lie buried in a concrete grave in a place called Chernobyl, in the Ukraine. Biotechnology is unlikely, however, to break its promises in quite the same or such a dangerous way.

68.According to the passage, the science of the future is likely to be      .

A.biotechnology      B.electronics        C.genetic engineering         D.nuclear technology      

69.Organic chemistry helps to produce materials that are     .

A.as good as wool                                  B.as good as an insect’s body

C.better than natural materials           D.not as good as natural materials     

70.According to passage, it may soon be possible     .

A.to make something as good as human skin     

B.to make artificial hearts and eyes

C.to transplant human organs                  

D.to produce drugs without side effects

71.In 1996, Arthur C. Clarke predicted that______.

  A.the Chernobyl disaster would happen in two years

B.biological power sources would be put into use soon

C.oil, gas and coal could be repeatedly used in the future

D.dependence on non-renewable power sources would be reduced soon

72.What do we learn from the last paragraph?

  A.Biological power will keep all its promises

  B.Biotechnology can solve all our future energy problems

  C.Biological power is cheaper than nuclear power

  D.Biological power may not be as dangerous as nuclear power

答案  68.A  69.D  70.B  71.B  72.D

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

 (衡陽市八中2008屆高三模擬試題C篇)

Desert ants on their expeditions for food use clues to lead themselves in the homeward direction, but with few landmarks in the poor land, scientists have wondered how the insects always take the most direct route and know exactly how far to march.

The new study shows that counting their steps is an important part of the scheme.

Over the years, scientists have proposed several theories for how ants find their way home. One is that they do it like honeybees and remember visual clues, but experiments showed ants can travel in the dark. Another theory is that because ants run at a steady pace, they could time how long it took them to get to and fro. Other studies have shown that once ants find a good source of food, they teach other ants how to find it.

The ant “pedometer” technique was first proposed in 1904, but it remained untested until now. Scientists trained desert ants to walk along a straight path from their nest entrance to a feeder 30 feet away. If the nest or feeder was moved, the ants would break from their straight path after reaching the expected spot and search for their goal.

Try that on stilts. They glued stilt-like extentions to the legs of some ants to lengthen stride. The researchers shortened other ants’ stride length by cutting off the ants’ feet and lower legs, reducing their legs to stumps.

The ants on stilts took the right number of steps, but because of their increased stride length, marched past their goal. Stump-legged ants, meanwhile, fell short of the goal. After getting used to their new legs, the ants were able to adjust their pedometer.

64. What is the passage mainly about?  

A. Ants’ marching depends on counting their steps    

B. Desert ants know how to look for food                               

C. The secret for ants’ marching is known to all      

D. Ants know how far their food is

65. Apart from counting their steps, how can ants find their way?

A. By smelling                        B. By communicating     

C.By hearing                         D. By recognising wind

66.About the ant pedometer, we know that______.

  A. the technique is a recent discovery        

B. ants always walk along a straight path

  C. ants often change their nest to keep the pedometer

  D. the pedometer needs changing depending on new situations

67. According to the passage, the “stump-legged ants”_______.

  A. have longer legs than ones on stilts     B. have longer legs than the common ones

  C. need more steps to reach their goal     D. can arrive at their goal as usual

查看答案和解析>>

科目:高中英語 來源: 題型:閱讀理解

 (衡陽市八中2008屆高三模擬試題A篇)

Sacagawea, the only woman on the Lewis and Clark expedition into the American West, was the daughter of a Shoshone chief. Around the age of 12, Sacagawea was captured by Hidatsa Indians, an enemy of the Shoshones. She was then sold to a French-Canadian trapper named Toussaint Charbonneau and became one of his wives.

In November 1804, an expedition led by Meriwether Lewis and William Clark arrived there. Often called the Corps of Discovery, the expedition planned to explore newly acquired western lands and find a route to the Pacific Ocean. Lewis and Clark hired Charbonneau to serve as interpreter on their expedition. Even though she was pregnant with her first child, Sacagawea was chosen to accompany them.

She was killed at finding eatable plants. When a boat she was riding on turned over, she was able to save some of its goods, including important documents and supplies. She also served as a symbol of peace---a group traveling with a woman and a child were treated with less suspicion than a group of men alone.

Sacagawea also made a miraculous discovery of her own during the trip west. When they met a group of Shoshone Indians, she soon realized that its leader was actually her brother Cameahwait. It was through her that the expedition was able to buy horses from the Shoshone to cross the Rocky Mountains.

After reaching the Pacific coast in November 1805, they remained there until March of the following year. Sacagawea, her husband, and her son remained with the expedition on the return trip east until they reached the Mandan villages. And for her contribution to the Crops of Discovery, she was even featured on a dollar coin issued in 2000 by the US Mint.

56.The text is mainly about_______.

  A. the whole life of Sacagawea          B. the difficulties the Corps of Discovery met

  C. American history in exploration       D. Sacagawea’s contribution to the Corps of Discovery

57.What’s one of the purposes of the Corps of Discovery?

  A. To drive the Indians away                 B. To explore the Rocky Mountains

  C. To find how to reach the Pacific            D. To look for Sacagawea for help

58.During the expedition, what excited Sacagawea most was that she______.

  A.bought horses for Lewis and Clark           B. saved important documents and supplies

  C.was considered as a symbol of peace         D. reunited with her brother Cameahwait

59.What can be inferred from the text?

  A.Sacagawea is still highly honored by Americans

  B.Sacagawea’s husband was unfamiliar with the West

  C.Sacagawea stayed on the Pacific coast for half a year

  D.Sacagawea’s husband did little for the expedition

查看答案和解析>>

科目:高中英語 來源: 題型:閱讀理解

 (衡陽市八中2008屆高三模擬試題B篇)

Skipping classes, particularly big lectures where an absence is likely to go undetected, is a tradition among college undergraduates.

These days, however, some professors say they’re seeing more absenteeism, as students make the most of new technologies as learning aids.

Americ Azevedo taught an “ Introduction to Computers ” at the University of California, Berkeley, US last semester. By visiting the course’s website, the 200 enrolled students could download audio recordings or watch digital videos of the lectures, as well as read the instructor’s detailed lecture notes.

But there was one big problem: So many of the undergraduates relied on the technology that at times only 20 or so actually showed up for class.

Doug Suda, 19, a student in Azevedo’s class last semester, said he skipped about three-quarter of the lectures. It’s largely because he was busy with an off-campus job and was taking the course to fulfill a business major requirement.

At the end of the term, Suda prepared hurriedly for the final exam by watching videos of about 15 lectures over three days.

“ If I hadn’t that… I would probably fail the class,” said Suda, who instead received a B-plus.

Despite the concerns about absenteeism, schools are increasingly experimenting with ways to let students watch or listen to lectures on their computers or digital music players, like ipods. Last month, Harvard Medical School began “ Podcasting ”lectures. Students can download them into digital musical players, and study while they, say, go for a walk.

As many academics accept the electronic innovation, others are pushing back. To encourage attendance, they are applying low-tech tactics, like giving more surprising quizzes or cutting back their online offerings.

Lee Chanian, a UCLA economics professor, says “ too much technology leads to passive learning environment and encourage more absenteeism”. He now puts fewer lecture materials online, and provides extensive notes only for the most complicated topics.

60.The word “ absenteeism ” in the 2nd paragraph most probably means      .

A. attending classes                B. having classes

C. giving classes                   D. skipping classes

61.At times only 20 or so undergraduates showed up for Americ Azevedo’s class because     .

A. so many undergraduates relied on digital learning aids 

B. so many undergraduates have off-campus jobs.

C. his lectures were boring               D. the exam was easy to pass

62.According to the passage, to encourage attendance, some academics are applying the following lower-tech tactics EXCEPT     .

  A. giving more surprise quizzes          

B. putting fewer lecture materials online

C. providing extensive notes only for the most complicated topics 

D. cutting off their online offerings

63.What could be the best title for this passage?

A. Lectures fight digital learning aids to up class numbers   

B. Lectures apply digital learning aids to up class numbers

C. Lectures fight lower-tech tactics to up class numbers

D. Schools are encouraging more absenteeism

查看答案和解析>>

同步練習冊答案
av免费观看大全| 天堂在线中文网| 日本久久一级片| 国产成人自拍偷拍| 亚洲午夜久久久久久久久| 国产免费无码一区二区视频| 91精品无人成人www| 久久久精品在线视频| 久久艹精品视频| 无码国产精品高潮久久99| 成年人免费视频播放| 久热精品在线播放| 精品99久久久久成人网站免费 | 国产精品v日韩精品v在线观看| 极品国产91在线网站| 日韩三级视频在线| 国产婷婷在线观看| 国产三区在线视频| 中文字幕一区二区三区波野结 | 亚洲免费一级视频| 免费看日韩av| 国产3p露脸普通话对白| 在线观看国产区| 国产男男gay网站| 色欲人妻综合网| 波多野结衣视频网站| 91资源在线播放| 欧美激情一区二区视频| 人妻av一区二区| 国产毛片久久久久久| 18禁一区二区三区| 色呦色呦色精品| 亚洲精品乱码久久久久久不卡| 伊人国产在线视频| 国产又黄又粗又猛又爽的视频| 中文字幕第36页| 人妻激情偷乱频一区二区三区| 成年网站在线播放| 大地资源二中文在线影视观看| 一级网站在线观看| 一级做a爱片久久毛片| 波多野结衣三级在线| 超碰超碰在线观看| 伊人网伊人影院| 国产一卡二卡三卡| 国产精品免费入口| 夜夜躁很很躁日日躁麻豆| 777久久精品一区二区三区无码| 精品国产无码AV| 一级 黄 色 片一| www日韩在线| 999热精品视频| 免费在线观看污污视频| 亚洲av无码国产综合专区| 自拍偷拍21p| 国产精品成人免费观看| 亚洲第一天堂网| 国产无遮挡又黄又爽| av久久久久久| 一卡二卡三卡四卡| 丰满少妇一级片| 欧美一级片黄色| 91免费视频播放| 国产精品中文久久久久久| 先锋影音男人资源| 欧美做受喷浆在线观看| 国产精品久久久久久在线| av在线免费看片| 国产精品国产三级国产专区51| 午夜不卡久久精品无码免费| av免费在线不卡| 狠狠干 狠狠操| 日本妇女毛茸茸| 亚洲自拍偷拍另类| 国产成人一区二区三区影院在线| 美女日批免费视频| 亚洲av综合色区| 欧美亚洲色综久久精品国产 | 欧美福利视频一区二区| 久热精品在线观看视频| www.爱色av.com| 黄色片免费在线观看视频| 免费一级suv好看的国产网站| 老司机午夜免费福利| 无码精品人妻一区二区三区影院| 中文字幕永久在线视频| 日本午夜精品理论片a级app发布| 视频二区在线播放| 欧美自拍小视频| 国产一区亚洲二区三区| 日韩极品视频在线观看| 国产freexxxx性播放麻豆 | 日本五十熟hd丰满| 国产精品.www| 天天操中文字幕| 无码人妻丰满熟妇区bbbbxxxx| 日本少妇性生活| 亚洲理论片在线观看| 精品少妇人妻一区二区黑料社区| 日批在线观看视频| 成人免费看aa片| 91无套直看片红桃在线观看| 看免费黄色录像| 一级黄色录像免费看| 亚洲熟妇无码av在线播放| 久久久久亚洲AV成人网人人小说| 国产伦理在线观看| 国产免费av观看| 性一交一乱一精一晶| 久久久久亚洲av无码麻豆| 天天躁日日躁狠狠躁av麻豆男男| 成人在线一级片| 红桃一区二区三区| 已婚少妇美妙人妻系列| 欧美成人精品激情在线视频| 日本一二三区视频| 一级片黄色免费| 国产一级淫片a视频免费观看| 国产精品无码一区二区桃花视频| 亚洲精品成人区在线观看| 中文字幕第3页| 天天干天天摸天天操| 久久久亚洲av波多野结衣| 992tv快乐视频| 成 人 黄 色 小说网站 s色| 五月天激情国产综合婷婷婷| 日韩在线观看视频一区| 欧美一级淫片aaaaaa| 中文字幕一二三四区| 秋霞无码一区二区| 日韩精品久久久久久久| 人妻夜夜爽天天爽| 亚洲国产视频一区二区三区| 99自拍偷拍视频| 三上悠亚在线一区| 91禁在线观看| 手机av在线不卡| 奇米影视四色在线| 日本中文字幕二区| 午夜精品久久久久久久96蜜桃| 欧美黄色一级生活片| 91av在线免费播放| 国产精品视频在线观看免费| 免费看91的网站| 91香蕉视频网址| www.av麻豆| 亚洲 小说 欧美 激情 另类| 成人3d动漫一区二区三区| 国产成人精品a视频| japan高清日本乱xxxxx| 久草视频国产在线| 亚洲综合免费视频| 特色特色大片在线| 国产一级片一区二区| 情侣偷拍对白清晰饥渴难耐| 国产精品变态另类虐交| 泷泽萝拉在线播放| 久久精品免费在线| 亚洲色图100p| 中文字幕在线观看第二页| 黑鬼狂亚洲人videos| 91青青草视频| 久久视频免费在线| 国产人妖在线播放| 免费看日本毛片| 少妇精品视频一区二区| 午夜免费福利在线| 国产 欧美 在线| 中文字幕精品无码一区二区| 国产黄在线免费观看| 老司机午夜av| aa一级黄色片| 麻豆av免费在线| 国产性生活毛片| 亚洲国产成人精品激情在线| 国产成人三级视频| 性生活一级大片| 国产玉足脚交久久欧美| 亚洲av成人精品毛片| 久久免费小视频| 青青草综合视频| 69久久精品无码一区二区| 久久亚洲AV无码| 800av在线播放| 中文字幕久久网| 91pony九色| 五月天在线免费视频| 欧美日韩一区二区区| 国产超碰人人爽人人做人人爱| 国产 日韩 亚洲 欧美| 亚洲无人区码一码二码三码的含义| 中文字幕在线网站| 久久久精品高清| 国产小视频免费| 亚洲中文字幕无码av| 午夜久久久久久久久久| 欧美日韩综合在线观看| 农村妇女精品一二区| 麻豆精品一区二区三区视频| 岛国av免费观看| 91久久精品国产91性色69| 国产亚洲精品久久久久久打不开| 国产午夜大地久久| 黄色录像免费观看| 无码人妻精品一区二区三区温州| 亚洲经典一区二区三区| 91丨九色丨海角社区| 日本五十路女优| 国产又色又爽又高潮免费| 伊人av在线播放| 亚洲av少妇一区二区在线观看 | 四虎成人永久免费视频| 久草视频免费在线播放| 国产高清视频网站| 色窝窝无码一区二区三区| 国产极品久久久| 99在线观看精品视频| 伊人网视频在线| 一区二区日韩在线观看| 国产福利资源在线| 国产精品酒店视频| 亚洲欧洲视频在线观看| 老司机av网站| 日本精品在线免费观看| 99热亚洲精品| av在线播放天堂| 好吊色这里只有精品| 中文字幕第69页| 久久久视频6r| 欧美巨胸大乳hitomi| 成人免费网站黄| 一二三不卡视频| 91超薄肉色丝袜交足高跟凉鞋| 国产剧情精品在线| 97精品人妻一区二区三区在线 | 久久久久99精品成人片毛片| 九九免费精品视频| 日批视频免费在线观看| 超碰免费在线97| 在线免费观看日韩av| 91porn在线视频| 粉嫩虎白女毛片人体| 亚洲一二三不卡| www.av88| 国产一卡二卡三卡四卡| 久久人妻无码aⅴ毛片a片app| 日韩国产欧美亚洲| 中文字幕丰满乱码| 成人黄色片在线观看| 日本精品一区二区在线观看| 中文字幕5566| 国产欧美视频一区| 天堂网中文在线观看| 水蜜桃色314在线观看| 色窝窝无码一区二区三区| 欧美激情视频二区| 国产午夜小视频| 久久久久久久久久久国产精品| 欧美在线观看视频网站| 国产成人精品777777| 国产三级视频网站| 亚洲精品无码久久久久久| 特级西西444www高清大视频| 日本五十肥熟交尾| 精品无码国模私拍视频| 免费在线观看视频a| 日韩av一二三区| 伦理片一区二区| 精品久久久久久无码国产| 国产成人无码一区二区在线播放| 美女伦理水蜜桃4| aa在线免费观看| 亚洲av永久纯肉无码精品动漫| 欧日韩在线视频| 亚洲精品视频网址| 亚洲国产午夜精品| 无码h黄肉3d动漫在线观看| 分分操这里只有精品| 一级日韩一级欧美| 91免费网站视频| 免费看a级黄色片| 国产香蕉在线观看| 欧美黑人经典片免费观看| 国产又粗又大又爽视频| 麻豆明星ai换脸视频| 中文字幕第四页| 日日噜噜噜夜夜爽爽| 久久久久久久久久久免费视频| 黄色av一区二区| 欧美成人777| 中文字幕 亚洲视频| 青青草综合在线| 国产极品久久久| 亚欧在线免费观看| 给我看免费高清在线观看| 免费日韩在线观看| 日本免费网站在线观看| 伊人成人222| 国产免费无码一区二区视频| 国产小视频一区| 日本熟妇一区二区三区| 黄色a在线观看| 婷婷五月综合久久中文字幕| 亚洲一区在线不卡| www.4hu95.com四虎| 亚洲国产av一区二区三区| 国产女主播av| 台湾佬美性中文| 秋霞精品一区二区三区| 国产亚洲综合视频| 欧美国产一级片| 欧美黄网站在线观看| 亚洲精品成人无码| 后入内射欧美99二区视频| 精品无码av在线| 婷婷无套内射影院| 永久免费av无码网站性色av| 国产精品视频无码| 国产污视频在线观看| 91精品91久久久中77777老牛 | 992kp免费看片| 国产精品va在线观看无码| 国产又粗又长又爽| www.色婷婷.com| 国产无遮挡呻吟娇喘视频| 日日鲁鲁鲁夜夜爽爽狠狠视频97| 久久久久久国产免费a片| 亚洲av成人无码网天堂| 中文天堂在线视频| 国产亚洲色婷婷久久99精品| 欧美色图另类小说| 国产三级国产精品国产国在线观看| 宇都宫紫苑在线播放| 国产精品亚洲lv粉色| 国产一级特黄aaa大片| 国产福利在线免费| 日韩精品免费播放| 国产精品第七页| 一起草最新网址| 99热这里只有精| 亚洲无码久久久久| 美女av免费在线观看| 亚洲色欲久久久综合网东京热| 国产又粗又硬又长又爽| 日本成人午夜影院| 丁香激情五月少妇| 国产成人无码精品久久二区三| 日韩av无码一区二区三区不卡| 欧美成人精品一区二区免费看片| 嫩草视频免费在线观看| 久久综合伊人77777麻豆最新章节| 国产免费黄色小视频| 国产二区视频在线| www一区二区www免费| 久久久久久久久久久福利| 黑森林福利视频导航| 特级西西www444人体聚色| 魔女鞋交玉足榨精调教| 美女爆乳18禁www久久久久久 | 国产 日韩 欧美 综合| 人人妻人人澡人人爽久久av| 人妻少妇偷人精品久久久任期| 中文字幕 欧美 日韩| japanese在线观看| 网爆门在线观看| 每日在线观看av| 亚洲人辣妹窥探嘘嘘| 国产亚洲第一页| 伊人亚洲综合网| 亚洲精品成人无码毛片| 日韩人妻无码一区二区三区| 欧美a级片免费看| 日本手机在线视频| 自拍偷拍一区二区三区四区| 日韩精品一区三区| 99久久精品免费看国产交换| 亚洲av毛片成人精品| 手机看片福利视频| 国内少妇毛片视频| 亚洲五月激情网| 91禁在线观看| 成年人网站免费看| 欧美一级视频免费看| 动漫精品一区一码二码三码四码| 一级特黄录像免费看| 能免费看av的网站| 欧美一级在线看| 日日噜噜噜噜人人爽亚洲精品| www香蕉视频| 亚洲一区二区三区黄色| 草草影院第一页| www.av中文字幕| 国产91porn| 日本熟伦人妇xxxx| 日本黄色www| 波多野结衣与黑人| 成人免费播放器| 五月天激情四射| 舐め犯し波多野结衣在线观看| www.亚洲天堂网|