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

We are lucky to be among the generation of people who have ________ and experienced the great social changes in our country.

A.conflicted
B.responded
C.witnessed
D.associated

練習冊系列答案
相關習題

科目:高中英語 來源:皇冠優化名題 高中英語 題型:050

A Batterv's Worst Nightmare(噩夢)

  Portable electronics that can be carried about easily are only as good as their batteries and,let's face it,batteries aren't very good,especially when compared with,say,petrol,which packs 100 times a battery's energy into an equal space.That's why a large group of mechanical engineers(centered at the Massachusetts Institute of Technology,but with partners at other universities and companies)are hard at work in an effort to replace batteries with a tiny engine that runs on fuel.Imagine a battery-free life!When the fuel runs out in your laptop or mobile phone,you just fill up and go.

  The engine — about the size of a ten-cent coin— starts with a combustion chamber(燃燒室)that bums hydrogen(氫).Its tiny parts are etched onto silicon wafers(硅片)in the same manner that computer parts are imprinted onto integrated circuits(集成電路).The first engine is made up of five wafers.And since these wafers could be produced in much the same way as computer chips,they could probably be produced quite cheaply.

  But the devil in all this nice detail is efficiency(效率).Tiny engine parts don't always behave like their scaled-up parts of the first engine.Something between the parts can slow down the works,according to Columbia University professor Luc Frechette,one of the engine's designers.Extreme heat from the combustion chamber is also a problem,often leaking to other parts of the engine.

  The scientists' goal is to create an engine that will operate at 10 percent efficiency— that is,10 times better than batteries operate.Frechette says that a complete system,with all parts in place and working,will be set up in the next couple of years,but commercial models aren't likely until at least the end of the next ten years.

(1)

According to the passage,the title suggests that ________

[  ]

A.

batteries should be greatly improved

B.

petrol will be used instead of batteries

C.

the time of batteries will be gone forever

D.

pollution caused by batteries must be solved

(2)

What's the meaning of the underlined word“devil”in Paragraph 3?

[  ]

A.

problem

B.

advantage

C.

invention

D.

technique

(3)

What can we infer from the passage?

[  ]

A.

The new invention doesn't need any fuel.

B.

The new engine has been produced in quantity.

C.

The new invention is much cheaper than the battery.

D.

The new engine needs to be improved before it's on sale.

(4)

What is the main purpose of this passage?

[  ]

A.

To introduce a new invention to readers.

B.

To persuade readers not to use batteries.

C.

To show us how the new invention works.

D.

To declare when the engine will be on sale.

查看答案和解析>>

科目:高中英語 來源:同步單元練習高中2年級第二學期用英語第二冊下 題型:050

閱讀理解

閱讀下面短文,從每題所給四個選項中選出最佳答案。

A Battery's Worst Nightmare(噩夢)

  Portable electronics that can be carried about easily are only as good as their batteries and, let's face it, batteries aren't very good, especially when compared with, say, petrol, which packs 100 times a battery's energy into an equal space. That's why a large group of mechanical engineers(centered at the Massachusetts Institute of Technology, but with partners at other universities and companies) are hard at work in an effort to replace batteries with a tiny engine that runs on fuel. Imagine a battery-free life! W hen the fuel runs out in your laptop or mobilephone, you just fill up and go.

  The engine, about the size of a ten-cent coin, starts with a combustion chamber(燃燒室)that burns hydrogen(氫). Its tiny parts are etched onto silicon wafers(硅片) in the same manner that computer parts are imprinted onto integrated circuits(集成電路). The first engine is made up of five wafers. And since these wafers could be produced in much the same way as computer chips, they could probably be produced quite cheaply.

  But the devil in all this nice detail is efficiency(效率). Tiny engine parts don't always behave like their scaled-up parts of the first engine. Something between the parts can slow down the works, according to Columbia University professor Luc Frechette, one of the engine's designers. Extreme heat from the combustion chamber is also a problem, often leaking to other parts of the engine.

  The scientists' goal is to create an engine that will operate at 10 percent efficiency-that is, 10 times better than batteries operate. Frechette says that a complete system, with all parts of place and working, will be set up in the next couple of years, but commercial models aren't like until at least the end of the next ten years.

1.According to the passage, the title suggests that ________.

[  ]

A.batteries should be greatly improved

B.petrol will be used instead of batteries

C.the time of batteries will be gone forever

D.pollution caused by batteries must be solved

2.What's the meaning of the underlined word “devil” in paragraph 3?

[  ]

A.problem
B.advantage
C.invention
D.technique

3.What can we infer from the passage?

[  ]

A.The new invention doesn't need any fuel.

B.The new engine has been produced in quantity.

C.The new invention is much cheaper than the battery.

D.The new engine needs to be improved before it's on sale.

4.What is the main purpose of this passage?

[  ]

A.To introduce a new invention to readers.

B.To persuade readers not to use batteries.

C.To show us how the new invention works.

D.To declare when the engine will be on sale.

查看答案和解析>>

科目:高中英語 來源:2010-2011哈爾濱六中高一下學期期中英語試卷 題型:閱讀理解

A Battery’s Worst Nightmare(噩夢)
Portable electronics that can be carried about easily are only as good as their batteries and, let’s face it, batteries aren’t very good, especially when compared with, say, petrol, which packs 100 times a battery’s energy into an equal space. That’s why a large group of mechanical engineers (centered at the Massachusetts Institute of Technology, but with partners at other universities and companies) are hard at work in an effort to replace batteries with a tiny engine that runs on fuel. Imagine a battery-free life!When the fuel runs out in your laptop or mobile phone, you just fill up and go.
The engine, about the size of a ten-cent coin, starts with a combustion chamber (燃燒室) that burns hydrogen (氫). Its tiny parts are etched onto silicon wafers (硅片) in the same manner that computer parts are imprinted onto integrated circuits (集成電路). The first engine is made up of five wafers. And since these wafers could be produced in much the same way as computer chips, they could probably be produced quite cheaply.
But the devil in all this nice detail is efficiency(效率). Tiny engine parts don’t always behave like their scaled-up parts of the first engine. Something between the parts can slow down the work, according to Columbia University professor Luc Frechette, one of the engine’s designers. Extreme heat from the combustion chamber is also a problem, often leaking to other parts of the engine.
The scientists’ goal is to create an engine that will operate 10 times better than batteries do. Frechette says that a complete system, with all parts in place and working, will be set up in the next couple of years, but commercial models aren’t available until at least the end of the next ten years. 
【小題1】.
. According to the passage, the title suggests that ________.

A.batteries should be greatly improvedB.petrol will be used instead of batteries
C.the time of batteries will be gone foreverD.pollution caused by batteries must be prevented
【小題2】.
What’s the meaning of the underlined word “devil” (In Paragraph 3)?
A.Problem. B.Advantage. C.Invention. D.Technique.
【小題3】.
What can we infer from the passage?
A.The new invention doesn’t need any fuel.
B.The new engine has been produced in quantity.
C.The new invention is much cheaper than the battery.
D.The new engine needs to be improved before it’s on sale.
【小題4】.
. What is the main purpose of this passage?
A.To introduce a new invention to readers.B.To persuade readers not to use batteries.
C.To show us how the new invention works.D.To declare when the engine will be on sale.

查看答案和解析>>

科目:高中英語 來源:20102011哈爾濱六中高一下學期期中英語試題 題型:閱讀理解

A Battery’s Worst Nightmare(噩夢)

     Portable electronics that can be carried about easily are only as good as their batteries and, let’s face it, batteries aren’t very good, especially when compared with, say, petrol, which packs 100 times a battery’s energy into an equal space. That’s why a large group of mechanical engineers (centered at the Massachusetts Institute of Technology, but with partners at other universities and companies) are hard at work in an effort to replace batteries with a tiny engine that runs on fuel. Imagine a battery-free life!When the fuel runs out in your laptop or mobile phone, you just fill up and go.

    The engine, about the size of a ten-cent coin, starts with a combustion chamber (燃燒室) that burns hydrogen (氫). Its tiny parts are etched onto silicon wafers (硅片) in the same manner that computer parts are imprinted onto integrated circuits (集成電路). The first engine is made up of five wafers. And since these wafers could be produced in much the same way as computer chips, they could probably be produced quite cheaply.

     But the devil in all this nice detail is efficiency(效率). Tiny engine parts don’t always behave like their scaled-up parts of the first engine. Something between the parts can slow down the work, according to Columbia University professor Luc Frechette, one of the engine’s designers. Extreme heat from the combustion chamber is also a problem, often leaking to other parts of the engine.

    The scientists’ goal is to create an engine that will operate 10 times better than batteries do. Frechette says that a complete system, with all parts in place and working, will be set up in the next couple of years, but commercial models aren’t available until at least the end of the next ten years. 

1..

. According to the passage, the title suggests that ________.

    A. batteries should be greatly improved           B. petrol will be used instead of batteries

    C. the time of batteries will be gone forever    D. pollution caused by batteries must be prevented

2..

 What’s the meaning of the underlined word “devil” (In Paragraph 3)?

     A. Problem.            B. Advantage.         C. Invention.                  D. Technique.

3..

 What can we infer from the passage?

A. The new invention doesn’t need any fuel. 

B. The new engine has been produced in quantity.

    C. The new invention is much cheaper than the battery.

    D. The new engine needs to be improved before it’s on sale.

4..

. What is the main purpose of this passage?

    A. To introduce a new invention to readers.        B. To persuade readers not to use batteries.

    C. To show us how the new invention works.   D. To declare when the engine will be on sale.

 

查看答案和解析>>

科目:高中英語 來源: 題型:閱讀理解

 (江蘇省啟東中學2007高考最后沖刺練習A篇)

A Battery’s Worst Nightmare (噩夢)

Portable electronics that can be carried about easily are only as good as their batteries and, let’s face it, batteries aren’t very good, especially when compared with, say, petrol, which packs 100 times a battery’s energy into an equal space. That’s why a large group of mechanical engineers (centered at the Massachusetts Institute of Technology, but with partners at other universities and companies) are hard at work in an effort to replace batteries with a tiny engine that runs on fuel. Imagine a battery-free life! When the fuel runs out in your laptop or mobile phone, you just fill up and go.

The engine—about the size of a ten-cent coin—starts with a combustion chamber (燃燒室) that burns hydrogen (氫) . Its tiny parts are etched onto silicon wafers (硅片) in the same manner that computer parts are imprinted onto integrated circuits (集成電路). The first engine is made up of five wafers. And since these wafers could be produced in much the same way as computer chips, they could probably be produced quite cheaply.

But the devil in all this nice detail is efficiency(效率). Tiny engine parts don’t always behave like their scaled-up parts of the first engine. Something between the parts can slow down the works, according to Columbia University professor Luc Frechette, one of the engine’s designers. Extreme heat from the combustion chamber is also a problem, often leaking to other parts of the engine.

The scientists’ goal is to create an engine that will operate at 10 percent efficiency —that is, 10 times better than batteries operate. Frechette says that a complete system, with all parts of place and working, will be set up in the next couple of years, but commercial models aren’t like until at least the end of the next ten years.

1. According to the passage, the title suggests that ________

       A. batteries should be greatly improved      

B. petrol will be used instead of batteries

       C. the time of batteries will be gone forever  

D. pollution caused by batteries must be solved

2. What’s the meaning of the underlined word “devil” in paragraph 3?

       A. problem   B. advantage        C. invention  D. technique

3. What can we infer from the passage?

       A. The new invention doesn’t need any fuel.

       B. The new engine has been produced in quantity.

       C. The new invention is much cheaper than the battery.

       D. The new engine needs to be improved before it’s on sale

4. What is the main purpose of this passage?

       A. To introduce a new invention to readers.

       B. To persuade readers not to use batteries.

       C. To show us how the new invention works.

       D. To declare when the engine will be on sale.

查看答案和解析>>

同步練習冊答案
最新亚洲激情| 五月婷婷丁香在线| 理论片在线观看理伦片| 最近在线中文字幕| 91精品国产91久久久久久密臀| 国产精品资源在线| 91成人在线免费观看| 欧美剧在线观看| 日韩精品国内| 一级欧美一级日韩片| 91高潮大合集爽到抽搐| 免费看电影在线| 国产精品久久久久无码av| 99v久久综合狠狠综合久久| 337p亚洲精品色噜噜噜| 国产精品ⅴa在线观看h| 黄色av网址在线播放| 亚洲色图综合区| 你懂的视频在线观看| 激情av综合| 国产91丝袜在线观看| 91精品国产综合久久精品麻豆| 国产大片精品免费永久看nba| 99久久免费观看| 亚洲二区在线播放| 九色视频在线观看免费播放| 国产精品国产| 成人国产精品免费观看动漫| 91精品国模一区二区三区| 国产高清视频一区三区| 欧美 日韩精品| 日本少妇做爰全过程毛片| 日本免费在线视频| 91亚洲国产高清| 国产精品国产精品国产专区不片| 最近2019中文字幕大全第二页| 日本精品国语自产拍在线观看| 成人手机在线免费视频| 亚洲人成色777777精品音频| 97se亚洲| 99久久精品国产精品久久| 亚洲第一精品夜夜躁人人躁| 国产精品一码二码三码在线| 精品1卡二卡三卡四卡老狼| 成人福利小视频| 精品国产鲁一鲁****| 国产一级精品在线| 欧美videos大乳护士334| 国产精品免费一区二区三区在线观看 | 99r国产精品| 亚洲美女性视频| 少妇特黄a一区二区三区| 影音先锋男人资源在线观看| 番号在线播放| 女人色偷偷aa久久天堂| 亚洲成人精品一区二区| 日本亚洲欧洲色| 国产一伦一伦一伦| 成人午夜免费在线观看| 韩国女主播一区二区三区| 91农村精品一区二区在线| 一区二区三区四区在线观看视频| 一道本在线观看视频| 精品视频久久久久| 男人天堂视频在线观看| 久久精品国产**网站演员| 日韩午夜av一区| 日本一区二区三区四区在线观看| 91嫩草|国产丨精品入口| 在线观看三级视频| 久久久久一区| 精品久久一区二区三区| 天天爽天天狠久久久| 国产一级一片免费播放| 色在线免费观看| 国产在线观看一区二区| 亚洲男子天堂网| 奇米777四色影视在线看| 亚洲婷婷久久综合| 色播一区二区| 国产精品高潮久久久久无| 青草成人免费视频| 蜜桃视频无码区在线观看| 最近中文字幕在线中文视频| 国产精品成人一区二区不卡| 欧美性生交大片免网| av成人观看| 日本 欧美 国产| 成年网站在线视频网站| 国产精品自拍毛片| 北条麻妃99精品青青久久| 国产三区在线视频| 亚洲欧美日韩精品永久在线| 久久中文亚洲字幕| 91国产福利在线| 久久久福利视频| 久久精品国产亚洲av无码娇色| 天天综合网站| 久久久精品免费观看| 91精品国产91久久久久久最新 | 精品国产在天天线2019| 亚洲欧洲一二三| wwwwww在线观看| 欧美日韩直播| 精品国产成人在线| 久久99欧美| www.国产色| 99久久人爽人人添人人澡| 久久精品国产亚洲一区二区| 久久久电影免费观看完整版| 国产高潮免费视频| 青青草观看免费视频在线| 亚洲国产高清视频| 亚洲国产精品资源| 国产原创popny丨九色| 欧美一级特黄aaaaaa| 我不卡手机影院| 欧美一卡二卡在线观看| 特级西西444| 亚洲精品一区二区三区区别| 91精品动漫在线观看| 91精品国产综合久久久蜜臀粉嫩 | 国产日韩欧美一区二区三区四区 | 东方aⅴ免费观看久久av| 欧美老女人性视频| 黄色av网址在线观看| 青草在线视频| 久久色成人在线| 国产精品久久久久久影视| 国产成人免费在线观看视频| 久久69成人| 夜夜亚洲天天久久| 鲁鲁狠狠狠7777一区二区| 日本一本在线观看| 国产亚洲电影| 日韩视频免费直播| 日韩av黄色网址| 欧美日韩视频精品二区| 精品影视av免费| 韩国福利视频一区| 国产又黄又粗的视频| 精品久久毛片| 疯狂做受xxxx高潮欧美日本| 亚洲精品久久久久久一区二区| 国产又大又粗又长| 欧美日一区二区在线观看 | 日韩欧美高清| 亚洲成人激情在线| 另类小说色综合| 亚洲七七久久综合桃花剧情介绍| 91免费国产在线| 91麻豆精品秘密入口| 波多野结衣一区二区三区四区| 欧美日韩激情在线一区二区三区| 日韩精品一区国产麻豆| 亚洲最大成人在线观看| 超碰在线观看免费版| 久久综合九色综合97婷婷 | 欧美 变态 另类 人妖| 日本美女一区| 黄色一区二区在线| 久久视频免费在线| 无线免费在线视频| 国产成人午夜电影网| 国产玖玖精品视频| 亚洲黄网在线观看| 欧美激情成人在线| 久久色精品视频| 91狠狠综合久久久久久| 亚洲精品影片| 日韩一区二区三区高清免费看看 | 欧美激情国产在线| 国产亚洲精品美女久久久| 中文字幕乱码在线| 国产精品视频一区二区三区| 欧美最新大片在线看| 亚洲 高清 成人 动漫| 九色porny丨首页在线| 国产日韩欧美精品一区| 免费毛片一区二区三区久久久| 亚洲欧美另类综合| 久久精品99国产精品| 国产欧美一区二区白浆黑人| 日本中文字幕在线观看视频| 伊人久久亚洲影院| 久久99久久久久久久噜噜| 中文字幕在线观看2018| 亚洲性视频大全| 亚洲一区二区黄| 一级黄色片网址| 亚洲警察之高压线| 国产亚洲美女久久| 美国美女黄色片| 日韩综合一区| 久久亚洲国产成人| 久久成人在线观看| 中文字幕日韩一区二区不卡| 欧美高清videos高潮hd| 国产精品第一页在线观看| 在线一区免费| 91国产高清在线| 日韩在线视频不卡| 久久婷婷影院| 国产这里只有精品| 亚洲国产av一区二区| 国产a区久久久| 久99久视频| 人成免费电影一二三区在线观看| 国产三级一区二区| 2021国产视频| 第一av在线| 在线免费亚洲电影| 日韩欧美中文视频| 香蕉成人app| 亚洲欧美精品伊人久久| 久草福利资源在线| 一区二区三区四区在线观看国产日韩 | 国产精品久久久久久久久毛片| 精品一区二区在线看| 国产偷久久久精品专区| 毛片网站在线| 亚洲免费在线视频| 激情综合网俺也去| 一区二区三区| 亚洲乱码国产乱码精品精天堂| 国产精品99久久久久久成人| 亚洲无线视频| 国产精品视频久| 特黄视频在线观看| 国产欧美日韩另类视频免费观看| 成人黄色片免费| 欧美人体一区二区三区| 精品国精品国产| 亚洲xxxx3d动漫| 国产精品腿扒开做爽爽爽挤奶网站| 成人h猎奇视频网站| 欧美成人明星100排名| 国产精品国模大尺度视频| 99爱视频在线| 蜜桃精品一区二区三区| 中文字幕欧美精品在线| 国产精品老女人| 狠狠v欧美v日韩v亚洲ⅴ| 日韩免费中文专区| 欧美巨大xxxx做受沙滩| 欧美一卡在线观看| 天堂av免费在线| 国产精品色网| 九九99久久| 四季久久免费一区二区三区四区| 欧美系列亚洲系列| 国产sm调教视频| 影音先锋亚洲电影| 成人欧美视频在线| 九义人在线观看完整免费版电视剧| 日本高清无吗v一区| 人体私拍套图hdxxxx| 久久久久亚洲| 99久久99久久精品国产片| 国产精品99999| 在线观看网站黄不卡| 亚洲理论片在线观看| 亚洲成人在线| 久久久www免费人成黑人精品| 超碰在线免费播放| 精品奇米国产一区二区三区| 精品在线视频观看| 国产一区二区三区在线观看免费视频| 一区二区不卡视频| 四虎成人在线| 久久亚洲精品成人| www.久久综合| 亚洲尤物在线视频观看| a级片在线观看视频| 国产精品99一区二区| 国产精品一区二区三区免费| 深夜国产在线播放| 日韩av在线资源| 成年人视频免费| 久久久一区二区三区捆绑**| 黄色在线视频网| 精品免费av| 亚洲已满18点击进入在线看片| 日本福利在线| 精品久久久久一区二区国产| 午夜影院在线看| 91麻豆国产精品久久| 天堂在线资源视频| 日本黄色精品| 国产98在线|日韩| 蜜桃av.网站在线观看| 中文字幕久精品免费视频| 国产片在线播放| 一区二区三区在线观看国产| 麻豆国产精品一区| 老牛嫩草一区二区三区日本| 亚洲免费精品视频| 精品午夜av| 国产精品成人一区二区| 在线观看黄色av| 亚洲国产第一页| 亚洲天堂国产精品| 一区二区三区四区乱视频| 日本黄色网址大全| 久久精品999| 男人操女人免费软件| 日韩精品免费一区二区在线观看| 99久久综合狠狠综合久久止| 松下纱荣子在线观看| 不卡av日日日| 青青草观看免费视频在线| 日韩免费看网站| 亚洲天天综合网| 午夜精品久久一牛影视| 国产稀缺精品盗摄盗拍| 波多野结衣视频一区| 欧美视频国产视频| 国产精品久久久久久久免费软件 | 一级一级黄色片| 亚洲综合一区二区精品导航| 亚洲毛片亚洲毛片亚洲毛片| 国产精品一区在线观看乱码| 久久精品网站视频| 欧美激情性爽国产精品17p| 一区二区日本伦理| 任你躁在线精品免费| 国产98在线|日韩| 国产精品黄色片| 国产精品久久久久久久久久尿 | 韩国中文字幕2020精品| 亚洲精品98久久久久久中文字幕| www.国产精品视频| 欧美日韩国产成人在线91| 嫩草影院一区二区三区| 亚洲国产一区二区三区| 久久免费少妇高潮99精品| 国产精品女上位| 成人黄色短视频| 久久久99精品免费观看| 免费看污黄网站在线观看| 福利一区二区在线| 特级特黄刘亦菲aaa级| 激情文学综合丁香| 九九九九九国产| 蜜臀av在线播放一区二区三区 | 国产免费视频一区二区三区| 在线观看网站黄不卡| 在线观看国产精品视频| 色噜噜久久综合| 国产成人精品一区二区色戒| 欧美日韩美女在线| 黄色av网站免费| 色婷婷久久久综合中文字幕| 日本成人一级片| 色婷婷久久久亚洲一区二区三区| 精品一区二区无码| 91极品视觉盛宴| 亚洲天堂中文在线| 欧美男生操女生| 亚洲爱爱综合网| 欧美大片国产精品| 中文字幕校园春色| 日韩高清不卡av| 神马久久久久| 日韩在线观看免费| 麻豆影院在线观看| 久久免费高清视频| 久热在线观看视频| 国产精品欧美久久久| av在线播放一区| 国产经品一区二区| 欧美亚洲色图校园春色| 色噜噜狠狠色综合网| 天天综合一区| 久久亚洲中文字幕无码| 亚洲在线成人| 特级黄色片视频| 粉嫩aⅴ一区二区三区四区| 我和岳m愉情xxxⅹ视频| 国产精品美女久久久久久久 | 91亚洲资源网| 国产免费美女视频| 亚洲成人福利片| 国产又爽又黄免费软件| 日韩欧美123| 免费人成在线观看网站| 久久在线免费观看视频| 91九色国产在线播放| 国产精品自拍偷拍| 国产一区二区三区亚洲| 一级二级三级欧美| 亚洲乱码久久| 波多野结衣三级视频| 白白色 亚洲乱淫| 特级片在线观看| 一本久道中文字幕精品亚洲嫩| 韩国av免费在线| 在线免费看av不卡| 91超碰免费在线| 91偷拍精品一区二区三区|