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.reported    
B.appreciated    
C.impressed    
D.witnessed
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
欧美精品少妇| 日韩精品一区在线| 亚洲精品老司机| 91老师片黄在线观看| 精品在线免费观看| 日韩一区精品视频| 亚洲在线免费| 国产精品尤物| 免费视频久久| 香蕉久久夜色精品| 亚洲欧美日韩国产一区| 99视频精品| 红桃视频亚洲| 欧美日韩精品一本二本三本| 亚洲成av人片乱码色午夜| 国内精品久久久久久久久电影网 | 亚洲精品一二三四区| 国产欧美日韩视频一区二区| 久久精品一区四区| 久久精品在线免费观看| 欧美激情一区二区三区全黄| 久久久国产综合精品女国产盗摄| 成人av在线影院| zzijzzij亚洲日本少妇熟睡| 成人免费视频国产在线观看| 高清不卡一区二区在线| 99久久婷婷国产综合精品| 91视频在线观看免费| www一区二区| 国产欧美综合在线| 国产精品麻豆一区二区 | 国产成人三级视频| 欧美一级黄色录像片| 久久久国内精品| 国产视频九色蝌蚪| 日本激情视频在线播放| 麻豆传媒在线看| 真人bbbbbbbbb毛片| 日韩免费成人av| 久草视频手机在线| 五月天综合在线| 国产黄色免费视频| av网站在线免费看| 粉嫩欧美一区二区三区| 久久视频www| 成人三级网址| 国产麻豆久久| 国产精品视频3p| 成人在线丰满少妇av| 影音国产精品| 开心九九激情九九欧美日韩精美视频电影 | 欧美精品久久久| 影音先锋欧美在线| 日韩视频第二页| 欧美污在线观看| 蜜桃av免费在线观看| 亚洲伊人成人网| 丰满人妻熟女aⅴ一区| 欧美xxx.com| 美女尤物在线视频| 国产成人免费精品| 国产探花一区二区| 亚洲视频大全| 白白色亚洲国产精品| 亚洲综合在线观看视频| 日韩一区二区在线观看视频| 中文字幕亚洲图片| 国产精品久久久久久久久| 久久精品日韩精品| 成人在线免费观看av| 国产精品扒开腿做爽爽爽a片唱戏 亚洲av成人精品一区二区三区 | 成人a'v在线播放| 国产精品亚洲产品| 久久久久久一二三区| 五月综合激情网| 亚洲第一网中文字幕| 欧美放荡办公室videos4k| 91欧美激情另类亚洲| 自拍偷拍99| 亚洲色图欧美自拍| √天堂中文官网8在线| 国产三级伦理片| 日本在线免费看| 国产一区二区三区免费在线 | 操91在线视频| 操一操视频一区| 精品无码国模私拍视频| 黄色免费视频网站| 69国产精品视频免费观看| 久久久亚洲精华液精华液精华液| 欧美人与动牲性行为| 国产精品香蕉| 日韩精品成人一区二区在线| 国产精品乱子久久久久| 欧美一级理论性理论a| 欧美日韩国产成人| 久久涩涩网站| 一本一道久久a久久综合蜜桃| 中文字幕有码在线播放| 国产精品无码久久av| 黄色网址在线免费观看| 国产香蕉精品| 免费在线观看日韩欧美| 亚洲欧美视频一区| 日韩成人在线视频观看| 国产精品午夜国产小视频| 日本高清xxxx| 国产aⅴ激情无码久久久无码| 一级α片免费看刺激高潮视频| 啊v在线视频| 99re8这里有精品热视频8在线| 六月天综合网| 一区二区高清免费观看影视大全| 精品亚洲一区二区三区| 91亚洲精品久久久| 国产一区二区视频免费在线观看| 午夜国产福利一区二区| 最近中文字幕在线| 精品午夜视频| 老司机精品视频在线| 午夜电影网一区| 欧美另类交人妖| 水蜜桃亚洲精品| 久久久久成人精品无码中文字幕| 国产精品一区二区三区在线免费观看| 丝袜国产在线| 重囗味另类老妇506070| 国产精品福利电影一区二区三区四区| 日韩成人免费视频| 国产伦精品一区二区三区视频免费 | 久久国产精品 国产精品| 久久久九九九热| 亚洲天堂2021av| 午夜av不卡| 国产日韩1区| 午夜免费久久看| 欧美第一页在线| 高清无码一区二区在线观看吞精| 长河落日免费高清观看| 一个人免费视频www在线观看| 中文在线免费一区三区| 国产91精品精华液一区二区三区 | 国产一区日韩一区| 尤物av一区二区| 九九精品视频在线观看| 永久免费看av| 九九视频在线免费观看| 黄网页在线观看| 欧美日本三区| 亚洲地区一二三色| 羞羞色国产精品| 男人日女人逼逼| 国产成人免费看| 久久香蕉av| 亚洲激情av| 欧美午夜激情视频| 国产精品自产拍在线观| 中文字幕第38页| 国产喷水福利在线视频| 青青国产精品| 国产成人av电影在线| 亚洲国产精品成人一区二区| 久久人人97超碰人人澡爱香蕉| 美女洗澡无遮挡| 男男激情在线| 欧美 日韩 国产 一区| 精品女同一区二区三区在线播放| 日本精品视频网站| www.com久久久| 免费看日韩av| 欧美精品色图| 夜夜嗨av一区二区三区网页 | 性国产高清在线观看| 午夜综合激情| 欧美一区二区视频观看视频| 国产区一区二区| 日韩av网站在线播放| 菠萝菠萝蜜在线观看| 麻豆成人精品| 精品国产免费一区二区三区四区| 国产尤物91| 国产视频精品免费| h片视频在线观看| 国产又黄又大久久| 亚洲人成在线观看| 999一区二区三区| 在线免费av网| 国产精品久久久久久久久久白浆| 国产精品午夜春色av| 国语自产偷拍精品视频偷| 男人午夜视频在线观看| 亚洲成人av高清| 韩国精品一区二区三区| 欧美日韩夫妻久久| 亚洲成人第一| 波多野结衣高清在线| 风间由美性色一区二区三区四区| 国产精品不卡在线| 国产精品一二三视频| 在线免费观看视频| 黄色激情在线播放| 91亚洲精品一区二区乱码| 久久久亚洲精品视频| 亚洲精品乱码久久久久久蜜桃欧美| 国产小视频免费在线观看| 亚洲在线视频| 国产一区二区黄| 乱子伦视频在线看| 一级毛片在线视频| 国产欧美三级| 亚洲一区二区久久久| 天天操天天摸天天爽| 亚洲sss视频| 欧美在线综合| 亚洲一二在线观看| 网站在线你懂的| 国产最新在线| 成人福利视频网站| 青青草原一区二区| 丰满的亚洲女人毛茸茸| 欧美日韩亚洲国产| 亚洲视频在线一区观看| 91久久综合亚洲鲁鲁五月天| 久久久国产成人| 91精品久久久久久综合五月天| 亚洲一区在线观看视频| 国产一区二区三区四区hd| 中文字幕精品三级久久久| 日韩激情毛片| 欧美美女一区二区三区| 日本国产中文字幕| 在线观看免费视频一区二区三区| 亚洲综合电影一区二区三区| 色狠狠av一区二区三区香蕉蜜桃| 日本中文字幕在线不卡| 中文字幕有码在线观看| 久久影院午夜论| 91久久精品国产91久久性色| 亚洲一区欧美在线| 国产成人精品999在线观看| 7777精品伊人久久久大香线蕉超级流畅 | 精品一区二区三区不卡| 久久久久久国产精品三级玉女聊斋| 91网站免费入口| 亚洲人成777| 日韩欧美国产高清91| 国产又粗又大又爽的视频| 色网在线视频| 国产精品伊人色| 国产精品欧美一区二区三区奶水| 久久久久久免费观看| 亚洲日产av中文字幕| 精品久久久久久最新网址| 欧美亚洲日本在线观看| 爆操欧美美女| 亚洲欧洲美洲综合色网| 日韩高清dvd| 中文字幕视频免费在线观看| 国内成人自拍视频| 国产美女91呻吟求| 中文字幕在线播| 狠狠入ady亚洲精品| 毛片精品免费在线观看| 国产精品无码无卡无需播放器| 日本成人精品| 这里只有精品电影| mm131国产精品| yellow字幕网在线| 亚洲va天堂va国产va久| 国产91视频一区| 欧美一级二级三级区| 欧美国产亚洲另类动漫| 日本不卡免费新一二三区| 亚洲欧美日本在线观看| 国产.欧美.日韩| 成人片在线免费看| 黄色一级大片在线免费看国产| 日韩精品高清不卡| 国产精品狼人色视频一区| 无码人妻一区二区三区线| 亚洲免费高清| 日韩av电影在线免费播放| 成人公开免费视频| 乱人伦精品视频在线观看| 国产精品igao视频| 亚洲影院一区二区三区| 免费高清视频精品| 91久久精品在线| 亚洲av综合色区无码一二三区 | 亚洲精品日韩激情在线电影| 国产黄色一级大片| 国产一区亚洲一区| 国产精品v欧美精品v日韩精品| 污污视频在线免费看| 成人国产亚洲欧美成人综合网| 久久久久久高清| 国产在线视频网站| |精品福利一区二区三区| 男女啪啪免费视频网站| 91福利在线免费| 欧美日韩黄视频| 欧美大喷水吹潮合集在线观看| 国产一区二区在线视频你懂的| 日韩精品视频观看| 希岛爱理中文字幕| 影音先锋一区| 国产又爽又黄的激情精品视频| 亚洲精品国产精| 久久久久久久免费视频了| 中文字幕中文字幕一区三区| 乱插在线www| 欧美日韩国产综合一区二区三区 | av在线播放免费| 亚洲国产婷婷综合在线精品| 国产精品人人妻人人爽人人牛| 成人免费在线观看视频| 日韩精品久久久久久福利| 国产亚洲精品久久久久久豆腐| 欧美激情1区2区| 国产日韩av在线| 久草在线免费福利| 亚洲卡通动漫在线| 91小视频网站| 操欧美女人视频| 欧美成人午夜免费视在线看片 | 久久久91麻豆精品国产一区| 亚洲色图35p| 日本高清www免费视频| 九九热在线视频观看这里只有精品| 久久另类ts人妖一区二区| 欧美13一16娇小xxxx| 欧美性大战久久久久久久蜜臀 | 福利一区二区在线| eeuss中文| 日韩精品影院| 一区二区欧美在线| 五月天激情国产综合婷婷婷| 国产成人三级在线观看| 成人在线观看www| 久久er热在这里只有精品66| 在线观看欧美日韩| 中文字幕在线2019| 久久亚洲私人国产精品va媚药| 国模无码视频一区二区三区| 中文字幕久久精品一区二区 | 久久一区二区三区国产精品| 久久国产亚洲精品无码| 嗯用力啊快一点好舒服小柔久久| 欧美成人精品一区| 黄色小视频免费观看| 玉足女爽爽91| 黄色录像a级片| 99精品国产一区二区青青牛奶| 国产一区二区三区奇米久涩| 蜜乳av一区| 亚洲深夜福利网站| 国产精品无码白浆高潮| 国产精品免费视频一区| 在线观看免费看片| 黄色精品网站| 欧美黑人xxxxx| 日韩天堂在线| 欧美精品少妇videofree| 亚洲 国产 欧美 日韩| 午夜国产不卡在线观看视频| 在线免费看黄视频| 麻豆国产精品视频| 日本免费a视频| 福利片一区二区| 国产精品成人av在线| www 日韩| 日韩成人激情视频| 99热这里只有精品3| 亚洲影院久久精品| 国产一区二区三区四区五区六区| 秋霞电影一区二区| 隔壁人妻偷人bd中字| 婷婷精品在线观看| 18成人免费观看网站下载| 成人福利影视| 日韩一区视频在线| 屁屁影院在线观看| 欧美福利视频一区| 免费看一级视频| 亚洲精品国产一区二区三区四区在线| 精品无码在线视频| 欧美a一区二区| 免费毛片小视频| 亚洲色图欧美| 日韩中文字幕一区二区| 老司机亚洲精品一区二区| 国产精品九九九| www中文字幕在线观看| 久久国产精品久久久| 欧美69xxxxx| 精品在线欧美视频| 亚州视频一区二区三区| 日韩限制级电影在线观看| 97精品人妻一区二区三区在线| 欧美日韩国产专区|