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

D

Plastic is one of the most important technological discoveries of the 20th century. However, it may soon be replaced. The new development- liquid wood- can replace plastics in all branches of modern-day industries.

Plastic as a material enjoys the biggest demand in the modern world, but it does have a number of drawbacks. First and foremost, plastic isn’t recyclable. Secondly, it contains toxins (毒物) helping develop cancerous diseases. Finally, it’s made of oil and oil reserves aren’t endless.

The liquid wood technology is likely to replace plastic and providing mankind with new materials for many years ahead. Norbert Eisenfreich, a senior researcher at the Faunhofer Institute for Chemical Technology in Germany (ICT), said that arboform, the new material, is made of lignin(木素質(zhì)), which can be obtained from soft tissues of wood. Once mixed with several other matenals, it turns into solid and non-toxic alternative for plastics.

ICT team leader Emilia Regina Inone-Kauffmann said the wood-working industry separates wood into three basic components, including lignin. Lignin isn’t used for the production of paper. Specialists of ICT mixed lignin with several natural materials and thus invented the material which could be melted and molded (鑄型).

When solid, arboform looks like plastic and possesses tho qualitie of polished wood. It can be used for the production of any items. Arboform is already used for the production of car parts which require extra strength. In addition, liquid wood can be recycled repeatedly. The material preserved all of its qualities even if it’s reprocessed ten times.

However, the new invention doesn’t enjoy an extensive use due to the high content of sulfur(硫) in it. German researchers are sure to reduce the amount of sulfur by 90% very soon to make arboform usable for home needs.

71. According to the passage, plastic_______.

A. helps us to reduce the use of petrol

B. helps to protect our environment in some way

練習(xí)冊系列答案
相關(guān)習(xí)題

科目:高中英語 來源: 題型:

--- Excuse me. Can I borrow your ______ pencil-box?

    --- Certainly, here it is.   

    A. blue cheap plastic 

    B. plastic blue cheap   

    C. cheap blue plastic  

    D. plastic cheap blue

查看答案和解析>>

科目:高中英語 來源: 題型:閱讀理解

Have you ever stayed in a hotel? Most Chinese hotels often provide guests with things like disposable (一次性的) toothbrushes, toothpaste, shampoo and slippers. Many guests like the idea because they don't have to bring their own. But, if you travel to Beijing, remember to bring your own things. Starting from June, some hotels in Beijing will no longer provide guests with these disposables. They want to ask people to use less disposable things.

Many disposable things are made of plastic. People throw them away after only using them once. It is a waste of natural resources and is very bad for the environment. Do you know, one Chinese person makes as much as 400kg of waste a year! Most of that waste comes from disposable things. In Beijing, people throw away about 19,000 tons of plastic bags and 1,320 tons of plastic lunch bowls every year! Plastic can take between 100 and 400 years to break down. So the less plastic we throw out, the better. So, wherever you travel, bring your own things and use them again and again.

Back at home and school, you can also do something to make our world a better place. Try to do these things in your daily life:  Use cloth shopping bags, not plastic ones. After using a plastic bag, wash it out and let it dry. Then you can use it over and over again. Do not use paper cups. At your school canteen(食堂), use your own bowl and chopsticks instead of disposable ones.

Some Beijing hotels will no longer provide guests with ____.

A. cheap food and drink                   B. disposable things

C. good service                         D. free TV programmes

Which of the following is NOT true?

A. Many disposable things are made of plastic.

B. Throwing disposable things away is a waste of natural resources.

C. Plastic is very bad for the environment.

D. Plastic breaks down easily.

What can we do to make our world a better place at home and school?

A. Use shopping bags made of plastic.          B. Do not throw away paper cups.

C. Use disposable plates, bowls and chopsticks.

D. Do not forget to reuse daily necessities.

We can tell from the story that ____.

A. people don't like disposable things at all

B. we can't use paper or plastic bowls at school

C. we should use less plastic things and protect our environment

D. hotels won't provide disposable things because they want to save money

查看答案和解析>>

科目:高中英語 來源:2013-2014學(xué)年四川儀隴縣第二中學(xué)高二9月月考卷(解析版) 題型:完型填空

On a Friday   11  , a poor young artist stood at the gate of the subway station, playing his violin. The music was   12  , and many people   13   and put some money into the   14   of the young man.

The next night, the young artist took out a large piece of   15   and laid it on the ground.     Then he began   16  . The music sounded more pleasant. Some people gathered and they found the   17   on that paper. “Last night ,a gentleman put a(n)   18  thing into my hat. Please come to get it back.” When the people saw that, they felt very curious and began to   19   what it could be. After about half an hour, a man   20   there in a hurry and said ,“It can’t be true!You ...you ...”

The young violinist asked, “Did you   21   something?”

“Lottery (彩票).”the man answered  22  .

The violinist took out a lottery ticket. “Is it?”he asked.

The man was too   23   to say a word ...George Sang   24   a lottery ticket a few days ago. The awards(獎)opened yesterday and he won $500,000. So lucky and excited did he feel that he   25   50 dollars and put it in the hat when hearing the music. However, the lottery ticket was also thrown into the hat without being noticed. The violinist found the lottery ticket. Thinking that the owner would  26   to look for it, he came back to where he was given the lottery ticket.

Someone asked the violinist   27   he returned the lottery ticket to the man. He said, “   28   I don’t have much   29  , I live happily; but if I lose   30   I won’t be happy forever.”

1.A. morning       B. night        C. afternoon      D. noon

2.A. quiet       B. exciting      C. beautiful       D. familiar

3.A. passed by     B. went away    C. slowed down   D. speeded up

4.A. wallet        B. box          C. bag           D. hat

5.A. paper         B. cloth        C. glass          D. plastic

6.A. singing       B. playing      C. working      D. waiting

7.A. poems       B. articles   C. words    D. texts

8.A. important     B. fantastic     C. dangerous     D. interesting

9.A. argue    B. care       C. expect   D. guess

10.A. came    B. rushed     C. walked   D. left

11.A. get     B. find       C. forget   D. lose

12.A. quickly      B. anxiously      C. seriously       D. carefully

13.A. confused     B. anxiously       C. excited      D. surprised

14.A. bought  B. made       C. found    D. sold

15.A. handed out   B. took out    C. hunted for   D. picked up

16.A. forget           B. remember     C. return       D. picked up

17.A. where        B. why      C. when         D. how

18.A. Because     B. Although       C. If     D. While

19.A. money    B. food      C. time     D. luck

20.A. friendship      B. honesty      C. hope        D. love

 

查看答案和解析>>

科目:高中英語 來源:陜西省2010屆高三第七次模擬考試英語試題 題型:閱讀理解

Since its invention 100 years ago, plastic , the superstar of the technological age, has become ugly and ungreen . But that’s about to change. An exhibition at London’s Science Museum this week could put it back on the cutting edge of science.

Have you ever hesitated in donating blood? The invention of “plastic blood” might make you feel better.

British scientists are working on the artificial blood as a replacement for real blood in emergency situations. It is made of plastic molecules(分子 ) and can join oxygen and transport it around the body. As a red, honey-like glue , plastic blood can be carried around conveniently . You just add water to make as much blood as you need.

The cells  of our body are strict about what molecules the let in and out . For example , if we inject protein or DNA  directly into the body, our immune ( 免疫 ) SYSTEM WILL DESTROY IT BEFORE IT REACHES THE CELLS.

To get around this , a British scientist has created drug-carrying plastic balls that fool the body into thinking they are natural. Once inside the cell, their contents are spread out through a small controlled explosion.

Skin transplants  are widely done these days. But removing a piece of skin from, say , the bottom to plant it on the face  can hurt and be troublesome.

The British company, Celltran, is working on plastic skin. Using plastic, they plan to take a small piece of the patient’s skin and grow it into an extra lay of skin on top of the plastic. a

The plastic  feels similar to skin, so skin cells like to grow on it. The plastic then gradually disappears, without any reaction or infection .

1. What would be the best title for the text?

A. The superstar of technological age

B. An exhibition at London’s Science Museum

C. No more “white pollution”

D. Plastic takes on a new life

2. Which of the following will be on display at the exhibition at London’s Science Museum?

A. Plastic cells               B. Plastic skin

C. Plastic molecules           D. Plastic transplants

3. The phrase “get around “ in Paragraph 5 means closest to ______.

A. overcome  B. end    C. ensure     D. pass

4.Which of the following is true according to the text?

A. Plastic blood will be injected into the body in drug-carrying plastic balls

B.The plastic skin will remain a part of the new skin

C. Plastic blood will take the place of real blood

D. Plastic blood contains a lot of water

 

查看答案和解析>>

科目:高中英語 來源:西藏拉薩中學(xué)2009-2010學(xué)年高二第一次月考(藏文班)試題(英語) 題型:閱讀理解

 

第三部分:閱讀理解 (共20小題;每小題2分,滿分40分)

請認(rèn)真閱讀下列短文,從短文后各題所給的A、B、C、D四個選項中,選山最佳選項,并在答題紙上將該項涂黑。

Have you ever stayed in a hotel? Most Chinese hotels often provide guests with things like disposable (一次性的) toothbrushes, toothpaste, shampoo and slippers. Many guests like the idea because they don't have to bring their own. But, if you travel to Beijing, remember to bring your own things. Starting from June, some hotels in Beijing will no longer provide guests with these disposables. They want to ask people to use less disposable things.

Many disposable things are made of plastic. People throw them away after only using them once. It is a waste of natural resources (資源) and is very bad for the environment. Do you know, one Chinese person makes as much as 400kg of waste a year! Most of that waste comes from disposable things. In Beijing, people throw away about 19,000 tons of plastic bags and 1,320 tons of plastic lunch bowls every year! Plastic can take between 100 and 400 years to break down. So the less plastic we throw out, the better. So, wherever you travel, bring your own things and use them again and again.

Back at home and school, you can also do something to make our world a better place. Try to do these things in your daily life:  Use cloth shopping bags, not plastic ones. After using a plastic bag, wash it out and let it dry. Then you can use it over and over again. Do not use paper cups. At your school canteen(食堂), use your own bowl and chopsticks instead of disposable ones.

1. Why do many hotels provide guests with some disposable things?

A. Let their guests be convenient during their travelling.

B. Hope their guests use less disposable things.

C. Wish their guests to save money.

D. Want their guests to use more disposable things.

2. Some Beijing hotels will no longer provide guests with ____.

A. cheap food and drink                             B. disposable things

C. good service                                                  D. free TV programmes

3. Which of the following is NOT true?

A. Many disposable things are made of plastic.

B. Throwing disposable things away is a waste of natural resources.

C. Plastic is very bad for the environment.

D. Plastic breaks down easily.

4. What can we do to make our world a better place at home and school?

A. Use shopping bags made of plastic.           

B. Do not throw away paper cups.

C. Use disposable plates, bowls and chopsticks.  

D. Do not forget to reuse daily necessities(日用品).

5. We can tell from the story that ____.

A. people don't like disposable things at all

B. we can't use paper or plastic bowls at school

C. we should use less plastic things and protect our environment

D. hotels won't provide disposable things because they want to save money

 

查看答案和解析>>

同步練習(xí)冊答案
极品久久久久久| 成年人在线免费看片| 国产午夜精品视频一区二区三区| 国产亚洲精品av| 亚洲人妻一区二区| 欧美精品性生活| 在线播放第一页| 成人精品视频一区二区| 无码精品黑人一区二区三区| 日韩精品 欧美| 一区二区三区午夜| 中文字幕av网站| 性欧美18一19内谢| 国产伦精品一区二区三区四区 | 一女二男一黄一片| 国产一级大片免费看| 国产农村老头老太视频| 国产96在线 | 亚洲| 色窝窝无码一区二区三区| 午夜肉伦伦影院| 91精品国产高清91久久久久久 | 男女视频免费看| 日韩三级在线观看视频| 亚洲专区第一页| 久久久一本二本三本| 91精品人妻一区二区三区四区| 天天操,天天操| 国产人妻大战黑人20p| 日本中文字幕在线| 国产男女免费视频| 日本少妇xxxx| 国产一级免费视频| 丰满人妻av一区二区三区| 成人在线观看黄| 亚洲第一黄色网址| 久草视频在线免费| 9久久9毛片又大又硬又粗| 91九色蝌蚪porny| 国产www在线| 日韩免费视频播放| 最近中文字幕免费视频| 中文字幕在线视频第一页| 国模无码视频一区二区三区| 免费的av网站| 一级特黄录像免费看| 青青在线免费观看视频| 韩国三级hd中文字幕| 中文在线字幕免费观| 日韩av手机版| 久久久久久久久久网站| 天天舔天天干天天操| 国产无遮挡aaa片爽爽| 日韩精品久久一区二区| 三级视频网站在线观看| 一级特黄aaa| 亚洲一区二区三区观看| 四虎4hu永久免费入口| xxxx国产视频| 天天天天天天天干| 国产精品嫩草影院8vv8| 青草全福视在线| jizz日本免费| 国产黄色一级大片| 日韩欧美一级视频| 日本美女高潮视频| 只有这里有精品| 国产伦精品一区二区三区妓女| 国产又粗又猛视频| www.99re7.com| 蜜臀久久99精品久久久酒店新书| 91免费在线看片| 中文字幕在线国产| av中文字幕观看| 天天操天天摸天天干| 99久久国产宗和精品1上映| 国产传媒免费在线观看| 久久久国产精品无码| 成人av一区二区三区在线观看| 99精品视频99| 欧美一级小视频| 福利视频一区二区三区四区| 800av在线播放| 成人午夜视频一区二区播放| 无码任你躁久久久久久久| 久久综合在线观看| 成人在线观看黄| 大陆极品少妇内射aaaaaa| 欧美 日韩 成人| 在线成人精品视频| 亚洲美女综合网| 中文字幕人妻丝袜乱一区三区| 久久久久成人片免费观看蜜芽| www.浪潮av.com| 欧美一级爱爱视频| 超碰手机在线观看| 手机看片国产日韩| 国产毛片欧美毛片久久久| 五月婷婷狠狠干| 精品人妻伦一二三区久久| 中文字幕手机在线视频| 女人十八岁毛片| 免费在线黄色片| 波多野结衣免费观看| 中文字幕第21页| 成人羞羞国产免费网站| 免费特级黄色片| 91传媒免费视频| 91免费视频黄| 8x8x华人在线| 男女爱爱视频网站| 国产黄色激情视频| 日韩亚洲欧美视频| 777av视频| 国产97在线 | 亚洲| 少妇高潮喷水在线观看| 男人的天堂狠狠干| 北条麻妃在线观看| 天天干天天干天天干天天干天天干| 国产成人无码精品久久久性色| 精品国产一区二区三区无码| 欧美乱大交xxxxx潮喷l头像| 日韩日韩日韩日韩日韩| av免费播放网址| 9久久婷婷国产综合精品性色| 天天操天天爽天天射| av免费一区二区| 青娱乐免费在线视频| 国产一级生活片| 日韩av大片在线观看| 一级片视频在线观看| 一级特黄aaa| 好吊色一区二区| 男女性杂交内射妇女bbwxz| 久久久久麻豆v国产精华液好用吗| 国产 中文 字幕 日韩 在线| 国产调教在线观看| 69av.com| 日韩欧美在线播放视频| 91热视频在线观看| 91精品国产乱码久久久张津瑜| 老熟妇一区二区三区| 国产又黄又爽视频| 韩国三级与黑人| 成年人网站免费在线观看 | 国产福利免费视频| 久久久久国产免费| 337人体粉嫩噜噜噜| japanese在线播放| 久久精品影视大全| 天堂在线免费观看视频| 国产视频一区二区三区四区五区| 色婷婷视频在线| 人妻一区二区视频| 97精品国产97久久久久久粉红| 久久久久久久久久久视频| 在线观看国产一级片| 800av免费在线观看| 精品人妻无码一区二区色欲产成人 | 韩国中文字幕hd久久精品| 日韩av无码一区二区三区不卡| 亚洲a∨无码无在线观看| 日韩久久久久久久久久久久| 色免费在线视频| 成年人视频免费| 免费黄色在线播放| 日韩三级在线观看视频| 欧美v在线观看| 国产在线观看成人| 国产浮力第一页| 国产精品国产三级国产专业不 | 午夜剧场免费在线观看| 99精品视频播放| 黄色片中文字幕| 成人一区二区三区仙踪林| 欧美大片xxxx| 日韩成人av免费| 国产三级三级在线观看| xxx在线播放| 欧美 日韩精品| 亚洲欧美一二三区| avtt香蕉久久| 日韩在线综合网| 国产乱国产乱老熟| 91超薄肉色丝袜交足高跟凉鞋| 精品少妇人妻av一区二区| 一个色综合久久| 精品国自产拍在线观看| 刘亦菲国产毛片bd| 亚洲午夜精品一区| 黑人精品一区二区三区| 日韩在线中文字幕视频| 欧美成欧美va| 久久久久亚洲av无码麻豆| 国产又粗又大又爽的视频| 精品无码久久久久| 一二三区视频在线观看| 亚洲熟妇无码一区二区三区| 亚洲综合久久网| 中文字幕一二三四区| 日韩欧美黄色大片| 亚洲伦理在线观看| 真实国产乱子伦对白视频| 亚洲久久在线观看| 天天躁日日躁aaaa视频| 一级在线免费视频| 国模私拍视频在线| 中文字幕日韩精品无码内射| 无码人妻丰满熟妇区五十路| 国产精品20p| 99日在线视频| 亚洲av综合色区无码另类小说| 少妇人妻在线视频| 国产三级午夜理伦三级| 日韩不卡视频一区二区| 中文亚洲av片在线观看| 天天操天天操天天操天天操天天操| 九九视频在线观看| 日本一级片在线播放| 亚洲欧美国产中文| 亚洲啪av永久无码精品放毛片| 乱子伦视频在线看| 天堂在线资源网| 成人免费毛片网| 欧美 日韩 国产 在线| 免费在线观看视频a| 亚洲AV无码国产精品午夜字幕| 丰满人妻一区二区三区53号 | 色噜噜狠狠一区二区| 国产精品99精品无码视亚| 三级a在线观看| 26uuu国产| 91pony九色| 人妻丰满熟妇aⅴ无码| 国产九九九视频| 在线观看日本中文字幕| 国产精品第二十页| 国产探花视频在线| 无码人妻丰满熟妇奶水区码| 777777国产7777777| 中文字幕在线播出| 三上悠亚久久精品| 污视频网站免费观看| 色综合天天色综合| 中国毛片在线观看| 久久久久久久久久久久久av| 中文字幕在线有码| 国产精品午夜福利| 欧美黑人又粗又大又爽免费| 国产一级免费片| 国产在线成人精品午夜| 日日碰狠狠添天天爽| 在线观看免费视频a| aa视频在线播放| 潘金莲一级淫片aaaaa| 红桃视频一区二区三区免费| 91成人精品一区二区| 亚洲综合五月天婷婷丁香| 国产一线二线三线女| 一卡二卡三卡四卡五卡| 久久国产精品波多野结衣| 在线看的片片片免费| a级片在线播放| 中文字幕22页| 三级影片在线观看| 丁香花免费高清完整在线播放| 美女少妇一区二区| 中文字幕第69页| 超碰在线人人干| www.com污| 精品国产乱码久久久久久鸭王1| 一道本无吗一区| 日本免费观看网站| 91禁男男在线观看| 欧美熟妇另类久久久久久不卡| 永久av免费在线观看| 日本在线视频www色| 麻豆精品国产传媒| 9i看片成人免费看片| 免费黄色福利视频| 国产黄色大片免费看| 国产乱码久久久| 操人视频免费看| 91国在线高清视频| 18禁裸乳无遮挡啪啪无码免费| 国产偷人爽久久久久久老妇app | 麻豆中文字幕在线观看| 日本黄色www| 波多野结衣在线电影| 天天色综合天天色| 亚洲av无码一区二区三区在线| 五月激情丁香婷婷| 黄色污污视频软件| 亚洲图色中文字幕| 激情小视频网站| 欧美aaa级片| 亚洲欧美丝袜中文综合| 黄色污污网站在线观看| 加勒比av中文字幕| 国产一二三在线视频| 手机看片福利视频| 在线观看网站黄| 在线播放亚洲精品| 国产主播在线观看| 成人黄色一区二区| 成人免费在线视频播放| 奇米网一区二区| 国产二级一片内射视频播放 | 久久精品视频9| 欧美视频第三页| 免费观看亚洲视频| 战狼4完整免费观看在线播放版| 香蕉视频免费看| 国产精品久久免费| 亚洲天堂男人av| 国产一级片免费看| 久久99999| 国产精品va无码一区二区| 四虎免费在线视频| 美国一级黄色录像| 无码人妻精品一区二区三应用大全| 精品区在线观看| 中文字幕理论片| 国产精品7777| 五月天婷婷在线观看视频| 人妻丰满熟妇av无码区app| 97在线免费视频观看| 美国一级片在线观看| 美女被到爽高潮视频| 熟妇高潮精品一区二区三区| 亚洲 欧美 激情 小说 另类| 国产激情视频在线播放| 亚洲天堂中文字幕在线| 日韩乱码一区二区三区| 中文字幕第四页| 国产精品午夜影院| 黄色激情视频在线观看| 国产亚洲精品码| 欧美日韩偷拍视频| 992kp免费看片| 中文字幕 日韩 欧美| 成人免费毛片播放| 日本男人操女人| 国产视频一区二区三区在线播放 | 日本a视频在线观看| 日本福利视频在线观看| 国产 国语对白 露脸 | 波多野结衣办公室33分钟| 亚洲综合自拍网| 亚洲天堂av线| 动漫av免费观看| 91在线视频观看免费| 国产小视频精品| 国产视频1区2区3区| 天天综合成人网| 麻豆成人在线视频| 五月天婷婷综合网| 国产91国语对白在线| 国产精华7777777| 国产精品免费无遮挡| 国产极品久久久| 男插女视频网站| 999精品免费视频| 成人在线免费看视频| 在线观看 亚洲| 国产精品特级毛片一区二区三区| 国产精品久久久久毛片| 欧美特级特黄aaaaaa在线看| 91丨porny丨九色| 免费a级黄色片| 黄色片子在线观看| 久久精品xxx| 亚洲最大综合网| 国产在线综合网| 波多野结衣黄色网址| 精品国自产在线观看| 人妻体体内射精一区二区| 精品人妻一区二区三区日产乱码卜| 久久亚洲AV成人无码国产野外| 国产亚洲精品精品精品| 看一级黄色录像| 成人免费毛片播放| 国产一级二级三级| 一级日韩一级欧美| 国产香蕉精品视频| 婷婷丁香综合网| 国产自产在线视频| 手机av在线网站| 亚洲综合成人av| 亚洲 精品 综合 精品 自拍| 国产精品无码网站| 一本色道久久88亚洲精品综合 | 青少年xxxxx性开放hg| 欧美 日韩 亚洲 一区| 91亚洲精品久久久蜜桃借种| 国产又大又黄又粗| 高潮毛片7777777毛片| 国产三级av在线播放| 日韩国产成人无码av毛片| 一级黄色在线播放| 亚洲一区二区三区网站|