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

The system been designed to give students quick and easy ____ to the digital resources of the library.

A.access B. passage C. way D. approach

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

There are several advantages in planting trees:they firm the soil,soak(滲透) up extra water and take carbon dioxide out of the atmosphere. However,it now turns out that planting trees could add to global warming. We all know that tree roots do a great job of keeping soil firmly on the ground and out of the wind's power. The problem is that some of the dust clouds play an important part in soaking up carbon dioxide.

Huge dust storms blow out over the oceans from  dry parts of North Africa and Central Asia. Tons of dust are lifted and left as a thin film over the ocean surface.

Dust from China is carried east and left in the Pacific Ocean. If a tree­planting programme there is successful and the dust supply reduced, the net result may be that less carbon dioxide gets locked away in the ocean.

Andy,an environmental scientist has spent the past few years studying dust and says his work shows clearly the complexity of the system. For this reason the need is to focus on cutting carbon dioxide giving off rather than doing anything else.

Robert, an American scientist, has  shown that when native grassland areas are invaded by trees, carbon is lost from the soil. “We are studying why the soil carbon disappears,but one theory is that trees do a lot more of their growing above ground compared to grass, so less carbon goes directly into the soil from trees.” said Robert.

In wet areas of the world, the gain from trees absorbing carbon dioxide above ground seems to be outweighed by the loss of carbon from the soil below ground.

Countries that plan to fight against global warming by planting trees may have to think again. Solutions to environmental problems are often more complex than they first appear,and understanding the Earth's climate is a very great challenge.

60.People usually hold the opinion that ________.

A. huge dust storms can destroy carbon dioxide

B. planting trees could reduce global warming

C. huge dust storms can destroy the oceans on the Earth

D. planting trees is the only way to control huge dust storms

61.Andy, an  environmental  scientist, believes  that________.

A. environmental problems are more complex than expected                 

B. trees shouldn't have been planted in dry places

C. dust plays a more important part than trees

D. carbon dioxide is harmful to everything

62.Robert's experiment proves that ________.

A. trees absorb more carbon than grass

B. carbon can turn grass into dust

C. less carbon can make trees grow faster

D. grassland areas should be covered by forests

63.The best title for this passage is “________”.

A. The importance of planting trees

B. The dust clouds soak up carbon dioxide

C. Is it really useful to plant trees to reduce global warming?

D. Why the soil carbon disappears

查看答案和解析>>

科目:高中英語 來源:2010-2011學年廣西省桂林中學(上)學期高三期末英語卷 題型:閱讀理解

A serious problem for today’s society is who should be responsible for our elderly(老年人) and how to improve their lives. It is not only a financial problem but also a question of the system we want for our society. I would like to suggest several possible solutions to this problem.
First, employers should take the responsibility for their retired employees. To make this possible, a percentage of profits should be set aside for this purpose. But when a company must take life-long responsibility for its employees, it may suffer from a commercial disadvantage due to higher employee costs.
Another way of solving the problem is to return the responsibility to the individual. This means each person must save during his working years to pay for his years of retirement. This does not seem a very fair model since some people have enough trouble paying for their daily life without trying to earn extra to cover their retirement years. This means the government might have to step in to care for the poor.
In addition, the government could take responsibility for the care of the elderly. This could be financed through government taxes to increase the level of pensions(養老金). Furthermore, some in-situation should be created for senior citizens, which can help provide a comfortable life for them. Unfortunately, as the present situation in our country shows, this is not a truly viable answer. The government can seldom afford to care for the elderly, particularly when it is busy trying to care for the young.
One further solution is that the government or social organizations establish some working places especially for the elderly where they are independent.
To sum up, all these options(選擇)have advantages and disadvantages. Therefore, it is reasonable to expect that some combination of these options may be needed to provide the care we hope to give to our elderly generations.
【小題1】What is the passage mainly about?

A.The problems faced by the old in society.
B.Why we should take responsibility for the old.
C.How we can improve the lives of the old.
D.Where the old can go to get their pensions.
【小題2】According to the passage, how can the government help to improve the lives of retired people?
A.Set aside some profits to help people with problems after they retire.
B.Increase savings levels of people during their working years.
C.Increase the discounts for food and transport for the old.
D.Make available pensions for those who have retired.
【小題3】The underlined word “viable” most probably means “__________”.
A.impossibleB.practicalC.usefulD.successful
【小題4】What can be concluded from the passage?
A.Taking care of the old is mainly an issue of money.
B.Employers should allow their workers to retire at a later age.
C.Becoming independent should be the goal of most old people.
D.There is no single solution to the problems of the old.
【小題5】What is the writer’s main purpose in writing this article?
A.To point out the need for government support for old people.
B.To make general readers aware of the problems of retired people.
C.To discuss some possible solutions to an important social problem.
D.To instruct retired people on how they can have a happier life.

查看答案和解析>>

科目:高中英語 來源:2015屆山東省高一上學期期末考試英語試卷(解析版) 題型:單項填空

The system has been designed to give students quick and easy ______ to the digital resources of the library.

A.passage           B.way              C.approach          D.access

 

查看答案和解析>>

科目:高中英語 來源:2012-2013學年陜西省高三上學期期中考試英語試卷(解析版) 題型:閱讀理解

His first successful fight was for the equal rights of black people in South Africa. Then, as the first black president, he fought to unite the country and organize the government. Now Nelson Mandela has set his sights on a new enemy, AIDS.

On March 19 the 82-year-old, former president, hosted his second AIDS-awareness concert. He warned that 25 million people in Africa were already infected with the fatal disease.

Mandela was born in a small village in South Africa in 1918. He was adopted by the chief of his tribe and could have been a chief himself and lived a happy country life.

But he refused to be a chief when his people lived under racial discrimination(歧視). He decided to fight for equal rights for all the people in South Africa. Before 1990, under the country’s Racial Segregation Law, colored and white people lived separately. Black people were treated unfairly even when taking a bus. Blacks had to stand at the back of the bus to make room for white people even when there were only a few of them on board.

For his opposition to the system, Mandela was arrested and spent 27 years in prison. He was freed in 1990 and became the president of the country after the first election were held in which everyone could vote.

Mandela was not only a political fighter who attacked with speeches. He was also a trained boxer and fought in the ring when he was young.

“Although I did not enjoy the violence of boxing, I was interested in how one moved one’s body to protect oneself, how one used a strategy both to attack and retreat”, he wrote in his autobiography.

As a skillful fighter, he chose music as his weapon against AIDS. He hopes to win another victory against AIDS.

1.When was Mandela arrested?

A.In 1963

B.In 1990

C.When he refused to be a chief

D.When he became the president

2.Nelson Mandela succeeded in doing the following except _______.

A.winning the equal rights for the black people in South Africa

B.Uniting South Africa

C.organizing a government in South Africa

D.controlling the spread of AIDS

3.If Nelson Mandela hadn’t fought against racial discrimination, he_______.

A.could have been the president of South Africa

B.could still have lived a happy life

C.could have been in a difficult situation

D.would have been an excellent boxer

4.Which of the following statements can best describe the life of Nelson Mandela?

A.struggle is his life

B.sports make his fame

C.fight for equal rights

D.a great fighter against government.

 

查看答案和解析>>

科目:高中英語 來源:0910學年廣東省湛江市高二上學期期末考試 題型:閱讀理解

 

A solar pump(太陽能水泵 ) was built in a desert small village. The pump used the deserts most common resource – sunlight, to increase its greatest need, water. Solar collectors were used to collect the sun’s rays. Flat collectors were used instead of concave (凹的) collectors. Flat collectors can be still and do not have moving parts, which can be broken in sandstorms. The system used the 20C temperature difference between the solar collectors and the ground water to work a steam engine which pumped water from under the ground.

Some of the social effects of the new pump were planed for. Children aged 6—15 used to meet the old men to receive the informal education there. In order to replace this, a school was also included in the project. But the project had not considered the traditional power structure of the village. As soon as the foreign experts left, the two richest men in the village took control of the pump and started selling water to everyone else. The result was that the majority of the people were poorer than before.

16. The basic function of the solar collectors is to ______

        A. pump water           B. gather the sun’s rays 

        C. start engine            D. raise the temperature

17. According to the passage which of the following statements could be true?

        A. Solar collectors were concave collectors                      

    B. Flat collectors can be broken in sandstorms.

        C. Concave collectors may be have moving parts.        

    D. A solar pump is a solar collectors.

18. The underground water is pumped by means of ______.

        A. solar collectors    B. the 20C temperature difference          C. the system  D. a steam engine

19. Another plan was also included that_____.

        A. some new pumps were to built ,too

        B. children from aged 6—15 were required to meet old men.

        C. a new school would take the place of the informal education.

        D. the richest men in the village would control the pump.

20. From this passage , it can be inferred that_____.

        A. the project was good , but people there disliked it.

        B. only few rich men supported the project.

        C. the project was successful even though it only brought good social effects to fewer villagers.

        D. the project was a complete failure, because the result was against its purpose.

 

查看答案和解析>>

同步練習冊答案
高清欧美电影在线| 一级欧美一级日韩片| 欧美lavv| 亚洲一区二区三区毛片| 2019中文字幕免费视频| 久久激情视频久久| 一个人www欧美| 亚洲风情亚aⅴ在线发布| 欧美视频日韩视频在线观看| 亚洲女性喷水在线观看一区| 91美女蜜桃在线| 丁香婷婷综合激情五月色| 美女网站久久| 免费在线亚洲| 久久精品道一区二区三区| 黄色成人精品网站| 亚洲影视一区| 欧美国产精品| 亚洲视频观看| 亚洲另类自拍| 国产精品久久久久9999高清| 国产日韩欧美一区| 国产精品综合| 免费精品视频| 日韩av一级电影| 全国精品久久少妇| 久久99精品久久久久久| 老司机午夜精品99久久| 久久精品国产77777蜜臀| 久久精品国产一区二区三区免费看| 玖玖精品视频| 精品一区二区三区在线播放视频 | 日本亚洲欧美成人| 欧美在线一区二区三区四| 97视频在线观看成人| 奇米一区二区三区四区久久| 国产成人91久久精品| 国产日韩精品在线播放| 91夜夜揉人人捏人人添红杏| 成人91视频| 蜜桃精品久久久久久久免费影院| 日本一区二区三区视频在线观看 | 欧美性猛交xxxx| 欧美在线免费视屏| 日韩三级视频在线观看| 亚洲国产精品小视频| 亚洲欧美三级在线| 欧美大奶子在线| 欧美中文字幕在线观看| 成人亲热视频网站| 黑人另类av| 欧美日韩中文国产| 欧美精品1区2区3区| 欧美一二三在线| 日韩乱码在线视频| 久久精品精品电影网| 国语自产在线不卡| 国产精品网站大全| 久久久久久草| 国产女主播自拍| 日韩欧美xxxx| 最新日本中文字幕| 自拍偷拍第9页| 成人午夜淫片100集| 99精品视频在线播放免费| 中文字幕一区二区三区域| 久久手机免费观看| а√在线天堂官网| 不卡一区视频| 成人影视亚洲图片在线| 国产日韩视频| 91蜜桃网址入口| 亚洲图片欧美色图| 日韩欧美一区二区在线视频| 中文字幕av一区二区三区谷原希美 | 一区二区三区美女视频| 欧美日韩精品高清| 中文字幕亚洲一区二区三区五十路| 国内成人精品视频| 国产一区福利视频| www.亚洲视频.com| 一级全黄裸体片| 九九热国产在线| 亚洲第一页综合| 天堂地址在线www| 亚洲精品大片| 久久久久国产| 高清在线成人网| 一区二区在线电影| 精品国产乱码久久久久久老虎 | www.麻豆av| av在线之家电影网站| 久久国产精品影片| 欧美国产精品v| 欧美丝袜第一区| 亚洲第一免费播放区| 美女少妇精品视频| 99porn视频在线| 欧美日韩福利在线| 国产黄色三级网站| 国产免费av一区| 在线免费视频你懂得| 欧美少妇网站| 欧洲视频一区| 国产一区在线精品| 亚洲国产视频a| 亚洲欧美成人精品| 91精品免费看| 久久视频这里有精品| 成人黄色免费网址| 亚洲影院一区二区三区| 日韩精品成人av| 亚洲不卡在线| 久久午夜视频| 一区二区三区在线免费观看| 亚洲精品久久久久中文字幕二区| 国产激情999| 国产精品啪啪啪视频| 日韩成人av影院| 这里只有精品免费视频| 黄色免费在线网站| 夜色77av精品影院| 国产成人精品影院| 欧美性猛交一区二区三区精品| 久久天天躁夜夜躁狠狠躁2022| 国产精品sss| 亚洲另类第一页| 手机av免费在线观看| 粉嫩喷白浆久久| 中文字幕在线看片| 一本久久a久久免费精品不卡| 亚洲第一视频在线观看| 国产欧美日韩一级| 国产精品久久久久久久久晋中 | 99国产精品久久久久久| 亚洲国产综合久久| wwwxxx在线观看| 美女少妇全过程你懂的久久| 丁香婷婷综合网| 3atv在线一区二区三区| 国产精品国产自产拍高清av水多| 日本午夜激情视频| 国产一级一级片| 蜜桃视频在线观看www社区| 免费欧美一区| 久久久久久一级片| 亚洲精品一区二区在线| 久久久久久草| 黄瓜视频污在线观看| 四虎永久在线观看| 国内精品久久久久久久久久久| 久久久久久久久久综合| 成人三级黄色免费网站| 天堂在线精品| 久久青草国产手机看片福利盒子| 欧美精品一区二区三区蜜桃视频| 91蜜桃网站免费观看| 欧美精选一区二区| 欧美天天综合色影久久精品| 米奇777在线欧美播放| 国产精品色哟哟| 亚洲午夜未满十八勿入免费观看全集| 激情五月综合色婷婷一区二区| 成人免费播放视频| 亚洲国产成人精品一区二区三区| 欧美少妇激情| 国产一区二区在线看| 精品欧美乱码久久久久久| 国产伦精品一区二区三区四区免费| 欧美午夜精品一区二区| 天天综合网天天综合| 国产精品流白浆在线观看| 91女厕偷拍女厕偷拍高清| 亚洲系列中文字幕| 欧美性受xxxx黑人猛交88| 欧美日韩成人免费观看| 羞羞污视频在线观看| 99精品福利视频| 欧美性xxxxx极品少妇| 91视频九色网站| 熟妇高潮一区二区| 偷拍25位美女撒尿视频在线观看| 国产99精品| 一片黄亚洲嫩模| 国产91热爆ts人妖在线| 伊人精品视频在线观看| 天天操天天操天天操| 久久丝袜视频| 中文字幕视频一区| 国产成人一二片| 国产一级淫片a| 一二三四区在线观看| 亚洲性人人天天夜夜摸| 欧美在线观看视频一区二区| 国产尤物视频在线| 69av成人| 精品一区二区影视| 国产偷亚洲偷欧美偷精品| 中文精品一区二区三区| 国产成人无码精品| 成人黄页网站视频| 久久综合九色综合97婷婷女人| 日韩在线免费观看视频| 水蜜桃色314在线观看| 国产一区二区麻豆| 日韩av系列| 亚洲第一综合色| 99久久久精品免费观看国产 | av在线三区| 视频一区二区三区中文字幕| 亚洲电影成人av99爱色| 日韩精品一区二区在线视频| 国产乱人乱偷精品视频| 亚洲小说图片| 任你弄精品视频免费观看| 黄色国产网站在线播放| 欧美午夜不卡| 日韩欧美色电影| 男人天堂成人网| 亚洲一区精品在线观看| 亚瑟一区二区三区四区| 欧美日韩精品在线视频| 精品在线视频一区二区| 你懂的国产在线| 国产精品xxx在线观看| 亚洲a一区二区| 麻豆精品传媒视频| 精品一区二区无码| 国产日产精品一区二区三区四区的观看方式 | 成人永久aaa| 亚洲91精品在线| 国产精品三级在线观看无码| www.综合| 国产亚洲人成网站| 国产精品爽爽ⅴa在线观看| 日本二区三区视频| 国产情侣一区二区三区| 亚洲欧美视频在线观看| 99在线视频免费观看| 国产一级淫片a| 极品一区美女高清| 欧美主播一区二区三区美女| 中文字幕久精品免| 欧美一级视频免费| 亚洲一区二区伦理| 久久九九亚洲综合| 欧美熟妇精品一区二区蜜桃视频| h片在线观看| 国产精品久线在线观看| 懂色av一区二区三区在线播放| av资源免费观看| 欧美女优在线视频| 日韩欧美成人一区二区| 亚洲视频在线观看一区二区三区| 福利成人在线观看| 成人污视频在线观看| 国产成人一区二区在线| 久久精品一级片| 奇米777国产一区国产二区| 欧美欧美午夜aⅴ在线观看| 亚洲精品无码国产| 黄色网址在线播放| 成人中文字幕合集| 亚洲qvod图片区电影| 香蕉影院在线观看| 亚洲色图网站| 最近2019中文字幕第三页视频| 日韩精品视频一区二区| 欧美xnxx| 色呦呦日韩精品| 黄色片网址在线观看| 日日夜夜精品一区| 欧美国产精品中文字幕| 久久久久久久久久码影片| 精品国产av一区二区三区| 国产日韩欧美一区| 国内揄拍国内精品少妇国语| 欧美日韩精品在线观看视频| 在线看成人短视频| 亚洲精品720p| 午夜剧场免费看| 亚洲成人高清| 51精品国自产在线| 欧美在线aaa| 欧美性xxx| 欧美午夜精品久久久| 欧在线一二三四区| 黄色激情在线播放| 亚洲成a人在线观看| 亚洲精品无码国产| 久久亚洲资源| 亚洲国产sm捆绑调教视频| 岛国大片在线播放| gogo在线观看| 亚洲成人综合视频| 中国丰满人妻videoshd| 国产777精品精品热热热一区二区| 日韩美女久久久| www.一区二区.com| 伊人影院在线视频| 欧美日韩精品在线| 杨幂毛片午夜性生毛片| 欧洲一级精品| 欧美一区二区三区喷汁尤物| 国产精品熟妇一区二区三区四区| 日韩精品一区二区三区中文在线| 欧美成人女星排名| 中文字幕免费视频| 成人精品亚洲| 欧美激情免费观看| 精品久久久久久久久久久久久久久久久久| 亚洲激情视频| 国产精品久久网| 黄色av网址在线| 2021国产精品久久精品| 亚洲亚洲精品三区日韩精品在线视频| 1769在线观看| 精品国产老师黑色丝袜高跟鞋| 天天插天天操天天射| 国产福利91精品一区二区| 欧美亚洲综合视频| 成人国产亚洲欧美成人综合网| 国产美女精品在线观看| 在线观看免费国产小视频| 日本一区二区三级电影在线观看| 天堂v在线视频| 女同一区二区免费aⅴ| 在线观看网站黄不卡| 不许穿内裤随时挨c调教h苏绵| 欧美人妖在线观看| 操日韩av在线电影| 中文字幕有码无码人妻av蜜桃| 狠狠色丁香婷婷综合久久片| 玖玖玖精品中文字幕| 1区2区3区在线观看| 在线区一区二视频| 女人被狂躁c到高潮| 欧美激情理论| 国产精品第2页| 992tv在线影院| 亚洲婷婷综合色高清在线| 蜜臀视频一区二区三区| 日韩精品一级| 欧美激情图片区| av中文字幕第一页| 国产女同性恋一区二区| 日日摸日日碰夜夜爽av| 欧美影院精品| 欧美二区在线播放| www.av导航| 亚洲精品一卡二卡| 亚洲一区二区三区四区精品| 日韩理论在线| 成人淫片在线看| 一本一道波多野毛片中文在线| 欧美日韩在线免费| 人妻一区二区视频| 免费国产自线拍一欧美视频| 狠狠久久综合婷婷不卡| 在线heyzo| 亚洲国产美女精品久久久久∴| 国产亚洲欧美精品久久久久久 | 在线视频超级| 亚洲欧美日韩国产精品| 成人免费视频国产免费| 91免费小视频| 亚洲人辣妹窥探嘘嘘| 久草精品在线| 国产在线精品播放| 色影视在线观看| 精品成人一区二区三区| 黄色片免费观看视频| 99久久精品免费看| 色婷婷综合久久久久中文字幕 | 久久免费的精品国产v∧| wwwwww.色| 91一区二区| 国产精品久久久久免费| 成av人片在线观看www| 一个人www欧美| www.麻豆av| 日韩欧美在线字幕| 人妻久久一区二区| 成人99免费视频| av亚洲天堂网| 狠狠爱综合网| 一区高清视频| 国产福利资源一区| 国产伊人精品在线| brazzers在线观看| 久久精品2019中文字幕| 天堂av手机版| 欧美日韩视频在线一区二区| 国产一级特黄毛片| 国产色爱av资源综合区| 亚洲欧美高清在线| 国产第一页在线| 久久婷婷亚洲| 久久精品国产精品亚洲精品色| 国产成人视屏|