Broken rubber bands and flat tires requiring ...

试题详情

Broken rubber bands and flat tires requiring replacement could soon be a thing of the past．

French researchers have developed a new kind of rubber that can repair itself when broken．The new rubber is made from widely available materials including vegetable oil and a common industrial chemical．All the materials are considered safe to the environment and can be easily reused．

The best part is that the new rubber can be repaired and used again and again without losing its strength or ability or stretch．When cut, the rubber can be made new again, simply by pressing the two broken ends back together．

The product can be repaired at room temperature, around twenty degrees Centigrade；other self-healing materials require higher temperatures for repair．

Traditionally, rubber substances are made from huge molecules（分子）connected by strong chemical links, or bonds．The new rubber is made of smaller molecules．The molecules are linked together using hydrogen bonds．When connected in this way, the molecules act like one long molecule, forming what is called supramolecular networks（超分子网）．When the rubber is cut, the molecules attempt to connect with whatever molecule is near them．When pressed together, the molecules are able to repair themselves at the molecular level, making the repaired rubber like new．

However, time is an important element in the process．If the broken ends are not brought together quickly, a repair is not possible．This is because molecules will form bonds with molecules on their own side．The inventors say the surfaces of the rubber can be repaired within a week of being separated．

The rubber is the creation of scientists at the Industrial Physics and Chemistry Higher Education Institution in Paris．The organization is part of France's National Center for Scientific Research．The new material is described in greater detail in the research publication Nature．

1.According to the introduction, which of the following is NOT the advantage of the new rubber?

A．It can be made as easily as common rubber．

B．It is environmentally-friendly．

C．It can repair itself at room temperature．

D．It is made of smaller molecules．

2.What does the 5th paragraph mainly tell us?

A．Why the new rubber is unique．

B．Why the new rubber can repair itself．

C．The new rubber is made from huge molecules．

D．The new rubber is different from the common rubber．

3.If we want to know more about the technology of this kind of new rubber, where can we get the information?

A．In the researchers' diary． B．In a guide book．

C．In a research magazine． D．In a newspaper．

高二英语阅读理解中等难度题

少年，再来一题如何？

试题答案

试题解析

相关试题

Broken rubber bands and flat tires requiring replacement could soon be a thing of the past．
French researchers have developed a new kind of rubber that can repair itself when broken．The new rubber is made from widely available materials including vegetable oil and a common industrial chemical．All the materials are considered safe to the environment and can be easily reused．
The best part is that the new rubber can be repaired and used again and again without losing its strength or ability or stretch．When cut, the rubber can be made new again, simply by pressing the two broken ends back together．
The product can be repaired at room temperature, around twenty degrees Centigrade；other self-healing materials require higher temperatures for repair．
Traditionally, rubber substances are made from huge molecules（分子）connected by strong chemical links, or bonds．The new rubber is made of smaller molecules．The molecules are linked together using hydrogen bonds．When connected in this way, the molecules act like one long molecule, forming what is called supramolecular networks（超分子网）．When the rubber is cut, the molecules attempt to connect with whatever molecule is near them．When pressed together, the molecules are able to repair themselves at the molecular level, making the repaired rubber like new．
However, time is an important element in the process．If the broken ends are not brought together quickly, a repair is not possible．This is because molecules will form bonds with molecules on their own side．The inventors say the surfaces of the rubber can be repaired within a week of being separated．
The rubber is the creation of scientists at the Industrial Physics and Chemistry Higher Education Institution in Paris．The organization is part of France's National Center for Scientific Research．The new material is described in greater detail in the research publication Nature．
1.According to the introduction, which of the following is NOT the advantage of the new rubber?
A．It can be made as easily as common rubber．
B．It is environmentally-friendly．
C．It can repair itself at room temperature．
D．It is made of smaller molecules．
2.What does the 5th paragraph mainly tell us?
A．Why the new rubber is unique．
B．Why the new rubber can repair itself．
C．The new rubber is made from huge molecules．
D．The new rubber is different from the common rubber．
3.If we want to know more about the technology of this kind of new rubber, where can we get the information?
A．In the researchers' diary． B．In a guide book．
C．In a research magazine． D．In a newspaper．

高二英语阅读理解中等难度题查看答案及解析
Last month we spent so much to have the roof　　　　 , for it was broken.
A.replaced B.replacing C.to replace D.being replaced

高二英语单项填空中等难度题查看答案及解析
Justin’s bedroom was so full of flat bicycle tires, bent tennis rackets, deflated（瘪掉的）basketballs, and games with missing pieces that you could barely get in the door. His parents pleaded with him to clean out his room.
“What use is a fish tank with a hole in the bottom?” his father asked. But Justin simply smiled and repeated his motto, “Never throw anything out, you never know when it might come in handy.”
When Justin was away from home, he always carried his blue backpack--a smaller version of his bedroom--a place to store the many objects that he collected. It was so worn and stretched that it hardly resembled a backpack anymore.
Justin had earned a reputation for figuring things out and getting people out of otherwise hopeless situations. Many of his classmates and neighbors sought him out when they needed help with a problem. On the first day of school, his friend Kenny, came looking for Justin.
“Do you think you have something in your bag that could help me remember my locker combination?” he asked. “I lost the piece of paper it was written on. I have a science class in two minutes and if I'm late on the first day it’ll make me look bad for the rest of the year.” Kenny looked really worried.
“Relax,” Justin said, taking his backpack off and unzipping the top. “Remember how you borrowed my notebook in homeroom to write the combination down? Well, I know how we can recover what you wrote.”
He took the notebook and a soft lead pencil out of his bag. The page that Kenny had written on had left faint marks on another page in the notebook. Justin held the pencil on its side and rubbed it lightly over the marks. Slowly but surely the numbers of the locker combination appeared in white, set off by the gray pencil rubbings.
“That's amazing!” Kenny said. “I owe you one.” And he dashed off to open his locker.
It was just another day in the life of the boy whose motto was “Never throw anything out, you never know when it might come in handy.”
1.Why is Justin's room such a mess?
A. He always forgets to clean it.             B. He shares the room with his brother.
C. He has no time to clean it.               D. He never throws anything away.
2.In what way is Justin’s backpack a smaller version of his bedroom?
A. He uses it as a place to store objects.
B. He uses it to carry his books and sports equipment.
C. His parents tell him to clean it all the time.
D. He's had it for as long as he can remember.
3. The underlined phrase "pleaded with" means
A. ignored               B. asked           C. pushed              D. Ordered
4.How does Kenny feel toward Justin?
A. Annoyed.     B. Disinterested.             C. Grateful.         D. Angry.

高二英语阅读理解简单题查看答案及解析

Justin’s bedroom was so full of flat bicycle tires, bent tennis rackets, deflated（瘪掉的）basketballs, and games with missing pieces that you could barely get in the door. His parents pleaded with him to clean out his room.

“What use is a fish tank with a hole in the bottom?” his father asked. But Justin simply smiled and repeated his motto, “Never throw anything out, you never know when it might come in handy.”

When Justin was away from home, he always carried his blue backpack--a smaller version of his bedroom--a place to store the many objects that he collected. It was so worn and stretched that it hardly resembled a backpack anymore.

Justin had earned a reputation for figuring things out and getting people out of otherwise hopeless situations. Many of his classmates and neighbors sought him out when they needed help with a problem. On the first day of school, his friend Kenny, came looking for Justin.

“Do you think you have something in your bag that could help me remember my locker combination?” he asked. “I lost the piece of paper it was written on. I have a science class in two minutes and if I’m late on the first day it’ll make me look bad for the rest of the year.” Kenny looked really worried.

“Relax,” Justin said, taking his backpack off and unzipping the top. “Remember how you borrowed my notebook in homeroom to write the combination down? Well, I know how we can recover what you wrote.”

He took the notebook and a soft lead pencil out of his bag. The page that Kenny had written on had left faint marks on another page in the notebook. Justin held the pencil on its side and rubbed it lightly over the marks. Slowly but surely the numbers of the locker combination appeared in white, set off by the gray pencil rubbings.

“That’s amazing!” Kenny said. “I owe you one.” And he dashed off to open his locker.

It was just another day in the life of the boy whose motto was “Never throw anything out, you never know when it might come in handy.”

1.Why is Justin’s room such a mess? WWW.K**S*858$$U.COM

A．He always forgets to clean it.	B．He shares the room with his brother.
C．He has no time to clean it.	D．He never throws anything away.

2.In what way is Justin’s backpack a smaller version of his bedroom?

A．He uses it as a place to store objects.

B．He uses it to carry his books and sports equipment.

C．His parents tell him to clean it all the time.

D．He’s had it for as long as he can remember.

3.The underlined phrase "pleaded with" means

A．ignored

B．asked

C．pushed

D．Ordered

4.How does Kenny feel toward Justin?

A．Annoyed.

B．Disinterested.

C．Grateful.

D．Angry.

高二英语阅读理解简单题查看答案及解析

Justin’s bedroom was so full of flat bicycle tires, bent tennis rackets, deflated（瘪掉的）basketballs, and games with missing pieces that you could barely get in the door．His parents pleaded with him to clean out his room．
“What use is a fish tank with a hole in the bottom?” his father asked．But Justin simply smiled and repeated his motto, “Never throw anything out, you never know when it might come in handy．”
When Justin was away from home, he always carried his blue backpack--a smaller version of his bedroom--a place to store the many objects that he collected．It was so worn and stretched that it hardly resembled a backpack anymore．
Justin had earned a reputation for figuring things out and getting people out of otherwise hopeless situations．Many of his classmates and neighbors sought him out when they needed help with a problem．On the first day of school, his friend Kenny, came looking for Justin．
“Do you think you have something in your bag that could help me remember my locker combination?” he asked．“I lost the piece of paper it was written on．I have a science class in two minutes and if I'm late on the first day it’ll make me look bad for the rest of the year．” Kenny looked really worried．
“Relax,” Justin said, taking his backpack off and unzipping the top．“Remember how you borrowed my notebook in homeroom to write the combination down? Well, I know how we can recover what you wrote．”
He took the notebook and a soft lead pencil out of his bag．The page that Kenny had written on had left faint marks on another page in the notebook．Justin held the pencil on its side and rubbed it lightly over the marks．Slowly but surely the numbers of the locker combination appeared in white, set off by the gray pencil rubbings．
“That's amazing!” Kenny said．“I owe you one．” And he dashed off to open his locker．
It was just another day in the life of the boy whose motto was “Never throw anything out, you never know when it might come in handy．”
1.Why is Justin's room such a mess?
A．He always forgets to clean it．
B．He shares the room with his brother．
C．He has no time to clean it．
D．He never throws anything away．
2.In what way is Justin’s backpack a smaller version of his bedroom?
A．He uses it as a place to store objects．
B．He uses it to carry his books and sports equipment．
C．His parents tell him to clean it all the time．
D．He's had it for as long as he can remember．
3.The underlined phrase "pleaded with" means
A．ignored B．asked C．pushed D．Ordered
4.How does Kenny feel toward Justin?
A．Annoyed． B．Disinterested． C．Grateful． D．Angry．

高二英语阅读理解中等难度题查看答案及解析
On a cold evening with snow floating in the air, I got 1.(stick) on the road because of a flat tire(轮胎). I attempted 2.(seek) help from the passing cars, but no one stopped. As I was about to give up hope, a man 3.(drive) an old dirty car came to my aid. To be honest, I was scared when he first approached me. Eying him up and down, I thought to myself, “There is a very good chance 4. he may rob me,” He seemed to have sensed my discomfort so he tried to ease my 5.(anxious) by introducing himself. His act of kindness made me feel ashamed to have questioned his intentions. 6.was really considerate of him to stop to help a perfect stranger like me, especially in such terrible weather. Thus, after the spare tire was fitted, I asked 7. much I owed him. I wanted to pay him back. 8.(surprising), he did not take my offer but rather told me to pass the act of kindness forward and help more people 9. need. As he said those words, I noticed him wearing a smile of contentment. Helping　 others seemed a very 10.（nature）thing to him. I witnessed the true beauty of human nature in him.

高二英语短文填空中等难度题查看答案及解析
Walt Disney invented a special word to replace persistence and determination, and he named it as sticktoitivity. The ______ of people are so afraid of failure that they don’t know the Japanese have a fascinating way of looking at ______ . Their saying “Fall seven times; stand up eight” is a(n)______ explanation to sticktoitivity!
A good friend of mine has a business on which he has ______ diligently for over five years. He knows that his business has the potential (潜能) to increase sales ten times.　 ______ , to do so, he has to probably break the mold (打破常规) that ______ him unchanged, and create a different blueprint. He ______ gives up his dream, and he is a(n)　 ______ of sticktoitivity!
The basketball star Michael Jordan ______ sticktoitivity in one of his shoe advertisements, “‘I’ve missed more than nine thousand shots in my ______. I've lost almost three hundred games. I’ve been trusted to get a shot for twenty-six times but I　 ______ . I’ve failed over and over and over again in my life, and that is ______ I succeed.”
We also know some examples of ______ people who demonstrated (证明) that they understood “sticktoitivity.” For example, Steven Spielberg ______ high school in the first year. He was persuaded to come back and was ______ in a learning disabled class. He lasted a month and dropped out of school forever. Who could ______ that he would become a most famous director in the US at that time?
Have you ever defined “success” or “failure” on your own terms? I ______ recommend doing so. It certainly creates a sense of understanding in your life. Sometimes ______is learning how to fail. Sometimes success is ______ the obstacles leading to failure. Remember, the only failure is learning ______ from the experience. So it’s important for you to stand up on the eighth time!
1.A. number　　 B. majority　　 C. population　　 D. group
2.A. situation　　 B. energy　　 C. ability　　 D. failure
3.A. wonderful　　 B. different　　 C. difficult　　 D. exciting
4.A. studied　　 B. researched　　 C. worked　　 D. acted
5.A. Therefore　　 B. However　　 C. Anyway　　 D. Otherwise
6.A. helped　　 B. noticed　　 C. made　　 D. raised
7.A. never　　 B. seldom　　 C. often　　 D. sometimes
8.A. memorial　　 B. example　　 C. celebrity　　 D. purpose
9.A. reflected　　 B. mentioned　　 C. used　　 D. stated
10.A. life　　 B. chance　　 C. career　　 D. event
11.A. win　　 B. miss　　 C. play　　 D. fall
12.A. why　　 B. when　　 C. where　　 D. because
13.A. strange　　 B. lucky　　 C. clever　　 D. famous
14.A. gave up　　 B. got to　　 C. dropped out of　　 D. kept away from
15.A. sent　　 B. placed　　 C. brought　　 D. moved
16.A. tell　　 B. look　　 C. read　　 D. notice
17.A. hardly　　 B. partly　　 C. highly　　 D. perfectly
18.A. opportunity　　 B. luck　　 C. truth　　 D. success
19.A. realizing　　 B. overcoming　　 C. causing　　 D. understanding
20.A. anything　　 B. something　　 C. nothing　　 D. everything

高二英语完形填空简单题查看答案及解析
Mobile communications and the IP phone business have gradually replaced traditional long-distance calls. Mobile communications account for 28.5 percent of the total long-distance communications business. IP phones have 41.4 percent, while traditional long-distance calls are down to 30.1 percent.
China Mobile, the country's largest mobile communication operator, has accounted for nearly 40 percent of taxes in the domestic telecom market. That puts it at the top of the six major telecom operators in the nation, according to the latest official statistics. The other five are: China Telecom, 31.1 percent; China Netcom, 16.6 percent; China Unicom, 13.4 percent; China Satellite Communications Corp and China Railcom, 1.5 percent.
China Mobile is being chased by smaller rivals China Unicom and China Telecom, both of which are making significant 3G subscriber gains. That’s aided in no small part by deals to offer the iPhone. However, as of March, China Mobile did have 15 million iPhone users on its network.
In another ranking, Xiaomi, Huawei, Lenovo, vivo and OPPO came in as the top five mobile phone sellers in China by April, 2015, according to IHS Technology. The report also says that during this period, China produced 82 million handsets. (手机) (including GSM, GPRS and CDMA phones) and sold 80 million. Of the phones sold, 37 million were exported to other countries. Analysts point out that China's lack of core technologies and its heavy reliance on overseas technologies have proved to be an obstacle for development of domestic phone makers.
1.Nowadays, mobile communications have gradually taken the place of________ .
A. IP phone service
B. telecom operators
C. traditional telephones
D. traditional long-distance calls
2.The underlined word "obstacle" means________ .
A. advantage　　 B. puzzle　　　 C. difficulty　　 D. factor
3.We can infer from the text that __　　　 .
A. most phones are sold in foreign countries
B. most long-distance calls are made through mobile phone today
C. China had the most mobile phone users
D. China Telecom brings in more taxes of all the companies

高二英语阅读理解中等难度题查看答案及解析
◆ Share Flats: Happy Valley big flat, 1 room ready for use immediately. Quiet and convenient, fully furnished, park view. $6,800 including bills with maid. Female nonsmoker. No pet. Sara 25720836 or 10077809.
◆ Moving Sale: 2 armchairs, red/brown at $400 each; coffee table, black, wood, $800; oil painting, big, $900; Tianjin carpet, green 3×7, $600; double bed, $500; mirror, big, square, $500; fridge, big, double-door, $1000; old pictures, $140 up, each; plants, big and small. Tel: Weekend, 25216011/Weekday, 25245867.
◆ Part-time Laboratory Assistant Wanted: Required by busy electronics (电子) company to help with development of computer. Should have an electronics degree and some practical experience of working in an electronics laboratory. Hours 9:30a.m.-1:0p.m. Mon.-Fri. Fourteen days paid leave. Salary ￥6598-10230 dependent on experience. Letter of application to: Mrs. G Chan, NOVA ELECTRONICS, 45 Gordon Rd, Hung Hom Kowloon.
1.The one who put on the first ad probably wants to _________.
A．rent a beautiful flat of her own in Happy Valley
B．find another lady to share the cost to rent a flat
C．share her room in a flat with whoever has no pet
D．take on a maid to look after herself and the flat
2.According to the ads, you may _______.
A．buy an old picture for $150
B．call at 25245867 and see a beautiful park
C．buy two armchairs for $ 400
D．hire a maid by paying $6,800
3.Once you can get a part-time job in NOVA ELECTRONICS, _______.
A．you have to work at least 4 hours a day
B．you should write a letter to Mrs. G Chan
C．you will get no more than $6 598 each month
D．you will be given 14 days off each year besides weekends

高二英语阅读理解中等难度题查看答案及解析
Advertisement
★Share Flat. Happy Valley big flat, one room ready for use immediately, quiet and convenient, fully furnished, park view. $6,800 including bills with maid.
Female nonsmoker. No pet. Sara 25720836 or 10077809.
★Moving Sale: 2 armchairs, red/ brown at $400 each; coffee table, black, wood,$800; oil painting, big, $900; Tianjin carpet, green, 3×7, $600; double bed, $500; mirror, big square, $500; fridge, big, double-door, $1,000; old pictures, $140 up, each. Tel: Weekend, 2521-6011; Weekday, 2524-5867.
★Part-time Laboratory Assistant Wanted. Required by busy electronics company to help with development of computer. Should have an electronics degree and some practical experience of working in an electronics laboratory. Hours 9:30am-1:00pm, Mon.-Fri. Fourteen days paid leave. Salary 6,598-10,230 dependent on experience. Letter of application to: Mrs G Chan, NOVA ELECTRONICS, 45 Gordon RD, Hung Hom Knowloon.
1.The one who puts on the first advertisement probably wants to ______.
A. rent a beautiful flat of her own in Happy Valley
B. find another lady to share the cost to rent a flat
C. share her room in a flat with whoever has no pet
D. find a maid to look after herself
2.According to the advertisements, you may _______.
A. buy an old picture for $150
B. call 25720836 to see a beautiful park
C. buy two armchairs for $400
D. hire a maid（女仆）by paying $6,800
3.If you want to buy some old furniture, you should ______.
A. get in touch with NOVA ELECTRONICS
B. call 2524-5867 any day except Monday
C. do it before you move to another place
D. call either 2524-5867 on Monday or 2521-6011 on Saturday
4.Once you get a part-time job in NOVA ELECTRONICS, _______.
A. you will be given 14 days off each year besides weekends
B. you will get $6,598 each month no matter how experienced you are
C. your have to work at least 4 hours a day
D. you should write a letter of application to Mrs. G Chan

高二英语阅读理解中等难度题查看答案及解析