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?
Can you understand the beginning of this essay(短文)?
“My smmr hols wr CWOT．B4, we usd 2go2 NY 2C my bro, his GF & 3 kds FTF．”
The Scottish teacher who received it in class had no idea what the girl who wrote it meant．The essay was written in a form of English used in cellphone text messages(短信)．Text messages(also called SMS)through cellphones became very popular in the late 1990s．At first, mobile phone companies thought that text messaging would be a good way to send messages to customers, but customers quickly began to use the text messaging service to send messages to each other．Teenagers in particular enjoyed using text messaging, and they began to create a new language for messages called“texting．”
A text message is limited to 160 characters, including letters, spaces, and numbers, so messages must be kept short．In addition, typing on the small keypad of a cellphone is difficult, so it's common to make words shorter．In texting, a single letter or number can represent(代表)a word, like“r”for“are,”“u”for“you,”and“2”for“to．”Several letters can also represent a phrase, like“lol”for“laughing out loud．”Another characteristic(特征)of texting is the leaving out of letters in a word, like spelling“please”as“pls．”
Some parents and teachers worry that texting will make children bad spellers and bad writers．The student who wrote the essay at the top of this page said writing that way was more comfortable for her．(The essay said,“My summer holidays were a complete waste of time．Before, we used to go to New York to see my brother, his girlfriend, and their three kids face to face．”)
Not everyone agrees that texting is a bad thing．Some experts say languages always develop, and this is just another way in which English is changing．Other people believe texting will disappear soon．New technology for voice messages may soon make text messages a thing of the past．
(1)
What is the writer's opinion of text messaging?
[ ]
A．
The writer does not give his opinions．
B．
It is not bad for children．
C．
It will make children bad writers．
D．
It is fun and easy to do．
(2)
Which characteristic of texting is NOT described in the passage?
[ ]
A．
Using letters to represent words．
B．
Using letters to represent phrases．
C．
Using phrases to represent essays．
D．
Using numbers to represent words．
(3)
Why do some people think that texting is bad?
[ ]
A．
It costs too much．
B．
Teenagers won't learn to write correctly．
C．
It's too difficult to type．
D．
It's not comfortable．
(4)
Why aren't some people worried about the effect of texting?
[ ]
A．
Not many people use texting．
B．
Spelling in English is too difficult．
C．
Texting will disappear because of new technology．
D．
Teenagers quickly become bored with texting．
阅读理解
Can you understand the beginning of this essay?
“My smmr hols wr CWOT．B4, we usd 2 go 2 NY 2C my bro, hisGf & 3 kds FTF．”
The Scottish teacher who received it in class had no idea what the girl who wrote it meant．The essay was written in a form of English used in cell phone text messages．Text messages(also called SMS)through cell phones became very popular in the late 1990s．At first, mobile phone companies thought that text measuring would be a good way to messages to customers, but customers quickly began to use the text messaging service to send messages to each other．Teenagers in particular enjoyed using text messaging, and they began to create a new language for messages called“texting．”
A text message is limited to 160 characters, including letters, spaces, and numbers, so messages must be kept short．In addition, typing on the small keypad of a cell phone is difficult, so it’s common to make words shorter．In texting, a single letter or number can represent a word, like“r”for“are”,“u”for“you”, and“2”for“to”．Several letters can also represent a phrase, like“lol”for“laughing out loud”．Another characteristic of texting is the leaving out of letters in a word, like spelling“please”as“pls”．
Some parents and teachers worry that texting will make children bad spellers and bad writers．The students who wrote the essay at the top of this page said writing that way was more comfortable for her．(The essay said,“My summer holidays were a complete waste of time．Before, we used to go to New York to see my brother, his girlfriend, and their three kids face to face．”)
Not everyone agrees that texting is a bad thing．Some experts say languages always develop, and this is just another way in which English is changing．Other people believe texting will disappear soon．New technology for voice messages may soon make text messages a thing of the past．
(1)
What is the writer’s opinion of text messaging?
[ ]
A．
The writer does not give his opinions．
B．
It is not bad for children．
C．
It will make children bad writers．
D．
It is fun and easy to do．
(2)
Which characteristic of texting is NOT described in the passage?
[ ]
A．
Using letters to represent words
B．
Using phrases to represent essays．
C．
Using letters to represent phrases
D．
Using numbers to represent words．
(3)
Which of the following was most probably the title of the student’s essay?
[ ]
A．
My Smmr Hols
B．
CU in LA
C．
My GF
D．
M Gr8 Tchr
(4)
Why aren’t some people worried about the effect of texting?
[ ]
A．
Not many people use texting
B．
Spelling in English is too difficult
C．
Teenagers quickly become bored with texting
D．
Texting will disappear because of new technology．
阅读理解
阅读下列短文，从每题所给的四个选项(A、B、C和D)中，选出最佳选项，
Can you understand the beginning of this article?
“My smmr hols wr CWOT．B4, we usd 2go2 NY 2C my bro, his GF & 3 kds FTF．”
The Scottish teacher who received it in class had no idea what the girl who wrote it meant．The essay was written in a form of English used in cell phone text messages．Text messages(also called SMS2)through cell phones became very popular in the late 1990s．At first, mobile phone companies thought that text messaging would be a good way to send messages to customers, but customers quickly began to use the text messaging service to send messages to each other．Teenagers in particular enjoyed using text messaging, and they began to create a new language for messages called texting．
A text message is limited to 160 characters, including letters, spaces, and numbers, so messages must be kept short．In addition, typing on the small keypad of a cell phone is difficult, so it's common to make words shorter．In texting, a single letter or number can represent a word, like “r” for “are,” “u” for “you,” and “2” for “to．” Several letters can also represent a phrase, like “lol” for “laughing out loud．” Another characteristic of texting is the leaving out of letters in a word, like spelling “please” as “pls．”
Some parents and teachers worry that texting will make children bad spellers and bad writers．The student who wrote the essay at the top of this page said writing that way was more comfortable for her．(The essay said, “My summer holidays were a complete waste of time．Before, we used to go to New York to see my brother, his girlfriend, and their three kids face to face．”)
Not everyone agrees that texting is a bad thing．Some experts say languages always evolve, and this is just another way for English to change．Other people believe texting will disappear soon．New technology for voice messages may soon make text messages a thing of the past．
(1)
What is the writer's opinion of text messaging?
[ ]
A．
It is fun and easy to do．
B．
It is not bad for children．
C．
It will make children bad writers．
D．
The writer does not give an opinion．
(2)
Which way of texting is NOT described in the passage?
[ ]
A．
Using phrases to represent essays
B．
Using numbers to represent words
C．
Using letters to represent phrases
D．
Using letters to represent words
(3)
Which of the following was most probably the title of the student's essay?
[ ]
A．
My Gr8 Tchr
B．
CU in LA
C．
My GF
D．
My Smmr Hols
(4)
Why do some people think that texting is bad?
[ ]
A．
It has been replaced by voice message
B．
It's too difficult to type．
C．
Teenagers won't learn to write correctly．
D．
It's not comfortable．
(5)
Why aren't some people worried about the effect of texting?
轻巧夺冠周测月考直通名校系列答案