From talking robots and video phones, technology has become so advanced that the previously impossible seems to occur on a daily basis. And yet—we still have no cure for the common cold.
Why can’t we stop the common cold? According to Peter Barlow, a scientist at Edinburgh Napier University, the main challenge lies in the many different types of cold viruses that are produced by the rhinoviruses (鼻病毒). There are at least 160 types. They change so easily that they quickly become resistant to drugs. In other words, a single cure isn’t likely to work on every type of cold.
However, researchers from Stanford University have found a possible answer. They discovered a protein that the viruses need. Without it, they can't spread inside your body.
To identify the gene which produces the specific protein needed by the viruses, researchers used a gene-editing technique to test all genes one by one for thousands of cells. These modified (改变的) cells were then exposed to a range of rhinoviruses which cause the common cold.
All the viruses were unable to copy inside cells without a gene that produces a specific protein, called methyltransferase (甲基转移酶) SETD3.
Then, they tested genetically modified mice, which were completely unable to produce the protein. The mice were able to live healthy, normal lives without the protein.
“Lacking that gene protected the mice completely from the common cold,” associate professor Jan Carette, from Stanford, told the BBC.
“These mice would always die, but they survived and we saw a very strong protection.”
Carette said the plan is to find a drug which can keep back the protein for a limited time, rather than produce genetically modified humans.
“We have identified a fantastic target that all rhinoviruses require and depend on. Take that away and the virus really has no chance,” said Carette.
1.Why does the author mention talking robots and video phones in the first paragraph?
A.To stress the importance of technology.
B.To encourage readers to share their ideas.
C.To introduce the topic of the text.
D.To recognize the progress of science.
2.What can we learn about the protein needed by the viruses?
A.It helps the viruses copy inside our bodies.
B.It stops the viruses from changing easily.
C.It protects the viruses against drugs.
D.It forces the viruses to spread fast.
3.What does Jan Carette intend to do?
A.To identify a fantastic target.
B.To slow copying speed of some genes.
C.To produce genetically modified humans.
D.To find a drug to temporarily block the protein.
4.What is the best title for the text?
A.A New Experiment on Viruses.
B.New Defense Found for Viruses.
C.A Chemical Curing Modified Viruses.
D.Gene-editing Technology to Control Viruses.
高三英语阅读理解困难题
From talking robots and video phones, technology has become so advanced that the previously impossible seems to occur on a daily basis. And yet—we still have no cure for the common cold.
Why can’t we stop the common cold? According to Peter Barlow, a scientist at Edinburgh Napier University, the main challenge lies in the many different types of cold viruses that are produced by the rhinoviruses (鼻病毒). There are at least 160 types. They change so easily that they quickly become resistant to drugs. In other words, a single cure isn’t likely to work on every type of cold.
However, researchers from Stanford University have found a possible answer. They discovered a protein that the viruses need. Without it, they can't spread inside your body.
To identify the gene which produces the specific protein needed by the viruses, researchers used a gene-editing technique to test all genes one by one for thousands of cells. These modified (改变的) cells were then exposed to a range of rhinoviruses which cause the common cold.
All the viruses were unable to copy inside cells without a gene that produces a specific protein, called methyltransferase (甲基转移酶) SETD3.
Then, they tested genetically modified mice, which were completely unable to produce the protein. The mice were able to live healthy, normal lives without the protein.
“Lacking that gene protected the mice completely from the common cold,” associate professor Jan Carette, from Stanford, told the BBC.
“These mice would always die, but they survived and we saw a very strong protection.”
Carette said the plan is to find a drug which can keep back the protein for a limited time, rather than produce genetically modified humans.
“We have identified a fantastic target that all rhinoviruses require and depend on. Take that away and the virus really has no chance,” said Carette.
1.Why does the author mention talking robots and video phones in the first paragraph?
A.To stress the importance of technology.
B.To encourage readers to share their ideas.
C.To introduce the topic of the text.
D.To recognize the progress of science.
2.What can we learn about the protein needed by the viruses?
A.It helps the viruses copy inside our bodies.
B.It stops the viruses from changing easily.
C.It protects the viruses against drugs.
D.It forces the viruses to spread fast.
3.What does Jan Carette intend to do?
A.To identify a fantastic target.
B.To slow copying speed of some genes.
C.To produce genetically modified humans.
D.To find a drug to temporarily block the protein.
4.What is the best title for the text?
A.A New Experiment on Viruses.
B.New Defense Found for Viruses.
C.A Chemical Curing Modified Viruses.
D.Gene-editing Technology to Control Viruses.
高三英语阅读理解困难题查看答案及解析
From talking robots and video phones to rovers （探测器）on Mars, technology has become so advanced that the previously impossible seems to occur on a daily basis. And yet—we still have no cure for the common cold.
Why can't we stop the common cold? According to Peter Barlow, a scientist at Edinburgh Napier University in the UK, the main challenge lies in the many different types of cold viruses that are produced by the rhinoviruses （鼻病毒），Scientific American reported. There are at least 160 types. They mutate so easily that they quickly become resistant to drugs, or learn to hide from our immune systems. In other words, a single cure isn't likely to work on every type of cold.
However, researchers from Stanford University and the University of California, San Francisco, have found a possible answer. They discovered a protein that the viruses need. Without it, they can't spread inside your body.
To identify the gene which produces the specific protein needed by the viruses, researchers used a gene-editing technique to test all genes in the human genome（基因组）one by one for thousands of cell.
These modified （改变的）cells were then exposed to a range of enteroviruses （肠道病毒）， including the rhinoviruses which cause the common cold.
All the viruses were unable to replicate（复制）inside cells without a gene that produces a specific protein, called methyltransferase（甲基转移酶）SETD3.
Then, they tested genetically（从基因方面）modified mice, which were completely unable to produce the protein. The mice were able to live healthy, normal lives without the protein.
"Lacking that gene protected the mice completely from viral （病毒的）infection,” associate professor Jan Carette, from Stanford, told the BBC.
"These mice would always die, but they survived and we saw a very strong reduction in viral replication and very strong protection."
Carette said the plan is to find a drug which can temporarily suppress（抑制） the protein, instead of producing genetically modified humans.
“We have identified a fantastic target that all enteroviruses and rhinoviruses require and depend on. Take that away and the virus really has no chance," said Carette.
"This is a really good first step—the second step is to have a chemical that mimics（模拟） this genetic deletion,” he added.
1.What does the underlined word "mutate” mean in English?
A.To change a new form.
B.To identify a new gene.
C.To check a modified cell.
D.To cure a viral infection.
2.What is the article mainly about?
A.Why it is so hard to cure the common cold.
B.The possible link between rhinoviruses and the common cold.
C.A possible way to stop viral infections that cause the common cold.
D.The functions of a protein needed by viruses.
3.What does Peter Barlow think is the main problem for prevention of the common cold?
A.The slow mutation of some genes.
B.The fast speed at which rhinoviruses spread.
C.The harm rhinoviruses do to the immune system.
D.The wide variety of cold viruses created by rhinoviruses.
4.What can we learn about the protein needed by the viruses?
A.It helps the viruses replicate inside our bodies.
B.It allows the viruses to change easily.
C.It helps the viruses become resistant to drugs.
D.It increases the spread of the viruses.
5.What did the researchers discover in their gene-editing study?
A.Genetically modified mice died because they lacked the protein.
B.The modified cells seemed to protect the mice against viral infections.
C.More methyltransferase SETD3 was produced after the cells were modified.
D.The gene-editing technique was more effective against enteroviruses than rhinoviruses.
6.What do the researchers plan to do next, according to Carette?
A.Conduct experiments on genetically modified humans.
B.Identify a drug that can help reduce the protein.
C.Apply this gene-editing technique to control other viruses.
D.Find a chemical that can cure all enteroviruses and rhinoviruses.
高三英语阅读理解困难题查看答案及解析
From talking robots and video phones to rovers on Mars, technology has become so advanced that the previously impossible seems to occur on a daily basis. And yet - we still have no cure for the common cold.
Why can’t we stop the common cold? According to Peter Barlow, a scientist at Edinburgh Napier University in the UK, the main challenge lies in the many different types of cold viruses that are produced by the rhinoviruses (鼻病毒). There are at least 160 types. They mutate (突变) so easily that they quickly become resistant to drugs, or learn to hide from our immune systems. In other words, a single cure isn’t likely to work on every type of cold.
However, researchers from Stanford University and the University of California, San Francisco, have found a possible answer. They discovered a protein that the viruses need. Without it, they can’t spread inside your body.
To identify the gene which produces the specific protein needed by the viruses, researchers used a gene-editing technique to test all genes in the human genome one by one for thousands of cells. These modified (改变的) cells were then exposed to a range of enteroviruses, including the rhinoviruses which cause the common cold. All the viruses were unable to replicate (复制) inside cells without a gene that produces a specific protein, called methyltransferase SETD3.
Then, they tested genetically modified mice, which were completely unable to produce the protein. The mice were able to live healthy, normal lives without the protein. “Lacking that gene protected the mice completely from viral infection.” associate professor Jan Carette, from Stanford, told the BBC. “These mice would always die, but they survived and we saw a very strong reduction in viral replication and very strong protection.”
Carette said the plan is to find a drug which can temporarily suppress (抑制) the protein, instead of producing genetically modified humans. “We have identified a fantastic target that all enteroviruses and rhinoviruses require and depend on. Take that away and the virus really has no chance.” said Carette. “This is a really good first step – the second step is to have a chemical that mimics (模拟) this genetic deletion.” he added.
1.What does Peter Barlow think is the main problem for prevention of the common cold?
A.The slow mutation of some genes.
B.The fast speed at which rhinoviruses spread.
C.The harm rhinoviruses do to the immune system.
D.The wide variety of cold viruses created by rhinoviruses.
2.What can we learn about the protein needed by the viruses?
A.It helps the viruses replicate inside our bodies.
B.It allows the viruses to mutate easily.
C.It helps the viruses become resistant to drugs.
D.It accelerates the speed at which the viruses spread.
3.What did the researchers discover in their gene-editing study?
A.Genetically modified mice died because they lacked the protein.
B.The modified cells seemed to protect the mice against viral infections.
C.More methyltransferase SETD3 was produced after the cells were modified.
D.The gene-editing technique was more effective against enteroviruses than rhinoviruses.
4.What do the researchers most probably do next, according to Carette?
A.Conduct experiments on genetically modified humans.
B.Identify a drug that can help reduce the protein.
C.Apply this gene-editing technique to control other viruses.
D.Find a chemical that can cure all enteroviruses and rhinoviruses.
高三英语阅读理解中等难度题查看答案及解析
From talking robots to driverless vehicles, technology has become so advanced that the previously impossible seems to occur on a daily basis. And yet-we still have no cure for the common cold.
Why can't we stop the common cold? According to Peter Barlow, a scientist at Edinburgh Napier University, the main challenge lies in the many different types of cold viruses that belong to the rhinoviruses(鼻病毒). There are at least 160 types.They mutate(突变) so easily that they quickly become resistant to drugs, or learn to hide from our immune systems. In other words, a single cure isn't likely to work on every type of cold.
However, researchers from Stanford University and the University of California, San Francisco, have found a possible answer. They discovered a protein(蛋白质) that the viruses need. All the viruses were unable to replicate(复制) inside cells without a gene that produces a specific protein called SETD3.
To identify the gene which produces the specific protein, researchers used a gene-editing technique to test all genes in the human genome (基因组). Namely, they randomly disabled a single gene in each of the cells, so that the cells lacked one or another of every gene in our genome. These genetically modified cells were then exposed to the rhinoviruses, which cause the common cold. The team then looked at which gene was missing in cells that continued to grow. As it turned out, the one that stood out was SETD3, which makes a protein of the same name.
Carette said the plan is to find a drug which can temporarily disable the protein, instead of producing genetically modified humans. “We have identified a fantastic target that all rhinoviruses require and depend on. Take that away and the virus really has no chance,” said Carette.
1.Which does Peter Barlow think is a problem for fighting the common cold?
A.The poor immunity of patients. B.The large variety of viruses.
C.The lack of enough cures. D.The side effects of drugs.
2.What do we know about the gene-editing study in Paragraph 4?
A.All genetically modified cells survived B.Some genes in our genome were ignored
C.It located the gene responsible for SETD3 D.It exposed the harm of the rhinoviruses.
3.How should we stay away from the common cold according to Carette?
A.Apply gene-editing to human genes B.Avoid contacts with colds patients
C.Prevent cold viruses from mutating D.Develop a drug to switch off SETD3
4.Which of the following is the best title for the text?
A.Potential defense found for cold viruses B.Secrets behind the human genes
C.Real causes of the common cold D.Puzzles over rhinoviruses solved
高三英语阅读理解中等难度题查看答案及解析
Technology keeps students from focusing, right? One solution is ban phones and computers from the classroom. Another solution is to engage students with online tools that will help them complete assignments while still using electronic equipment. Here are some online tools to hold their attention.
Prezi
Presentations are an important part of the curriculum but let’s face it. PowerPoint isn’t terribly engaging. Prezi allows students to create presentations that are more creative and exciting than what PPT has to offer. Not only will this make the presentation-creating process more interesting for students, it will also make watching presentations more interesting as well.
Trello
Because so many students are in the habit of multitasking, a good skill to teach them is how to organize and simplify their assignments. Trello is a free and super easy-to-use tool for students to create workflow charts. Multiple students can be added to the same board; great for teamwork on projects.
Cold Turkey
Cold Turkey is a useful tool to reduce the number of tasks that students can do at the same time on their computers. They probably won’t love this one because it limits their access to certain websites so that students can focus on their tasks. Even having students turn it on for half of a period for some focuses on in-class writing time will make a difference in terms of their productivity.
White Noise
Whatever you want the students to engage in — activities, contents, assignments, etc. — they need to be able to focus, and classrooms aren’t always the easiest places to do that. White noise can not only drown out excess(过量) noise, but also help students keep more concentrated, for there is less noise when they’re concentrating.
1.What are these technology tools mainly used for?
A. Helping students stay focused on their lessons.
B. Banning electronic equipment from the classroom.
C. Improving the students’ creativity in class.
D. Discouraging too much use of online tools.
2.Which tool is suitable for teamwork?
A. White Nose. B. Cold Turkey. C. Trello. D. Prezi.
3.Why might students dislike Cold Turkey?
A. Because it is not practical for them at all.
B. Because it makes some websites inaccessible.
C. Because it greatly reduces their productivity.
D. Because it prevents them surfing the Internet.
高三英语阅读理解中等难度题查看答案及解析
I am a time traveller.At the moment, I am talking to you from the Dark Ages, where ___ and technology has been forgotten.
Well...not ___ .But I do feel so !
About two and a half months ago, my computer ____ and I have been living without one at home. The man in the repair shop said it would be more expensive to ____ my computer than to buy a new one!
Now, I can admit that I am ___ to the Internet. I spend hours of my _____ time online. When I was told my computer couldn’t be fixed, I was _____ ! I don’t have enough money to _____ a new one at the moment and I will have to wait _____ December.
I have been trying to________thing to do without a computer, but it is a lot more ______than I was expecting! I got my first ____ when I was six old and I have ______ technology ever since.
This experience has made me ______ just how useful computers really are. I use the Internet for schoolwork,shopping, and all my banking is done ______. Without the Internet, it feels like you’re ______ out on something. However, it’s not all _______.I am sleeping a lot better now and I have been baking a lot , which I love _____never used to find enough ______ to do.
Living without a computer may not be as I thought it was going to be, but I am ready to_______ the Dark Ages and return to the 21st century!
1.A. science B. reputation C. communication D. information
2.A. curiously B. exactly C. violently D. angrily
3.A. exploded B. lost C. broke D. sank
4.A. arrange B. solve C. combine D. fix
5.A. accustomed B. contributed C. addicted D. devoted
6.A. simple B. free C. limited D. flexible
7.A. sad B. amazed C. puzzled D. nervous
8.A. rent B. buy C. use D. build
9.A. since B. after C. until D. in
10.A. learn from B. hear from C. speak of D. think of
11.A. complex B. interesting C. difficult D. surprising
12.A. present B. computer C. sweater D. watch
13.A. loved B. invented C. discovered D. changed
14.A. realize B. possess C. believe D. remember
15.A. outside B. online C. behind D. upstairs
16.A. missing B. taking C. putting D. holding
17.A. dusty B. careless C. popular D. bad
18.A. so B. or C. and D. but
19.A. belief B. courage C. energy D. time
20.A. create B. forget C. leave D. prevent
高三英语完形填空中等难度题查看答案及解析
The mascot (吉祥物) Haibao, full of meanings from foot to head, has become the lucky symbol and cultural _________ of Shanghai Expo.
A. remark B. mark C. scene D. view
高三英语单项填空简单题查看答案及解析
Computer technology has become a major part of people’s lives. This technology has its own special words. One example is the word mouse. A computer mouse is not a small animal that lives in buildings and open fields. It is a small device that you move around on a flat surface in front of a computer. The mouse moves the pointer on the computer screen.
Computer expert Douglas Engelbart developed the idea for the mouse in the early 1960s. The first computer mouse was a carved block of wood with two metal wheels. It was called a mouse because it had a tail at one end. The tail was the wire that connected it to the computer.
Using a computer takes some training. People who are experts are sometimes called hakers. A hacker is usually a person who writes software programs in a special computer language. But the word hacker is also used to describe a person who tries to steal information from computer systems.
Another well-known computer word is Google. It is the name of a popular “search engine” for the Internet. People use the search engine to find information about almost any subject on the Internet. The people who started the company named it Google because in maths, google is an extremely large number. It is the number one followed by 100 zeros.
When you “Google” a subject, you can get a large amount of information about it . Some people like to google their friends or themselves to see how many times their names appears on the Internet.
If you Google someone, you might find that person’s name on a blog. A blog is the shortened name for a Web log. A blog is a personal Web page. It may contain stories, comments, pictures and links to other Web sites. Some people add information to their blogs every day. People who have blogs are called bloggers.
Blogs are not the same as spam. Spam is unwanted sales messages sent to your electronic mailbox. The name is based on a funny joke many years ago on a British television show, “ Monty Python’s Flying Circus”. Some friends are at an eating place that only serves a processed meat product from the United States called SPAM. Every time the friends try to speak, another group of people starts singing the word SPAM very loudly. This interferes with the friends’ discussion---just as unwanted sales messages interfere with communication over the Internet.
1.What is the passage mainly talking about?
A. Computer technology. B. Computer history.
C. Computer words. D. Computer experts.
2.Why is the small device called a mouse?
A. Because it was a carved block of wood.
B. Because it has two metal wheels.
C. Because it moves like a real mouse.
D. Because it has a “tail” at one end.
3.What do we know about hackers?
A. They are not computer experts.
B. They don’t write software programs.
C. They sometimes try to steal information.
D. They are always bloggers.
4.As a computer term, spam refers to________.
A. junk mail B. electronic mailboxes
C. sales messages D. processed meat products
高三英语阅读理解中等难度题查看答案及解析
A young man in Wuhan, Hubei Province has become the latest Internet sensation after a video showing his heart-warming act on a subway train went viral on social media 1.(recent).
In the video, the man can be seen 2.(hold) his mobile phone in his hand after falling asleep on a Metro, with a message in large font on the screen which reads, “Please wake me if you need my seat.”
The video 3.(record) by a fellow passenger who posted it on Weibo, The video, 4.length was just 7 seconds, has been viewed more than 19 million times in just two days. Chinese netizens were greatly touched by the young man’s act and applauded him for his kind 5.(behave). A web user even commented, “I only needed 7 seconds to fall6.love with this young man.
The humble man 7.(refuse) an interview invitation after becoming an Internet star and said that he just did 8.he felt he should. In a Weibo post , he thanked netizens for 9.(they) love and praise. He said he would always fall asleep when he had nothing to do on the train but worried others may need the seat, so he got 10.idea of making a message on his phone screen.
高三英语语法填空中等难度题查看答案及解析
Videos and video calls are becoming increasingly popular on social media in China, particularly on WeChat, the country’s most-used messaging app. We Chat’s 1.08 billion monthly active users last year made 410 million daily video and audio calls. That was 5.7 times more than in 2015, when WeChat first disclosed its operational data.
Uploading videos on WeChat Moments, a function that allows users to share their latest whereabouts, has become more widely used, with the number of videos posted multiplying 4.8 times in the past 4 years.
As a one-stop solution for Chinese people’s daily lives, We Chat has been able to produce a breakdown of its users’ preferences by age group. Those born in the 1980s for example are followers of news related to state and public affairs, whereas those younger than 20 spend the most on sweet treats.
In line with previous findings, China’s elderly population are becoming adept at using WeChat as a means of communication and conducting errands (办差事). As of September 2018, over 63 million users were registered as 55 years old or above. This group recorded an average length of 11 minutes for video calls, topping all age groups. We Chat Wallet has also registered exponential (指数的) growth, with payments in public transportation and high-speed traffic rising 4.7 times and 6.3 times, separately. Spending in retail stores and dining via WeChat rose by 1.5 times and 1.7 times. The number of users who use the app for making medical appointments and paying bills almost tripled.
1.Which of the following is closer to the truth according to the passage?
A. The number of videos posted has declined in the past 4 years.
B. The users’ preferences for WeChat can be various by age group.
C. Downloading videos on WeChat Moments is widely banned officially.
D. The number of users’ spending in retail stores and dining via WeChat will be doubled.
2.From what column on a certain website is the above passage most probably taken?
A. VIDEOS B. ADVERTISING
C. BUSINESS D. CAREER DEVELOPMENT
3.What does the underlined word “adept” in the last paragraph roughly mean?
A. disappointed B. inexperienced
C. surprised D. skilled
4.What is the passage mainly concerned about accordingly?
A. Video use continues to rise sharply on WeChat.
B. WeChat video calls are more frequently used by those younger than 20.
C. The post-80s are more likely fond of public affairs as well as sweet treats.
D. Making medical appointments and payments on We Chat will be more convenient.
高三英语阅读理解中等难度题查看答案及解析