Believe it or not, cell phones have been around for over a quarter of a century.The first commercial cell phone system was developed by the Japanese in 1979. But cell phones have changed a lot since that time. The early cell phones appeared big and heavy but they have developed into small and light palmsized models. There have been huge developments in their functions,too. We have had call forwarding, text messaging, answering services and handsfree use for years, but now the manufacturers equip countless new facilities, such as instant access to the Internet and receiving and Sending photos.
Cell phones have become very common in our lives;recent statistics suggest as many as one in three people on the planet now has a cell phone, and most of them say they couldn't live without one. Cell phones are used in every area of our lives and have become a necessary tool, used for essential arrangements, social contact and business. They have made it easier to call for help on the highway. They have made it possible to keep in touch with people “on the move” when people are traveling.
Cell phones have made communication easier and have reduced the need for family arguments. We can use cell phones to let our family know we'll be late or if there's a change of plan or an emergency. Cell phones have eased the worries of millions of parents when their teenagers are out late, and they can now contact their children at any time.
This does not mean that cell phones are all good news. They have brought with them a number of new headaches for their owners: it costs a lot to replace stolen phones, something that is becoming a frequent occurrence, and have you ever seen such huge phone bills? More serious, however, is the potential health problem they bring: there are fears that radiation from the phones may cause brain tumor(肿瘤). This may be a time bomb waiting to happen to younger people who have grown up with cell phones that they simply can't live without.
高三英语其他题中等难度题
Believe it or not, cell phones have been around for over a quarter of a century.The first commercial cell phone system was developed by the Japanese in 1979. But cell phones have changed a lot since that time. The early cell phones appeared big and heavy but they have developed into small and light palmsized models. There have been huge developments in their functions,too. We have had call forwarding, text messaging, answering services and handsfree use for years, but now the manufacturers equip countless new facilities, such as instant access to the Internet and receiving and Sending photos.
Cell phones have become very common in our lives;recent statistics suggest as many as one in three people on the planet now has a cell phone, and most of them say they couldn't live without one. Cell phones are used in every area of our lives and have become a necessary tool, used for essential arrangements, social contact and business. They have made it easier to call for help on the highway. They have made it possible to keep in touch with people “on the move” when people are traveling.
Cell phones have made communication easier and have reduced the need for family arguments. We can use cell phones to let our family know we'll be late or if there's a change of plan or an emergency. Cell phones have eased the worries of millions of parents when their teenagers are out late, and they can now contact their children at any time.
This does not mean that cell phones are all good news. They have brought with them a number of new headaches for their owners: it costs a lot to replace stolen phones, something that is becoming a frequent occurrence, and have you ever seen such huge phone bills? More serious, however, is the potential health problem they bring: there are fears that radiation from the phones may cause brain tumor(肿瘤). This may be a time bomb waiting to happen to younger people who have grown up with cell phones that they simply can't live without.
高三英语其他题中等难度题查看答案及解析
Cell phones: is there a cancer link?
Could your cell phone give you cancer? Whether it could or not, some people are worrying about the possibility that phones, power lines and Wi-Fi could be responsible for a range of illnesses, from rashes to brain tumors.
Some say there is evidence to support the growing anxieties. David Carpenter, a professor of environmental health sciences at the university at Albany, in New York, thinks there’s a greater than 95 percent chance that power lines can cause childhood leukemia(白血病). Also there’s a greater than 90 percent chance that cell phones can cause brain tumors. “It’s apparent now that there’s a real risk, ” said Carpenter.
But others believe these concerns are unjustified. Dr Martha Linet, the head of radiation epidemiology(流行病学) at the US National Cancer Institute, has looked at the same research as Carpenter but has reached a different conclusion. “I don’t support warning labels for cell phones, ” said Linet. “We don’t have the evidence that there’s much danger. ”
Studies so far suggest a weak connection between EMFs(电磁场) and illness— so weak that it might not exist at all. A multinational investigation of cell phones and brain cancer, in 13 countries outside the US, has been underway for several years. It’s funded in part by the European Union, in part by a cell phone industry group. The final report should come out later this year, but data so far don’t suggest a strong link between cell phone use and cancer risk.
1.From the passage we can learn that some people are worried because _______.
A. they have evidence that the use of cell phones can lead to cancer
B. they make a fuss over cell phone use
C. some experts have given a warning
D. cell phones are responsible for brain tumors
2.By saying “I don’t support warning labels for cell phones, ” Dr Martha Linet has the idea that _______.
A. the worrying is unnecessary
B. cancer-warning labels should be on cell phones
C. there is a link between cell phones and cancer
D. cell phones have nothing to do with cancer
3.Which of the following best describes the attitude of the author towards the debate?
A. Optimistic. B. Objective.
C. Opposite. D. Casual. ]
高三英语阅读理解中等难度题查看答案及解析
—Believe it or not, I have met him before.
—No kidding? ________ you've never mentioned it?
A.What for B.How come
C.How about D.What if
高三英语单项填空中等难度题查看答案及解析
Believe it or not, the size of the human brain has become smaller over the past 20,000 years. Scientists argue over whether this means we are becoming more or less intelligent as a species.
“I’d call that a major downsizing in an evolutionary eye blink (眨眼),” John Hawks told Discover magazine.
Why is the brain becoming smaller?
There are different theories to explain it. One is that tens of thousands of years ago, before the decline began, to survive in cold and dangerous conditions, humans needed a stronger and larger body and therefore, a larger head. Also they had to chew the tough meat of rabbits, foxes and horses. As conditions improved, the brain stopped growing, according to supporters of this theory.
Another theory comes from a recent study by David Geary and Drew Bailey. They found that brain size decreased as population density(密度) increased.
“As complex societies appeared, the brain became smaller because people did not have to be as smart to stay alive.” Geary told AFP.
But smaller brain size does not necessarily mean that modern humans are less smart than their ancestors. “Modern humans simply developed different, more complex forms of intelligence,” said Brian Hare.
Hare’s studies focus on two types of great apes: chimpanzees and bonobos. Both are much like humans, but are physically quite different from one another. The bonobo has a smaller brain than the chimpanzee, and is also much less aggressive and more tolerant.
“When it comes to working out a problem,” Hare said, “chimpanzees are much less likely to accomplish it if it involves working together. Not so with bonobos.”
The smaller brain in modern humans may be evidence that we can cooperate,” Hare told the US National Public Radio.
1.Which of the following words can be used to replace the underlined word in Paragraph 2?
A. speed B. increase
C. decline D. change
2.We can learn from the passage that ____________.
A. the size of human brain has something to do with many factors
B. the brain size increases because of the increase of population density
C. the abilities of the bonobos and the chimpanzees are almost the same
D. modern humans can certainly do teamwork better than other species
3.According to Brian Hare, _____________.
A. bonobos are much likely to cooperate better than chimpanzees
B. chimpanzees tend to work well with others
C. modern humans are less smart their ancestors
D. small brains are certainly connected with intelligent beings
4.Which of following is probably the best title of the passage?
A. Bonobo or Chimpanzee—Which Smarter?
B. Smaller Brain--Less Intelligent?
C. Human and Animal—More Intelligent?
D. Human Brain-Why Downsizing?
高三英语阅读理解中等难度题查看答案及解析
A book is made of wood. But it is not a tree. The dead cells have been repurposed to serve another need.
Now a team of scientists has repurposed living cells—scraped(刮落)from frog embryos—and assembled them into entirely new life forms. These millimeter-wide “xenobots” can move toward a target, perhaps pick up a payload(like a medicine that needs to be carried to a specific place inside a patient)—and heal themselves after being cut.
“These are novel living machines,” says Joshua Bongard, a computer scientist and robotics expert at the University of Vermont who co-led the new research. “They're neither a traditional robot nor a known species of animal. It's a new class of artifact:a living, programmable organism.” “We can imagine many useful applications of these living robots that other machines can't do,” says co-leader Michael Levin, “like searching out nasty compounds or radioactive contamination(污染物), gathering microplastic in the oceans, traveling in arteries(动脉)to scrape out plaque.”
People have been manipulating(操纵)organisms for human benefit since at least the dawn of agriculture, genetic editing is becoming widespread, and a few artificial organisms have been manually assembled in the past few years—copying the body forms of known animals. But this research, for the first time ever, “designs completely biological machines from the ground up," the team writes in their new study.
Many people worry about the implications of rapid technological change and complex biological manipulations. "That fear is not unreasonable,” Levin says. "When we start to deal with complex systems that we don't understand, we're going to get unintended consequences.” “If humanity is going to survive into the future, we need to better understand how complex properties, somehow, emerge from simple rules,” says Levin. Much of science is focused on "controlling the low-level rules. We also need to understand the high-level rules." In other words, “this study is a direct contribution to getting a handle on what people are afraid of, which is unintended consequences,” Levin says.
1.What do we know about the “xenobots” from Paragraph 2?
A.They need to be carried to a specific place.
B.They're capable of self-healing after injury.
C.They are scraped from some new life forms.
D.They can remove an object to another place.
2.Michael Levin thinks these living robots can __________.
A.recycle microplastic in the oceans
B.take in nasty compounds
C.programme other organisms
D.take away the plaque in arteries
3.What does the underlined sentence(in Paragraph 4)probably mean?
A.People never created these biological robots in history.
B.These machines were copied from the very beginning.
C.The research is completely carried out on the playground.
D.Organisms have been developed since agriculture.
4.What can be inferred from the last paragraph?
A.This study is bound to bring about panic in public.
B.People boycott employing rapid technological change.
C.Science is focused on controlling the low-level rules.
D.Some study is likely to contribute to unexpected results.
高三英语阅读理解困难题查看答案及解析
I have no idea ________ the cell phone isn’t working, so could you fix it for me?
A.what B.why C.if D.which
高三英语单项填空中等难度题查看答案及解析
Believe it or not, the Great Wall, which _______ by people, should be protected at once.
A. has been destroyed B. is destroyed C. was destroyed D. is being destroyed
高三英语单项填空简单题查看答案及解析
Vampires (吸血鬼), creatures of myth, have been around in one form or another for centuries. Terrifying but also attractive, they are as popular in the early 21 st century as ever, as the current popularity of Twilight series, and its hero Edward Cullen, show.
Vampires first appeared in fiction in the 1700s. in 1895 Irish novelist Bram Stoker published Dracula, introducing the world’s most famous vampire.
But just what is it about these drinkers of human blood that continues to fascinate us? Speaking to Eric Lewis of the Times and Transcript website, academic Deborah Wells said that vampires are “culturally adaptive”. “We create very different vampires to fit different times. Edward Cullen is not the same as Count Dracula,” she said.
Different as they are, Wells believes vampires are “the perfect containers into which we can pour our current cultural anxieties”, Bram Stoker’s Dracula is powerful, yet old and physically ugly. Stoker’s book dealt with fear of the fall of the British Empire, real fears in the day in which it was written.
According to the website Bookrags, today’s vampires have all our cultural desires, money, power and sexual attraction. Represented by Cullen, they are noble, handsome young men whom women find irresistible. What’s more, vampires challenge traditional ideas about death, science and parental authority. This may be why teenagers are drawn to vampire tales.
“In many ways, the vampire story shows up teenage concerns,” said wells. “The emotional intensity (强度) of the relationship with the vampire matches the intensity of how it feels to have your first real love affairs. Your first real love, it really feels like life and death.”
55.The best title for this passage should be_______.
A.Vampires may continue to drink our blood
B.Vampires have been around us for long
C.Why Twilight is so popular nowadays
D.We still like the story about vampires
56.What is the image of the vampire in Bram Stoker’s book?
A.Anxious but perfect.
B.Powerful, old and ugly.
C.Terrifying but also attractive.
D.Afraid of the fall of the British Empire.
57.According to the website Bookrages, today’s vampires_______.
A.desire money, power and sexual attraction
B.may not think highly of parental authority
C.dare to give up traditional ideas
D.are likely to be resisted by women
58.Which of the following statements is true according to Wells?
A.People need different vampires in different times.
B.Our current cultural anxieties are hidden in vampires.
C.The vampire story reflects the conches of the teenagers.
D.The relationship with the vampire equals your first real love.
高三英语阅读理解简单题查看答案及解析
Believe it or not, school uniforms are absolutely not only clothes for students. They stand for the culture or beauty appreciation standard of a country. Let’s take a look at school uniforms in different nations.
School Uniforms in England
Style of English school uniforms is rather classic, simple and elegant. Boys wear conventional western-style clothes, regular leather shoes and must wear neckties. Girls also wear western-style clothes, regular leather shoes and must wear bow-ties. This classic clothing style unconsciously affects English students’ temperament (气质) and also sense of beauty.
School Uniforms in Korea
Do you still remember the classic scenes in My Sassy Girl? If you’ve watched it, you will know how stylish Korean students’ uniforms are. Boys wear nice white shirts and western-style trousers. Girls wear white shirts, lovely skirts of latest design and bow knots.
School Uniforms in Malaysia
Students in Malaysia obey rather strict rules. Girls’ dresses must be long enough to cover the knees. Shirts must cover the elbows. Compared with Thai students, they are much more conservative.
School Uniforms in Japan
For students, school uniforms in Japan are not only symbols for schools, but also symbols for the current fashion trends, even affecting students when choosing a school. Japanese school uniforms for girls originate in sailor suits. So they are also called sailor suits or sailor uniforms. Cartoon elements are used on them. Japanese school uniforms for boys are classic dark-colored clothes with stand-up collars, similar to Chinese tunic suits.
1.What are the English school uniforms like?
A. Fashionable. B. Conservative.
C. Traditional. D. Cute.
2.In which way are Korean and Japanese school uniforms similar?
A. Both of them are fashionable. B. Both of them are eastern-style.
C. Both of them are affected by Chinese. D. Both of them are dark-colored.
3.Who might choose schools based on school uniforms?
A. English Students. B. Korean students.
C. Malaysian students. D. Japanese students.
高三英语阅读理解中等难度题查看答案及解析
For many years we have been keeping in ____by sending each other e-mails or phone calls.
A.connection | B.contrast | C.relation | D.touch |
高三英语单项填空中等难度题查看答案及解析