A team of engineers at Harvard University has been inspired by Nature to create the first robotic fly. The mechanical fly has become a platform for a series of new high-tech systems. Designed to do what a fly does naturally, the tiny machine is the size of a fat housefly. Its mini wings allow it to stay in the air and perform controlled flight tasks.
“It’s extremely important for us to think about this as a whole system and not just a bunch of individual components (零件),” said Robert Wood, the Harvard engineering professor who has been working on the robotic fly project for over a decade. “The added difficulty with such a project is that actually none of those components are off the shelf and so we have to make them all on our own,” he said.
They engineered a series of systems to start and drive the robotic fly. “The seemingly simple system which just moves the wings has a number of individual components, each of which individually has to perform well, and then has to be matched well to everything it’s connected to,” said Wood. The flight device was built into a set of power, computation, sensing and control systems. Wood says the success of the project proves that the flying robot with these tiny components can be built and manufactured.
Wood says the design offers a new way to study flight mechanics and control at insect- scale. Yet, the power, sensing and computation technologies on board could have much broader applications (应用). “You can start thinking about using them to answer open scientific questions, you know, to study biology in ways that would be difficult with the animals, but using these robots instead,” he said. “So there are a lot of technologies and open interesting scientific questions that are really what drives us on a day to day basis.”
1.What challenge did the engineers have when making the robotic fly?
A. They don’t have enough related knowledge.
B. They are lack of ready-made components.
C. The system is too complex to work.
D. They fail to control all the components.
2.What does the success of the robotic fly prove?
A. Scientists are able to make tiny flying machines.
B. Humans will create a new kind of species for the nature.
C. The flight device will not need so many components.
D. It will help to kill dangerous insects in the nature.
3.What does Wood hope to do with the flying device?
A. To fix the system on other animals.
B. To put it to the market for money.
C. To solve more scientific problems.
D. To encourage people to learn biology.
4.How does Wood feel about the application of the robotic fly?
A. Worried B. Curious.
C. Doubtful. D. Confident.
高一英语阅读理解困难题
A team of engineers at Harvard University has been inspired by Nature to create the first robotic fly. The mechanical fly has become a platform for a series of new high-tech systems. Designed to do what a fly does naturally, the tiny machine is the size of a fat housefly. Its mini wings allow it to stay in the air and perform controlled flight tasks.
“It’s extremely important for us to think about this as a whole system and not just a bunch of individual components (零件),” said Robert Wood, the Harvard engineering professor who has been working on the robotic fly project for over a decade. “The added difficulty with such a project is that actually none of those components are off the shelf and so we have to make them all on our own,” he said.
They engineered a series of systems to start and drive the robotic fly. “The seemingly simple system which just moves the wings has a number of individual components, each of which individually has to perform well, and then has to be matched well to everything it’s connected to,” said Wood. The flight device was built into a set of power, computation, sensing and control systems. Wood says the success of the project proves that the flying robot with these tiny components can be built and manufactured.
Wood says the design offers a new way to study flight mechanics and control at insect- scale. Yet, the power, sensing and computation technologies on board could have much broader applications (应用). “You can start thinking about using them to answer open scientific questions, you know, to study biology in ways that would be difficult with the animals, but using these robots instead,” he said. “So there are a lot of technologies and open interesting scientific questions that are really what drives us on a day to day basis.”
1.What challenge did the engineers have when making the robotic fly?
A. They don’t have enough related knowledge.
B. They are lack of ready-made components.
C. The system is too complex to work.
D. They fail to control all the components.
2.What does the success of the robotic fly prove?
A. Scientists are able to make tiny flying machines.
B. Humans will create a new kind of species for the nature.
C. The flight device will not need so many components.
D. It will help to kill dangerous insects in the nature.
3.What does Wood hope to do with the flying device?
A. To fix the system on other animals.
B. To put it to the market for money.
C. To solve more scientific problems.
D. To encourage people to learn biology.
4.How does Wood feel about the application of the robotic fly?
A. Worried B. Curious.
C. Doubtful. D. Confident.
高一英语阅读理解困难题查看答案及解析
— My daughter has been _______ to Harvard University.
— Congratulations.
A.required B.intended
C.admitted D.supposed
高一英语单项填空中等难度题查看答案及解析
Tom has been dreaming of becoming a banker and I believe he finance in university at the age of 20.
A. will be studying B. had studied
C. has studied D. would study
高一英语单项填空困难题查看答案及解析
A team of researchers at the University of Illinois at Chicago found that too many kids are eating too much pizza and too many calories are doing harm to children’s health.
“There are a lot of takeaways from the study. But the biggest thing is that parents are serving their kids too much pizza,” said Dr.William Dietz, one of the study’s authors and the director of the Sumner M. Redstone Global Center for Prevention and Wellness at the Milken Institute of Public Health at the George Washington University.
The researchers used data from the National Health and Nutrition Examination Survey, which tracked the diets of more than 11,000 children and teenagers. Researchers figured how many children eat pizza in the United States, how often they eat it, and how much they eat when they do.
Pizza, pretty alarmingly, is the second leading source of calories in the diets of America’s children, next only to grain desserts, such as cookies and other sweets. On any given day, roughly 20 percent of all children aged 2 to 11 and adolescents aged 12 to 19 eat pizza. And when they do, they eat a lot of it. When children eat pizza, they eat roughly 400 calories, according to the study. For teenagers, it’s upwards of 600 calories.
All that is pretty problematic, according to Dietz largely because kids don’t tend to balance the pizza slices with salads, vegetables and other more nutritional(有营养的) foodstuffs. Days on which children and teenagers eat pizza are not only associated with considerably higher intakes of fat, but also, quite simply, with more food: on average, children consume 84 extra calories on the days they eat pizza, while adolescents consume an extra 230 calories.
“When you eat extra calories and don’t compensate(抵偿) for them at another point of the day or week, it can lead to weight gain and even obesity.”Dietz said.
There is a Silver lining. Pizza consumption is still too high by nutrition standards, but it’s lower than it used to be. Consumption(消费) fell by roughly 25 percent between 2007 and 2016, according to the study. Much of that has come at dinner where it's fallen by 40 percent for children and about 33 percent for teenagers. It’s unclear whether the decline has been in connection with a growing concern over obesity, especially among the country’s youth.
But the drop in pizza consumption, while significant hasn’t been big enough “It’s a positive trend,” Dietz said. “But we’re not quite them yet.”
It’s easy to see the appeal of pizza. It’s cheap. Parents can buy a lot of pizza for not a lot of money. Besides, they can buy pizza from a chain shop, a mom-and-pop store or a grocery freezer. And it’s universally loved. The estimated 3 billion pizza eaten each year in the United States is a proof of the food’s unmatched popularity. Given how much the country loves pizza, what’s to be done? Dietz suggests pizza with smaller serving sizes and healthier toppings(配料). “We’re not suggesting that kids avoid pizza altogether.” said Dietz. “But when parents serve it, it’s important that they understand it’s extremely caloric. They should serve smaller pizza, or at least smaller slices.”
1.According to the study, the problem with kids is that .
A. they are overweight B. they have too many takeaways
C. they are fed too much pizza D. they have very bad health
2.How did the researchers get the result?
A. Through interviewing. B. By analyzing data.
C. By tracking kids’ diets. D. Through experimenting.
3.We know from the passage that when kids eat pizza, .
A. they usually don’t eat other food B. they eat less of other food
C. they are not likely to balance their diet D. they usually eat with vegetables
4.What does the underlined part a silver lining in Paragraph 7 probably mean?
A. Something hopeful B. Something valuable.
C. Something miserable. D. Something successful.
5.What’s the key message of the last paragraph?
A. Pizza consumption fell significantly in America.
B. Pizza has many advantages over other food.
C. Eating too much pizza can lead to failing health and obesity.
D. The pizza problem may be improved through its size and topping.
高一英语阅读理解困难题查看答案及解析
A team of researchers from Oxford University has demonstrated a self-driving car that is different from such cars being tested by Audi, Ford, etc. It’ s much cheaper because it’s based on off-the-shelf(现成的) technology and controlled by an ordinary iPad. Instead of using GPS to understand the location, the car learns routes when a person is driving, and then asks after it’s got it down, if the driver would like the computer to take over.
As time passes, it’s becoming very clear that people believe computers would be better drivers than humans. This has been proven by extensive research that indicates that computers are able to react more quickly to driving conditions, make smarter decisions, don’t take risks, and don’t make mistakes in concentration. They don’t drink either, of course, which means accidents due to drunk driving could be reduced dramatically if the computer could take over when someone needs to get home from the bar. And the team says drivers don’t need their cars to know everything about every road, condition or possible danger. Instead, they just need to know how to get from one point to another, and to do a good job of it when asked.
To that end, the researchers have added cameras, lasers, a central computer to process information and a regular iPad. In practice, the car would learn how to get to and from places that the driver frequents, such as their work place, the local pub or grocery store. Once it has it down, the computer asks the driver if they’ d like a rest. If so, they simply tap the iPad, and the car takes over.
It’ s very simple and doesn’t require nearly the same number of devices as those being tested by other car companies. The researchers say people might be able to get the total price of the system below a hundred dollars. And of course, the iPad can be lifted out and carried away for other purposes when not being used as a driver assistant.
1.The car tested by Oxford University are different from others in that they ________.
A. use available low-cost technology
B. depend on GPS to understand the location
C. can choose the places for their owners to visit
D. can develop a good relationship with their owners
2.Computers are believed to be better drivers than humans mainly because they ________.
A. are more likely to take risks
B. are more familiar with every road
C. become more skilful at avoiding dangers
D. can respond to new situations more quickly
3.We can infer from the passage that the iPad __________.
A. cannot be removed from cars when it’s not used
B. has replaced cameras, lasers and a central computer
C. needs to be specially designed for a self-driving car
D. acts as a tool for drivers to control their self-driving cars
4.What best describes the author’s tone in this passage?
A. Objective. B. Worried.
C. Serious D. Subjective.
5.In which column of a newspaper can we find this passage?
A. Opinion B. Fashion C. Technology D. Education
高一英语阅读理解中等难度题查看答案及解析
The committee________scientists and engineers has been set up.
A. making up of B. consisting of C. to make up D. consisted of
高一英语单项填空困难题查看答案及解析
Research at the University of Liverpool, UK, has found that Shakespeare’s language stimulates positive brain activity.
Shakespeare uses a linguistic(语言的)technique known as functional change that involves, for example, using a noun to serve as a verb.Researchers found that this technique allows the brain to understand what a word means before it understands the function of the word within a sentence.This process causes a sudden peak in brain activity and forces the brain to work backwards in order to fully understand what Shakespeare is trying to say.
Professor Philip Davis, from the university’s School of English, said: “The brain reacts to reading a phrase such as ‘he godded me’ from the tragedy of Coriolanus, in a similar way to putting a jigsaw puzzle(拼图玩具)together.If it is easy to see which pieces fit together you become bored of the game.But if the pieces don’t appear to fit, when we know they should, the brain becomes excited.By throwing irregular words into seemingly normal sentences, Shakespeare surprises the brain in a manner that produces a sudden burst of activity — a sense of drama created out of the simplest of things.”
Experts believe that this heightened brain activity may be one of the reasons why Shakespeare’s plays have such a dramatic impact on their readers.
Professor Neil Roberts, from the university’s Magnetic Resonance and Image Analysis Research Center, and Professor Davis, together with Dr Guillaune Thierry, from the University of Wales, UK, monitored 20 participants using an electroencephalogram (EEG) as they read selected lines from Shakespeare’s plays.
“The brain signal is relatively stable when we understand the meaning of a word but when the word changes the grammar of the whole sentence, brain readings suddenly peak.The brain is then forced to retrace its thinking process in order to understand what it is supposed to make of this unusual word,” explains Professor Roberts.
1.The research conducted by the professors has showed that ___________.
A.Shakespeare uses functional change to mislead readers
B.Shakespeare’s language excites positive brain activity.
C.Shakespeare’s plays have a dramatic effect on their readers.
D.Shakespeare’s language makes the brain signal relatively stable
2.Which of the following words can replace the underlined pronoun “it” in the 2nd paragraph?
A.technique B.word C.brain C.sentence
3.In the 3rd paragraph, the example of a jigsaw puzzle is used here to state___________.
A.the function of Shakespeare’s linguistic technique
B.a sense of drama created by playing the game
C.the Shakespeare’s thinking process
D.the brain’s reaction to reading a book
4.Based on the research, Shakespeare’s plays have a great effect on their reader lies in_______.
A.language used in plays
B.characters showed in works
C.brain activity increased in reading
D.thinking process when writing
高一英语阅读理解简单题查看答案及解析
Over the years, Brian Wansink, director of the Food and Brand Lab at Cornell University, has studied such things as how far Americans typically drive to buy food, how many times we refill our plates at all-you-can-eat buffets and how we organize our kitchens. In the mid-2000s he famously coined the phrase “mindless eating”(and wrote a book by that name) to focus attention on all the bad dietary decisions we make without really thinking about them.
His new book, Slim by Design: Mindless Eating Solutions for Everyday Life, aims to change the design of restaurants, school lunchrooms, office cafeterias and homes so that the mindless choices we make will be more healthful ones. Some examples:
Keep kitchen counters clear. No visible snack food, no bread, no nuts — not even breakfast cereal. In Wansink’s research, “women who had even one box of breakfast cereal that was visible — anywhere in their kitchen — weighed 21 pounds more than their neighbor who didn’t.”
Trick yourself into drinking less wine. “We tend to focus on the height of what we pour and not the width, so we pour 12 percent less wine into taller wineglasses than we pour into wider wineglasses.” And the shape of the glass is not the only variable that affects how much we drink. Wansink writes: “Because red wine is easier to see than white wine, we pour 9 percent less red wine whenever we pour a glass.”
Wansink said his researchers also found that people ate less at restaurants when sat in well-lighted areas near windows and doors, than in darker areas or in the back. They ate less if they were offered a doggie bag, or to-go box, before they got their meals: apparently the idea of getting a “free” second meal outweighed the impulse (冲动) to clean their plates. Workers who frequently ate at their desks weighed 15.4 pounds less, on average, than those who didn’t. Fruits and vegetables kept on the top shelf of the refrigerator were eaten at higher rates than those on lower shelves.
The point, Wansink says, is to consider findings like those and change your environment or habits. Then you won’t have to think about it: You’ll just eat less.
1.Why did Brian Wansink write Slim by Design: Mindless eating Solutions for Everyday Life?
A. Because he wanted people to become thin.
B. Because he wished to change the design of dining places.
C. Because he hoped to coin a new phrase “mindless eating”.
D. Because he intended to help people make more healthful dietary decision.
2.According to Wansink, which of the following affects the amount of wine we drink ____.
A. the shape of wineglasses B. the color of wineglasses
C. the taste of wine D. the quality of wine
3.The underlined phrase a “doggie bag” in paragraph 5 probably means ____.
A. a bag for carrying dogs B. a box for takeaway food
C. a container for leftovers D. a bag for carrying dog food
4.What’s the main idea of the passage?
A. Changing environment or habits of eating will help you eat less.
B. Eating fruits and vegetables is better for your health.
C. Keeping your kitchen counter clear of any food will help make you thin.
D. Many people eat or drink too much without paying attention to it.
高一英语阅读理解中等难度题查看答案及解析
He, as well as his sister, to enter Harvard University recently because of excellent behaviors.
A. has been allowed B. have been allowed
C. has allowed D. have allowed
高一英语单项填空中等难度题查看答案及解析
Started in 1636, Harvard University is the oldest of all the many colleges and universities in the United States. Yale, Princeton, Columbia and Dartmouth were opened soon after Harvard.
In the early years, these schools were much alike. Only young men went to colleges. All the students studied the same subjects, and everyone learned Latin, Greek and Hebrew. Little was known about science then, and one kind of school could teach everything that was known about the world. When the students graduated, most of them become ministers or teachers.
In 1782, Harvard started a medical school for young men who wanted to become doctors. Later, lawyers could receive their training in Harvard’s law school. In 1825, besides Latin and Greek, Harvard began teaching modern languages, such as French and German. Soon it began teaching American history.
As knowledge increased, Harvard and other colleges began to teach many new subjects. Students were allowed to choose the subjects that interested them.
Today there are many different kinds of colleges and universities. Most of them are made up of smaller schools that deal with special fields of learning. There’s so much to learn that one kind of school can’ offer it all.
1.From the second paragraph, we can see that in the early years, ______.
A. those colleges and universities were almost the same
B. people, young or old, might study in the colleges
C. the students studied only some languages and science
D. when the students finished their school, they became lawyers or teachers
2.As knowledge increased, colleges began to teach ______.
A. everything that was known
B. law and something about medicine
C. many new subjects
D. the subjects that interested students
3.On the whole, the passage is about ______.
A. how to start a university
B. the world-famous colleges in America
C. how colleges have changed
D. what kind of lessons each college teaches
高一英语阅读理解中等难度题查看答案及解析