Butterflies are some of the most fascinating and beautiful insects in the world. Adult butterflies will live about 2 to 4 weeks. They use their senses of sight, touch, hearing, smell, and taste to survive in the world, find food and mates, lay eggs in an appropriate place, migrate, and avoid hungry enemies.
Butterflies have large compound eyes, which allow them to see in all directions without turning their heads. Like most insects, butterflies are very nearsighted, so they are more attracted to a sea of flowers than individual plants. Butterflies do not “see” colors such as red, green, and yellow, but they can sense sunlight, which indicates the direction the sun is shining, as well as ultraviolet light, which is present on many flowers and guides butterflies to honey sources.
Butterflies have a very well-developed sense of smell, but it is not in their nose, since they don't have one. Sense receptors are located in their antennae, feet, and many other parts of the body. They can help butterflies find their favorite flower honey food, and mates.
Butterflies' feet have sense organs that can taste the sugar in flower honey, letting the butterflies know if something is good to eat or not. Some females also carefully choose host plants by tasting to find appropriate places to lay their eggs. Adult butterflies feed their babies using a long tube. Butterflies force blood into the tube to straighten it out, allowing them to feed. Butterflies get all their food from this tube.
Butterflies don't have ears. Instead they “hear” sounds through their wings by sensing changes in sound vibrations.
Butterflies may possess senses we don't even know about yet, because their body structure is very different from ours, and therefore difficult to understand, when observed through our own human senses.
【小題1】The text mainly focuses on ________.
A.butterflies' living habits | B.butterflies' beauty |
C.butterflies' senses | D.butterflies' daily activities |
A.Butterflies can see in all directions and don't need to turn heads. |
B.Butterflies have good eyesight. |
C.Butterflies are sensitive to bright colors including red and yellow. |
D.Butterflies cannot sense the ultraviolet light. |
A.To find highqualified honey. |
B.To have a good place for living. |
C.To make it easier for them to hide from the enemies. |
D.To find a proper place for their eggs. |
【小題1】C
【小題2】A
【小題3】D
解析試題分析:文章介紹了蝴蝶的各種感覺,包括每種感覺器官的功能和作用。
【小題1】主旨題:題目的意思是“文章主要專注于什么?”。在文中第一句話“Butterflies have large compound eyes, which allow them to see in all directions without turning their heads.可以體現(xiàn)出來,說明這篇文章主要講的是蝴蝶的感覺,因此選C。
【小題2】細(xì)節(jié)題:題目的意思是“我們從第二段了解到什么?”第二段的最后一句話“Such an inverted status display is most likely to occur where the person’s high status is conveyed in ways other than with clothing, such as having a famous face.”可知蝴蝶可以看見四面八方,不用轉(zhuǎn)動頭,選A。
【小題3】細(xì)節(jié)題:題目的意思是“為什么雌蝴蝶仔細(xì)選擇植物?”根據(jù)第四段的句子:Some females also carefully choose host plants by tasting to find appropriate places to lay their eggs.可知她們是想找一個適當(dāng)?shù)牡胤疆a(chǎn)卵,答案是D。
考點:考查科普類短文
科目:高中英語 來源: 題型:閱讀理解
Global Positioning Systems (全球定位系統(tǒng)) are now a part of everyday driving in many countries.These satellitebased systems provide turnbyturn directions to help people get to where they want to go.However,they can also cause a lot of problems,send you to the wrong place or leave you completely lost.Many times,the driver is to blame.Sometimes a GPS error is responsible.Most often,says Barry Brown,it is a combination of the two.
Barry Brown is with the Mobile Life Centre in Stockholm,Sweden.He told us about an incident involving a friend who had flown to an airport in the eastern United States.There he borrowed a GPSequipped car to use during his stay.Mr Brown says,“They just plugged in an address and then set off to their destination.And,then it wasn’t until they were driving for thirty minutes that they realized they actually put in a destination back on the West Coast where they lived.They actually put their home address in.So again,the GPS is kind of ‘garbage in garbage out’.”
Mr Brown says this is a common human error,but what makes the problem worse has to do with some of the shortcomings,or failures,of GPS equipment.He says,“One problem with a lot of the GPS units is they have a very small screen and they just tell you the next turn.Because they just give you the next turn,sometimes that means that it is not really giving you the overview that you would need to know that it’s going to the wrong place.”
Mr Brown says,“One of the things that struck us,perhaps the most important thing was that you have to know what you’re doing when you use a GPS.There are these new skills that people have developed.There are these new competencies (資格) that you need to have to be able to use a GPS because they sometimes go wrong.This goes against a common belief that GPS systems are for passive drivers who lack navigational skills.”
Barry Brown says to make GPS systems better we need a better understanding of how drivers,passengers and GPS systems work together.
【小題1】According to Barry Brow,in most cases,________are blame for the problems.
A.human errors |
B.GPS errors |
C.errors caused by both drivers and GPS |
D.errors caused by putting in a wrong address |
A.GPS is nothing but garbage |
B.GPS is still not accurate enough |
C.it is difficult for drivers to use GPS equipment |
D.sometimes drivers are responsible for the problem |
A.it’s impossible to drive from the east to the west in the US |
B.Barry Brown’s friend went to Stockholm,Sweden by plane |
C.given wrong instructions,the GPS will produce wrong results |
D.GPS systems are for passive drivers who lack navigational skills |
A.It just tells the driver to turn once at a time. |
B.It gives the driver the overview. |
C.Its screen is too small to be seen clearly. |
D.It is only suitable for passive drivers. |
A.GPS systems are helpful for drivers. |
B.Driving with GPS can be difficult to navigate (導(dǎo)航). |
C.Drivers should understand how GPS systems work. |
D.Drivers should learn to use GPS systems correctly. |
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科目:高中英語 來源: 題型:閱讀理解
The biggest danger facing airlines nowadays may not be a terrorist with a gun, but the man with portable computer in business class. In the last 16 years, pilots have reported well over 100 incidents that could have been caused by electromagnetic interference (電磁干擾). The source of this interference remains not proved, but increasingly, experts are pointing the blame at portable electronic devices such as portable computers, radio and cassette players and mobile telephones.
RTC.A. an organization which advises the aviation (航空 )industry, has suggested that all airlines ban such devices from being used during "critical" stages of flight particularly take- off and landing. Some experts have gone further, calling for a total ban during all flights .Cur- rently , rules on using these devices are left up to individual airlines. And although some air- lines prevent passengers from using such equipment during take-off and landing, most are un- willing to carry out a total ban, given that many passengers want to work during flight.
The difficulty is predicting how electromagnetic fields might affect an aircraft's computers. Experts know that portable devices send out radiation which affects those wavelengths which aircraft use for navigation and communication. But, because they have not been able to reproduce these effects in a laboratory. they have no way of knowing whether the interference might be. dangerous or not.
The fact that aircraft may be fragile to interference raises the risk that terrorists may use radio systems in order to damage navigation equipment. As worrying, though, is the passenger who can 't hear the instructions to turn off his radio because the music's too loud.
【小題1】What is said about the over 100 aircraft incidents in the past 16 years?
A.They may have been caused by the damage to-the radio systems. |
B.They may have taken place during take-off and landing. |
C.They were proved to have been caused by the passengers portable computers. |
D.They were suspected to have resulted from electromagnetic interference. |
A.Because it is extremely dangerous to conduct such research on an airplane. |
B.Because it remains a mystery what wavelengths are liable to be interfered with. |
C.Because research scientists have not been able to produce the same effects in labs. |
D.Because experts lack adequate equipment to do such research. |
A.they don't believe there is such a danger as radio interference |
B.the harmful effect of electromagnetic interference is yet to be proved |
C.most passengers refused to take a plane ,which bans the use of radio and cassette players |
D.they have other effective safety measures to fall back on |
A.a(chǎn) new rule for all airlines |
B.the disadvantages of electronic devices |
C.a(chǎn) possible cause of aircraft incidents |
D.effective safety measures for air flight |
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科目:高中英語 來源: 題型:閱讀理解
Humans might be the most highly-evolved species on the planet, but most animals possess skills we can only dream of having. Imagine how much electricity we could save if we could see in the dark the way cats do. Imagine leaping from tree to tree like a monkey. Giraffes, which are otherwise calm and good-natured, sleep only 4.6 hours a day.
We realized a long, long time ago that nature provides the best blueprint for invention. We’ve borrowed canals from beavers and reflectors from cat’s eyes. Although the words “bionics”(仿生學(xué)) became popular only after the 1960s, history shows that nature has always provided ideas on solving everyday problems. Our archives(檔案) don’t go back to the time of Leonardo da Vinci and his bird-like flying machines, but we can take you to the late 19th century, where we applied those same principles for building our first practical airplanes.
To prepare for their flight at Kitty Hawk, the Wright brothers studied the movements of pigeons to figure out how they stayed high up when they were heavier than air. Their success inspired scores of successors to improve on the airplane by studying various aspects of nature. One of Orville Wright’s pupils caught and stuffed seagulls to examine their wingspan. Meanwhile, two French inventors examined spinning sycamore(梧桐) seeds in an effort to apply those same motions, reversed, to a helicopter .
Some examples are more obvious than others. The outside of the airplane designed by the Wright brothers looks like a minimalistic(簡單抽象藝術(shù)) structure. On the other hand, Barney Connett’s fish submarine actually looks like a fish.
Some bio-inspired concepts have yet to be invented. In the 1960s, the US Army commissioned several university professors to conduct research on the motor skills animals in hope of applying those same abilities to tanks. Tanks that run like horses or jump like grasshoppers(螞蚱)-sounds shocking, doesn’t it? But imagine how life would change if we could achieve that.
【小題1】“Cats”, “monkeys” and “giraffes” mentioned in paragraph 1 are examples to show______.
A.they are highly-evolved species as humans |
B.a(chǎn)nimals have skills that humans do not possess |
C.humans can learn animals’ skills |
D.they are skillful in different ways |
A.People carried out a systematic study on pigeons. |
B.People studied more animals and plants to develop the airplane. |
C.People could fly their airplane for fun. |
D.People kept their airplane at a French gallery. |
A.It has cost a large sum of money. |
B.It has changed our life. |
C.It has improved the abilities of tanks |
D.It has not succeeded yet. |
A.many inventions get ideas from nature. |
B.Some animals possess unique skills. |
C.People should protect nature. |
D.Bionics is far from perfect |
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科目:高中英語 來源: 題型:閱讀理解
Want to travel as cheaply as possible while enjoying the great scenery as much as you like?
Backpacking is the way. As the most popular traveling choice among young western people, backpacking allows you to travel at your own free will. Carrying a tent, sleeping bag and clothes, backpackers also need to pack an attitude that will help them deal with many mental and physical challenges.
It is a thrill to put our ability to test and challenge ourselves with sorts of difficulties we might come across. So, backpacking is something young people can hardly deny.
Young people in Europe often travel around by train. Now, with plane tickets dropping in price, more are traveling to distant countries, such as Australia and China. And some just travel within their own countries.
But no matter where a backpacker travels, planning in advance is important if he or she wants to enjoy the trip.
Clothing
In summer, light, waterproof clothes are best. Backpackers must remember to travel lightly and not pack too many clothes.
Medicine
There are many medicines, especially for summer, such as those for sunstroke, snake bites and mosquitoes. Others are useful in every season, such as those for common colds, poisoning and diarrhea.
Cards
Three types of cards are of great value for backpacks: student Identity Card, personal ID and a credit card.
A student ID card can be helpful for saving money. It often gets train tickets and entrance tickets for cheaper prices in many Western countries.
Personal ID card can, not only get you out of trouble with local police, but also prove useful in all sorts of other situations.
Carrying a credit card can be a safe way of carrying money, as cash can easily get lost, stolen or wet.
And of course, don’t forget to enjoy your trip!
【小題1】What does the underlined sentence mean?
A.Backpackers also need to be in high spirits when they want to travel. |
B.Backpackers may also face dangerous situations. |
C.Backpackers also need to talk with doctors about their traveling. |
D.Backpackers need to make preparation for many kinds of difficulty in advance. |
A.Easy to wash. | B.Not letting water go through. | C.Washed without water. | D.Used in water. |
A.your student ID | B.your credit card | C.your personal ID | D.your passport |
A.They can travel very easily. |
B.They won’t worry about where to live. |
C.They can have the chance to take some adventures. |
D.They can take some physical exercise. |
A.To give some ideas about traveling. |
B.To encourage the young to travel. |
C.To tell people how to avoid something unpleasant. |
D.To offer some useful advice for traveling. |
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科目:高中英語 來源: 題型:閱讀理解
Today just as technology changed the face of industry, farms have undergone an “agricultural revolution”. On the farm of today, machines provide almost all the power.
One of the most important benefits will be the farm computer. A few forward-looking farmers are already using computers to help them run their farms more efficiently. The computers help them keep more accurate records so they can make better decisions on what crops to plant, how much livestock to buy, when to sell their products, and how much profit they can expect. Many computer companies have been developing special computer programs just for farmers. Programs are being written for hog producers, grain farmers, potato farmers, and dairy farmers. In the future, farmers will be able to purchase computer programs made to their needs. Because of the growing importance of computers on the farm, students at agricultural colleges are required to take computer classes in addition to their normal agricultural courses. There can be no doubt that farmers will rely on computers even more in the future. While the old-time farm depended on horse power, and modern farms depend on machine power, farms of the future will depend on computer power.
Another technological advance which is still in the experimental stage is the robot, a real “mechanized hired hand” that will be able to move and, in some ways, think like a human being. Agricultural engineers believe that computer-aided robots will make startling changes in farming before the end of the century. Unlike farmers of the present, farmers of the future will find that many day-to-day tasks will be done for them. Scientists are now developing robots that will be able to shear sheep, drive tractors, and harvest fruit. Even complex jobs will be done by robots. For example, in order to milk their cows, farmers must first drive them into the barn, then connect them to the milking machines, watch the machines, and disconnect them when they are finished. In the future, this will all be done by robots. In addition, when the milking is completed, the robots will automatically check to make sure that the milk is pure. The complete mobilization of the farm is far in the future, but engineers expect that some robots will be used before long.
【小題1】According to the passage, computers can NOT help farmers decide _______.
A.what livestock to raise |
B.whether to plant a certain kind of crop |
C.how much money they can earn from their products |
D.when to sell their products |
A.Farmers in the future will depend totally on computers. |
B.Both computers and robots have been in use on today’s farms. |
C.Farmers mainly use machines on their farms at present. |
D.Students at agricultural colleges must take computer classes because they can do nothing without the help of computers on today’s farms. |
A.a(chǎn)ll farm work | B.milking cows |
C.most of the farm work | D.some farm work |
A.Computer, Farmers’ Best Friend |
B.The Agricultural Revolution |
C.Farmers in The Future |
D.Computers and Robots |
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科目:高中英語 來源: 題型:閱讀理解
Using too much water or throwing rubbish into our rivers are clear ways that humans can put our water supply in danger, but we also affect our water supply in less obvious ways. You may wonder how paving(鋪砌) a road can lead to less usable fresh water. A major part of the water we use every day is groundwater. Groundwater does not come from lakes or rivers. It comes from underground. The more roads and parking lots we pave, the less water can flow into the ground to become groundwater.
Human activity is not responsible for all water shortages(短缺). Drier climates are of course more likely to have droughts(干旱) than areas with more rainfall, but in any case, good management can help to make sure there is enough water to meet our basic needs.
Thinking about the way we use water every day can make a big difference, too. In the United States, a family of four can use 1.5tons of water a day! This shows how much we depend on water to live, but there's a lot we can do to lower the number.
You can take steps to save water in your home. To start with, use the same glass for your drinking water all day. Wash it only once a day. Run your dishwasher only when it is full. Help your parents fix any leaks (泄露、漏洞)in your home. You can even help to keep our water supply clean by recycling batteries instead of throwing them away.
【小題1】Which of the following is most likely to lead to less groundwater?
A.Using river water. | B.Throwing batteries away. |
C.paving parking lots. | D.Throwing rubbish into lakes. |
A.water on the ground | B.water from a well(井) |
C.water from the deep earth | D.water from lakes or rivers |
A.All water shortages are because of human behavior. |
B.It takes a lot of efforts to meet our water needs. |
C.There is much we can do to reduce family size. |
D.The average family in America makes proper use of water. |
A.show us how to fix leaks at home |
B.tell us how to run a dishwasher |
C.prove what drinking glass is best for us |
D.suggest what we do to save water at home |
A.why paving roads reduces our water. |
B.how much we depend on water to live. |
C.why droughts occur more in dry climates. |
D.how human activity affects our water supply. |
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科目:高中英語 來源: 題型:閱讀理解
Our body clock,or natural body rhythm,influences our energy and alertness.Paying attention to it can help us choose the suitable time of day when we best perform specific tasks.
The reality,however,is that most of us organize their time around work demands,school deadlines,commuting or social events.Doing whatever your body feels like doing is a luxury in today's fast-paced modem society.
But that doesn't mean it isn't worth trying.Obeying our body clock has significant health benefits.Disrupting our natural body rhythm,on the other hand,has been linked to problems such as depression,obesity,or headache,says Steve Key,a biology professor.
When the body clock can synchronize(使……同步)the rhythms of its natural processes,it “gives us an advantage in daily life”,says Key.
According to him,when it comes to cognitive(認(rèn)知的)work,most adults perform best in the late morning.As our body temperature starts to rise just before awakening in the morning and continues to increase until midday,our memory,alertness and concentration gradually improve.
However,he adds,our ability to concentrate typically starts to decrease soon thereafter.Most of us are more easily distracted(分心)between noon and 4 pm.
Alertness also tends to fall after eating a meal and sleepiness tends to peak around 2 pm,making that a good time for a nap.
Surprisingly, tiredness may increase our creative powers.For most adults,problems that require open ended thinking are often best dealt with in the evening when they are tired, according to a study in the journal Thinking & Reasoning.
When choosing a time of day to exercise,paying attention to your body clock can improve results.Physical performance is usually best from about 3 to 6 pm,says Michael Smolensky,a professor of biomedical engineering.
Of course, not everyone's body clock is the same,making it even harder to synchronize natural rhythms with daily plans.
【小題1】If we know our natural body rhythm well, we can .
A.find out the suitable time to do specific tasks |
B.organize our time around work demands |
C.do whatever our body feels like doing |
D.be sure to be healthy |
A.Our alertness is influenced by our natural body rhythm |
B.Doing whatever your body feels like is very difficult in our modem society. |
C.Obeying our body clock is good for our health. |
D.Disrupting our natural body rhythm can lead to obesity. |
A.When our body clock synchronizes the rhythms of its natural processes,we can do better. |
B.When it comes to cognitive(認(rèn)知的)work,most people perform best in the late morning. |
C.As body temperature rises before awakening in the morning,our concentration gradually improves. |
D.We concentrate better in the late morning than between noon and 4 pm. |
A.when we get up in the morning |
B.when we are tired in the evening |
C.when we are full of energy in the late morning |
D.when we are asleep at night |
A.What is natural body rhythm? |
B.Natural body rhythm is good for us. |
C.Something about natural body rhythm. |
D.The latest research about natural body rhythm. |
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科目:高中英語 來源: 題型:閱讀理解
LONDON—Here’s a new warning from health experts:Sitting is deadly.
Scientists are increasingly warning that sitting for long periods—even if you also exercise regularly—could be bad for your health.And it doesn’t matter where the sitting takes place—at the office,at school,in the car or before a computer or TV—just the overall number of hours it occurs.Several studies suggest people who spend most of their days sitting are more likely to be fat,have a heart attack or even die.
In an editorial published this week in the British Journal of Sports Medicine,Elin EkblomBak of the Swedish School of Sport and Health Sciences suggested that authorities rethink how they define physical activity to highlight the dangers of sitting.
While health officials have issued guidelines recommending minimum amounts of physical activity,they haven’t suggested people try to limit how much time they spend in a seated position.
“After four hours of sitting,the body starts to send harmful signals,”said EkblomBak.She explained that genes regulating(調(diào)節(jié)) the amount of glucose(葡萄糖) and fat in the body start to shut down.
Even for people who exercise,spending long periods of time sitting at a desk is still harmful.Tim Armstrong,a physical activity expert at the World Health Organization,said people who exercise every day—but still spend a lot of time sitting—might get more benefit if that exercise was spread across the day,rather than in a single bout(一回).
Still,in a study published in 2009 that tracked more than 17,000 Canadians for about a dozen years,researchers found people who sat more had a higher death risk,whether or not they exercised.
“We don’t have enough evidence yet to say how much sitting is bad,” said Peter Katzmarzyk of the Pennington Biomedical Research Center in Baton Rouge,who led the Canadian study.“But it seems the more you can get up and interrupt this sedentary behavior,the better.”
Figures from a U.S. survey in 20032004 found Americans spend more than half their time sitting,from working at their desks to sitting in cars.
Experts said more research is needed to figure out just how much sitting is dangerous,and what might be possible to offset those effects.
“People should keep exercising because that has a lot of benefits,” EkblomBak said.“But when they’re in the office,they should try to interrupt sitting as often as possible,” she said.
【小題1】What is the best title for the text?
A.Not Sitting Too Much While Working |
B.How to Avoid Sitting Too Much |
C.Sitting Too Much Could Be Deadly |
D.More and More People Sit Too Much |
A.the more time you spend in exercising in a single bout(一回),the healthier you will be |
B.those who often sit too much are sure to grow fat or suffer from a heart attack |
C.regular exercise is effective to get rid of the side effects of sitting too much |
D.you had better not sit for more than four hours in a single bout |
A.It results in a higher death risk. |
B.It increases glucose and fat in the body. |
C.It makes a person unable to exercise long enough in a day. |
D.It causes the gene to fail to balance the glucose and fat in the body. |
A.improve | B.a(chǎn)void |
C.ignore | D.a(chǎn)chieve |
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