科普环保类 知识点题库

Here's an interview to a pilot about his life.
(R="Reporter;" P= Pilot)
R: How much time do pilots actually spend flying a plane?
P: It varies (WES'J) from about 20 minutes on some domestic (区别) flights to as much as 18 hours on international flights. It all depends on if the flight is a short- or long-haul flight.
R: Do pilots take breaks during flights or do they fly the whole time?
P: Yes, we take breaks during long-haul flights. Airlines assign (指派) three or four pilots to long flights. We take turns flying the plane.
R: If pilots are traveling all the time, how do they deal with jet lag (时差)?
P: Jet lag is annoying for almost all pilots. I try to go to sleep as I would at home.
R: How important is it to know the weight and size of the plane you are flying?
P: It is very important. We weigh almost everything put into the airplane and make estimates (估计) according to the number of people on each flight.
R: Do pilots eat the airplane food?
P: Yes, we eat business class food! Airplane food changes every season and is very delicious if you don't hate eating lobster (龙虾) every day! The pilots on the same plane are supposed to make different meal choices so that if one of the dishes causes food poisoning, only one of them will be sick. That way, at least one pilot will always be well enough to fly the plane!

    Most people around the world are right-handed. This also seems to be true in history. In 1799, scientists studied works(作品) of art made at different times from 1, 500 B. C. to the 1950s. Most of the people shown in these works are right-handed, so the scientists guessed that right-handedness has always been common through history. Today, only about 10% to 15% of the world's population is left-handed.
    Why are there more right-handed people than left-handed ones? Scientists now know that a person's two hands each have their own jobs. For most people, the left hand is used to find things or hold things. The right hand is used to work with things. This is because of the different work of the two sides of the brain (大脑). The right side of the brain, which makes a person's hands and eyes work together, controls(控制) the left hand. The left-side of the brain, which controls the right hand, is the centre for thinking and doing problems. These findings show that more artists should be left-handed, and studies have found that left-handedness is twice as common among artists than among people in other jobs.
    No one really knows what makes a person become right-handed instead of left-handed. Scientists have found that almost 40% of the people become left-handed because their main brain is damaged(损害) when they are born. However, this doesn't happen to everyone, so scientists guess there must be another reason (原因) why people become left-handed. One idea is that people usually get right-handed from their parents. If a person does not receive the gene (基因) for right-handedness, he/she may become either right-or left-handed according to the chance (偶然性) and the people they work or live with.
    Though right-handedness is more common than left-handedness, people no longer think left-handed people are strange or unusual. A long time ago, left-handed children were made to use their right hands like other children, but today they don't have to.

   The earth moves round the sun, and the moon moves round the earth. When our part of the earth turns to the moon, it is night.
The sun is much bigger than the moon. But sometimes the moon looks bigger than the sun, because it's much nearer to the earth.
The sun is very bright. It gives a very strong light. The moon looks quite bright,  too. But it doesn't give any light at all.
   The moon looks much bigger and brighter than the stars. But actually the stars are much bigger and brighter than the moon. They look smaller than the moon because they're much farther away from us.

Earthquakes happen without warning（前兆）．They can happen any time of a day，at any point during the year．When an earthquake is happening， you should know what you should do or not do．
Do NOT go outside．You could get injured from falling glass or parts of buildings．If you are outside，stay away from buildings and power lines（输电线）．
Stay under a desk，table，or other strong furniture．Hold on to it．Or stay in a corner of the building．Cover your face and head with your arms and cover your mouth with a towel or clothing．Stay inside until shaking stops and it is safe to go outside．
Keep away from windows，pictures or advertisements on the wall or the building，and anything else that could fall and hurt you．Most people get injured by falling things during an earthquake，not by the shaking itself．
Also keep away from a fire．You could fall down and burn yourself on the fire．
If you are driving when an earthquake happens，stop the car if it's safe．Stay inside your car until the earthquake stops，and don’t drive near bridges．Try not to stop by power lines or trees．These could fall and hurt you．

根据短文内容选择正确答案。

    Earth Day is on April 22^nd. People say thanks to the Earth and learn ways to keep the Earth safe and clean. But saying the Earth is not just for grow-ups. Kids are also taking an active part in it.

    The American writer and filmmaker Lynne made a film called Young Voices for the Planet. It lists a lot of stories about different kids who help to keep our environment clean.

Team Marine, US

A group of students an Santa Monica High School started an organization called Team Marine. They tell people why plastic bags are bad for sea animals and environment. In 2011, they successfully made lawmakers(立法者) in their city stop people using plastic bags.

Felix, 15 Germany 

   In 2007, a 9-year-old boy, Felix, started a club. Plant for the Planet. It encourages children around the world to plant trees in their own countries. Felix helped plant 25 million trees in Germany and 120 million trees worldwide.

Alec, 17, US 

    When he was 12, Alec set up Kids VS Global(全球的) Warming. It teaches kid about weather change and ways to stop the world getting warmer and warmer. Alec travels widely to encourage people to help stop global warming. He has given more than 70 talks across the country.   

Olivia, 13, US 

    When Olivia was 11, she heard about the 2010 oil spill(漏油) in gulf of Mexico. She painted 500 pictures of birds to raise money for the clean-up. She raised more than $200,000 to protect(保护) birds and other wild animals.

阅读下列短文，从下面每小题的A.B.C .D四个选项中选出最佳选项。

   As parents, you can help children deal with the fear of natural disasters (自然灾害) and help protect them from being hurt by telling them how disasters happen, and what to do when disasters happen. Here are some tips for you:

◆ Find out what disasters are possible in your area by visiting your local library;

◆ Think about where your family should go if your house is destroyed（毁坏）.

◆ Teach children the warning signs and signals in your area and practice what to do if a disaster happens.

◆ Once you know the danger, ask your children to help check the safety in your house. You and your children can also work together on a disaster plan and prepare a disaster box with food, water and necessary tools.

◆ If a disaster does happen, pay attention to your children's behavior. Changes in behavior, for example, acting strangely, mean that your children need help.

◆ Allow children to share their feelings about what has happened such as drawing a picture or writing a story.  

◆ Let friends and neighbors help you if they can.

◆ Continue to tell your children that they are loved.

根据短文理解，选择正确答案。

    The earth moves round the sun, and the moon goes round the earth. When our part（部分） of the earth turns to the sun, it is day, When our part of the earth turns away from the sun, it is night. The sun is much bigger than the moon. But sometimes the moon looks bigger than the sun, because it's much nearer to the earth. The sun is very bright. It gives a very strong light. The moon looks quite bright, too. But it doesn't give any light at all. The moon looks much bigger and brighter than the stars .But actually（事实上）, the stars are much bigger and brighter than the moon. They look smaller than the moon because they're much farther away from us.

阅读理解

    The human brain is divided into two sides, or hemispheres, called the right brain and the left brain. The two hemispheres work together, but each one specializes in certain ways of thinking.

    Each side has its own way of using information to help us think, understand, and process informa—tion.The left side of the brain controls language. It is more verbal and logical. It names things and puts them into groups. It uses rules and likes ideas to be clear, logical, and orderly. It is best at speech, reading, writing, and math. You use this side of the brain when you memorize spelling and grammar rules or when you do a math problem.

    The right side of the brain is more visual and creative. It specializes in using information it receives from the senses of sight, sound, smell, touch, and taste. This side of the brain likes to dream and experiment. It controls your appreciation of music, color, and art. You use this side when you draw a picture or listen to music.Although we all use both sides of our brains, one side is usually stronger or dominant. Some people are more “left—brained,” and others are more “right—brained”. Our dominant side influ—ences the kinds of jobs and hobbies we have. Politicians, artists, architects, and musicians depend on their right brains. Accountants, engineers, doctors, and lawyers usually rely on their left brains.

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    We know the mosquito very well. Mosquitoes fly everywhere. They can be found almost all over the world， and there are more than 2，500 kinds of them.

    No one likes the mosquito. But the mosquito may decide that she loves you. She？ Yes，she. It's true that male mosquito doesn't bite（咬） and only the female mosquito bites because she needs blood to lay eggs. She is always looking for things or people she wants to bite. If she likes what she finds， she bites. But if she doesn't like your blood，she will turn to someone else for more delicious blood. Next time a mosquito bites you，just remember you are chosen. You're different from the others！

    If the mosquito likes you，she lands on your body without letting you know. She bites you so quickly and quietly that you may not feel anything different. After she bites，you will have an itch（痒） on your body because she puts something from her mouth together with your blood. By the time the itching begins，and she has flown away.

    And then what happens？ Well，after her delicious dinner，the mosquito feels tired. She just wants to find a place to have a good rest. There，on a leaf or a wall， she begins to lay eggs，hundreds of eggs.

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    All living things on the earth need other living things to live. Nothing lives alone. Most animals must live in a group, and even a plant grows close together with others of the same kind. Sometimes one living thing kills another, one eats and the other is eaten. Each kind of life eats another kind of life in order to live, and together they form a food chain (食物链). Some food chains are simple, while others are not. But all food chains begin with the sun, and all food chains become broken up if one of the links (联系) disappears.

    All life needs sunlight to live on. But only plants can use sunlight directly (直接). Plants are “factories”. They make food from sunlight, water and things in the soil (土壤) and air.

    Plants feed all other living things. Animals can only use the sun's energy (能量) after it has been changed into food by plants. Some animals feed directly on plants, others eat smaller animals. Meat-eating animals are only eating plants indirectly.

    What about human beings? We are members of many food chains. We eat wheat (小麦), rice, vegetables, fruits and so on. We also eat meat and drink milk. But humans often break up the food chains. They kill wild animals. They also make rivers, lakes and seas dirty. When these rivers, lakes and seas are polluted, the fish in them cannot be eaten. If men eat the fish, they will get strange diseases (疾病).

    Each form of life is linked to all others. Breaking the links puts all life in danger.

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    Bananas are the perfect snack. Not only are they sweet and delicious, but they are easy to carry around, so you can take them anywhere. Best of all, bananas provide different things that the human body needs!

    Bananas grow best in warm places that get lots of rain. They grow on plants that look like trees.

    The banana plant, however, is considered a herb rather than a tree because it doesn't have a strong, woody stem(茎，干). The plants can grow as high as 30 feet. When they reach their full height, flowers grow out from the stem. These flowers produce bananas.

    Two or three times each year, the plants produce fruit. The bananas grow together, which seem like "hands". A hand is made up of 10 to 20 bananas. Growers sometimes call bananas "fingers".

    Each bunch(丛) of bananas has about 15 hands, and so a whole bunch may have as many as 200 bananas and can weigh more than 100 pounds.

    After about three months, the bananas are ready to be picked. At this point, they still aren't the sunny yellow color of bananas. Farmers pick them when they're green. That's how they're shipped to stores. They turn yellow along the way and are ready to be sold.

    If you love bananas, you've got a lot of company. Americans have been enjoying bananas since the first shipment arrived in the United States in 1876. Today, American eat more bananas than any other fruit. More bananas are sold than apples and grapes together. Every American eats over 26 pounds of bananas each year!

阅读短文，选择正确的选项。

Computer

    There are all kinds of machines. They are used in many different ways. One kind of machines is called computer. A computer can do many things. A computer can do maths problems. People can do maths problems,too. But they can't do it as fast as a computer. Computers remember things. Computers remember everything people tell them. People can not remember as many things as computers. Computers help to tell what the weather will be like. Computers help to fly rockets and spaceships.

    There are a lot of ways computers are used. They are used in thousands of ways. But they are not alwaysused in the same way. Some computers do just a few things. Some computers can do a lot of things. There are huge (巨大的) computers. There are small computers, too. There may be computers in your school. Do you know what they do?

阅读理解

    You probably know a typhoon is a large and powerful storm that can cause a lot of rain and wind. Everyone pays attention to typhoons because they can be dangerous. Some typhoons come and go and really don't cause much more trouble than a bad thunderstorm. Others may damage homes and cause some floods that go away on their own.

    Typhoons are always a concern, especially for people who live near the coast. When a typhoon is on the way, weather forecasters can say which areas will be affected. Maybe you've heard people call a typhoon a "natural disaster", but what does that mean? A natural disaster is something that happens in nature and causes big problems, like a typhoon, a tornado(龙卷), an earthquake, or a tsunami. But wherever you live, it's important to remember that there are lots of people looking out for you. In a bad storm or other crisis, this would include not only mums and dads, but also police officers, firefighters, doctors, nurses, and other people who are trained to handle emergencies.

阅读下列短文，从每题A、B、C、D四个选项中，选出一个能回答所提问题或完成所给句子的最佳答案。

    Do animals have a culture? What do we mean by "culture?" Lately social scientists have begun to ask if culture is found just in humans, or if some animals have a culture too. When we speak of culture, we mean a way of life a group of people have in common. Culture includes the beliefs and attitudes we learn. It is the patterns of behavior that help people to live together. It is also the patterns of behavior that make one group of people different from another group.

    Our culture lets us make up for having lost out strength, claws, long teeth, and other defenses. Instead we use tools, cooperate with one another, and communicate with language. But these aspects of human behavior, or "culture," can also be found in the lives of certain animals. Animals can make tools, for example. We used to think that the ability to use tools was the dividing line between human beings and other animals. Lately, however, we have found that this is not the case. Chimpanzees(非洲小猩猩) can not only use tools but actually make tools themselves. Animals can also share knowledge with each other and use their own language to communicate. So it may be important for us to know that the line dividing us from animals is not as clear as we used to think.

阅读下列短文，从每题A、B、C、D四个选项中，选出一个能回答所提问题或完成所给句子的最佳答案。

    In earliest times, men considered lightning to be one of the great mysteries (神秘的事物) of nature. Some ancient peoples believed that lightning and thunder were the weapons (武器) of the gods.

    In reality, lightning is a flow of electricity formed high above the earth. A single flash of lightning 1.6 kilometres long has enough electricity to light one million light bulbs (灯泡).

    The American scientist and statesman, Benjamin Franklin, was the first to show the connection between electricity and lightning in 1752. In the same year he also built the first lightning rod (避雷针). This device (装置物) protects buildings from being damaged by lightning.

    Modern science has discovered that one stroke (闪击) of lightning has a voltage (电压) of more than 15 million volts (伏特). A flash of lightning between a cloud and the earth may be as long as 13 kilometers, and travel at a speed of 30 million meters per second.

    Scientists judge that there are about 2,000 million flashes of lightning per year. Lightning hits the Empire State Building in New York City 30 to 48 times a year. In the United States alone it kills an average (平均数) of one person every day.

    The safest place to be in case of an electrical storm is in a closed car. Outside, one should go to low ground and not get under trees. Also, one should stay out of water and away from metal fences. Inside a house, people should avoid open doorways and windows and not touch wires or metal things.

    With lightning, it is better to be safe than sorry?

阅读理解

    Technology is everywhere. In fact, almost all of us carry a certain piece of technology with us every time we leave the house. What I always forget, though, is just how useful and powerful technology can be when we want to help others.

    There is not a single room in my house that does not have some electronic devices(设备).Whenever I am at home, I am almost always using at least one electronic device. If you walk into my living room on any given day, you will find that, first, I have the television on. At the same time, I usually have my laptop resting on my knee, or I am using my mobile phone. Even when I'm not at home, I am always using my phone, and at work or in cafes, I sit down and connect to the local wireless network on my laptop.

    I must say that I waste a lot of time on the computer and the time I spend on it could be much better spent if I were to take up a little online volunteering.

    Recently I discovered just how much online volunteering there is to do in the world. From using your language skills to do translations, to developing and managing projects and helping with IT work, there is so much that so many people can do to help people in their own countries and across the world. The United Nations, in fact, has a huge page with "Volunteers Recruited" on its website.

    This work can support the poor and help charities who cannot pay for staff members. Many organizations only require you to work an hour a week, some even less. And the support provided by online volunteers can really help make a difference to those in need.

阅读理解

    How would we travel without maps? It would be a bit adventurous (冒险的) to set off from Oxford University to go to London Bridge if there was not a map of the London Underground at each station. In fact, a lot of the early map—makers were explorers (探险家), especially in the 15th and 16th centuries.

    So what did people do before there were maps? Well, it was quite easy to use natural signs like mountains and rivers if you were travelling on foot or riding a horse. People took small boats down rivers and followed coastlines (海岸线). And people world use time, not distance (距离), to measure(测量)the way they went; the next village was a three—hour ride, for example.

    In fact, in the early maps, people did not draw marks. They drew stars. It was very easy to the night sky and use it for navigation (航行). The sky was a lot clearer before the light pollution from cities appeared. When towns and cities were built, people drew road maps which gave distances and directions.

    The London Underground was opened in 1863 and it also used a road map style. But a man called Henry Beck realized that travelling by train was not the same as driving your car across London. Passengers only needed to know which stations to change. His new design for the Underground map was not very popular with the train companies at first. But the passengers loved it and 700,000 copies were printed in 1933.

    These days, of course, you can ride a bike, drive a car or go through a forest and know where you are exactly with a GPS. It's really difficult to get lost!

根据语言材料内容选择最佳答案。

A If we laid all of the blood vessels (血管) in the human body end to end, they would reach about 100,000 km long. That's nearly two and a half times around Earth!	B For the first time, CocaCola has showed that it uses 3,000,000 tons of plastic bottles each year. That's the weight of 15,000 blue whales the largest animal on Earth!	C If your throat tickles (发痒), pressing your ear might make it go away. That's because-your throat and ears share the same group of nerves (神经). When you press your ear, the nerves in your throat can feel it.
D It takes about 7 to 8 trees to make enough O2 for one person to breathe for a year. Each person needs around 750 kg of O2 every year. A large tree might make around 100 kg of O2 every year.	E To young children, a year might seem to last forever. But older people might say that it flies by. Why is that? According to the US scientists, young people's brains deal with information faster than older people. They take in more information and do more things in a day. So they feel like each day lasts longer. However, older people's brains take in less information and see a day, pass more quickly.	F About 200 muscles (肌肉) work together when you take a step. That's a lot of work for your muscles, since many people take, about 10,000 steps a day. If you want to get some easy exercise, walking is good for you.

阅读下面材料，从每题所给的A、B、C、D四个选项中选出最佳选项。

 

阅读理解

    In today's world, almost everyone knows that air pollution and water pollution are harmful to people. However, not all people know that noise is also a kind of pollution and it is harmful to human beings too.

    People who work and live under noisy conditions easily become deaf. Scientists believe that 10 percent of the workers in Britain are being deafened (变聋) by the noise where they work. Many of the workers who print newspapers and books, and who weave (织) cloth become deaf. Quite a few people living near airports also become deaf, Recently it was discovered that many teenagers in America could hear mo better than 65 year old people. for these young people like to listen to pop music and most of the pop music is a kind of noise.

    Nowadays the governments in many countries have made laws to reduce or control noise and to make it less than 85 decibels (分贝). In China, the government is trying to solve not only air and water pollution problems but also the noise pollution problem.