题目
题型:不详难度:来源:
The ocean can be a great place to swim and play, it may also be useful in another way. Some scientists think that waves could help make electricity.
“Have you ever been on a surfboard or boat and felt yourself being lifted up by a wave?” asked Jamie Taylor of the Wave Energy Group in Scotland. “There is certainly a lot of energy in waves.”
Scientists are working on using that energy to make electricity. The United States and a few other countries have started doing research on wave energy, and it is already being used in Scotland.
Most waves are created when winds blow across the ocean. “The winds start out by making little ripples (波纹) in the water, but if they keep on blowing, those ripples get bigger and bigger and turn into waves,” Taylor said. “Waves are one of nature’s ways of picking up energy and then sending it off on a journey.”
When waves come towards the coast, people can set up dams(大坝) to block the water and send it through a large wheel called a turbine(涡轮). The turbine can then power an electrical generator(发电机).
We will never run out of wave power. Besides, wave energy does not create the same pollution as oil and coal do.
Oceans cover three quarters of the earth’s surface. That would make wave power seem perfect for creating energy around the world. But there are some disadvantages that need us to pay more attention to.
Jamie Taylor said that wave power still cost too much money. He said that its influence on animals in the sea is still unknown. Besides, wave power would get in the way of fishing and boat traffic.
With more research, “Many of these problems might be solved,” Taylor said. “Finding more energy sources(资源) is very important, for traditional sources of energy like oil and gas may run out some day.”
In the future, when you turn on a light button, an ocean wave could be providing the electricity!
![](http://img.shitiku.com.cn/uploads/allimg/20200119/20200119160320-22228.jpg)
小题1:We can learn from the passage that__________________.
A.almost every country is making use of the wave power at present |
B.it is necessary for us to develop wave power instead of oil and coal |
C.wave power will be sure to make some bad influence on sea animals |
D.scientists are making efforts to find new ways of fishing and boat traffic |
A.Why scientists are doing the research on wave power. |
B.What experience that scientists have achieved so far. |
C.How the wave energy forms and grows bigger. |
D.Which countries are trying out wave power. |
A.The writer believes that wave power will be used widely by man. |
B.The writer doubts if wave energy can be changed into electricity. |
C.The writer is sure the experiments will come to the end some day. |
D.The writer thinks that wave power isn’t worth researching at all. |
A.Sea Animals and Wave Power. |
B.How Do We Get Wave Energy? |
C.The Advantages of Wave Power. |
D.Can Waves Make Electricity? |
答案
小题1:B
小题2:C
小题3:A
小题4:D
解析
小题1:细节理解题,由文中语句“Scientists are working on using that energy to make electricity. The United States and a few other countries have started doing research on wave energy, and it is already being used in Scotland.”可知。
小题2:理解归纳题,由文中语句“The winds start out by making little ripples (波纹) in the water, but if they keep on blowing, those ripples get bigger and bigger and turn into wave s”可知。
小题3:细节理解题,由文中语句“Oceans cover three quarters of the earth’s surface. That would make wave power seem perfect for creating energy around the world.”可知。
小题4:标题归纳题,纵观全文理解可知。
核心考点
试题【The ocean can be a great place to swim and play, it may also be useful in anothe】;主要考察你对科普环保类等知识点的理解。[详细]
举一反三
Even though global warming may have made the weather more mild, many animals are still hibernating(冬眠). It’s too bad that humans can’t hibernate. In fact we almost did.
Apparently, at times in the past, farmers in France liked a semi-state of human hibernation. So writes Graham Robb, a British scholar who has studied the sleeping habits of the French farmers. As soon as the weather turned cold, people all over the France shut themselves away and practiced the forgotten art of doing nothing at all for months.
In line with this, Jeff Warren, a producer at CBC Radio’s The Current, tells us that the way we sleep has changed since the invention of lighting.
When historians began studying texts of the Middle Ages, they noticed something referred to as “first sleep”, which was not clarified, though. Now scientists are telling us our ancestors most likely slept in separate periods. The business of eight hours’ continuous sleep is a modern invention.
In the past, without the artificial light, humans went to sleep when it became dark and then woke themselves up around midnight. The late night period was known as “The Watch”. It was when people actually kept watch against wild animals, although many of them simply moved around or visited family and neighbors.
According to some sleep researchers, a short of insomnia(失眠)at midnight is not a disorder. It is normal. Humans can experience another state of consciousness(清醒状态)around their sleeping, which happens in the brief period before we fall asleep or wake ourselves in the morning. This period can be a creative time for some people.
Playing with your sleep rhythms(节奏)can be dangerous, as worry may set in. Medical science doesn’t help much in this case. It offers us medicines for a full night’s continuous sleep, which sounds natural; however, according to Warren’s theory, it is really the opposite of what we need.
小题1:The late night was called “The Watch” because it was a time for people ______.
A.to set time to catch animals |
B.to remind others of the time |
C.to guard against possible dangers |
D.to wake up their family and neighbors |
A.sleep in the way animals do |
B.follow their natural sleep rhythms |
C.keep to the eight-hour sleeping way |
D.ask doctors for help if they can’t sleep |
A.To throw new light on human sleep. |
B.To encourage people to sleep less. |
C.To give some suggestions on insomnia. |
D.To find out people’s hibernating history. |
Early to bed and early to rise makes a man healthy, wealthy and wise.
This is an old English saying. It means that we should go to bed early at night and get up early in the morning. If we do, we shall be healthy. We shall also be rich and clever.
Is this true? Perhaps it is. The body must have enough sleep. Children of your age need ten hours’ sleep every night. If you do not go to bed early, you can not have enough sleep. Then you can not think properly and you can not do your work properly. You will not be wise and you may not become wealthy!
Some people go to bed late at night and get up late in the morning. This is not good for them. We should sleep at night when it is dark. The dark helps us to sleep well. When the daylight comes, we should get up. This is the time for exercise. If the body is not used, it will become weak. Exercise keeps it strong.
Exercise helps the blood to move around inside the body. This is very important. Blood takes nutrition (营养) to all parts of our bodies. The brains in our heads also need blood. We think with our brains. If we keep our bodies healthy, and take exercise, we can think better!
Our bodies also need air to breathe. Without air we will die. Get up early in the morning and we can have plenty of clean, fresh air. That will keep us healthy and happy.
小题1:The old English saying“Early to bed and early to rise makes a man healthy, wealthy and wise.”mainly shows _______.
A.what good habits are |
B.what bad habits are |
C.how to become healthy, rich and clever |
D.it’s easy for people to get up and go to bed early |
A.may not be strong |
B.may not become wealthy |
C.can not think and do their work properly |
D.will not get up early |
A.correctly | B.carefully | C.quickly | D.easily |
A.fresh air | B.enough sleep | C.good habits | D.exercise |
A.old people | B.middle-aged people |
C.weak people | D.children |
Cough Medicine: The medicine is for a person with a cough. Shake it well before use. Take it three times each day before meals or before sleep. Dose (药量): Age: over 14 2 teaspoonfuls 8~13 1 teaspoonful 4~7 1/2 teaspoonful Dot fit for children below the age of three or old persons with heart trouble. Put it in a cold place. Use it before December 1st, 2004. |
A.2 teaspoonfuls | B.3 teaspoonfuls | C.4 teaspoonfuls | D.1 teaspoonful |
A.shake the medicine well | B.eat nothing | C.do some exercises | D.drink a cup of tea |
A.eighty | B.thirty | C.two | D.twelve |
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Have you ever stayed in a hotel? Most Chinese hotel often provide guests with things like disposable(一次性的)toothbrushes, toothpaste, shampoo and slippers. Many guests like the idea because they don’t have to bring their own. But ,if you travel to Beijing, remember to bring your own things. Starting from June, some hotels in Beijing will no longer provide guests with these disposables. They want to ask people to use fewer disposable things.
Many disposable things are made of plastic. People throw them away after only using them once. It is a waste of natural resources(资源)and is very bad for the environment. Do you know that one Chinese person makes as much as as 400kg of waste a year? Most of that waste comes from disposable things. In Beijing, people throw away about 19,000 tons of plastic bags and 1,320 tons of plastic lunch bowls every year! Plastic can take between 100 and 400 years to bread down. So wherever you travel, bring your own things and use them again and again.
Back at home and school, you can also do something to make our world a better place. Try to do these things in your daily life: use cloth shopping bags, not plastic ones. After using a plastic bag, wash it out and let it dry. Then you can use it over and over again. Do not use paper cups. At your school canteen(食堂). use your own bowl and chopsticks instead of(代替) disposable ones.
小题1:Which of the following may still be provided(被提供) in Beijing hotels after June?
A.toothbrushes | B.tea cups | C.shampoo | D.paper slippers. |
A.To let their guests take fewer things while travelling. |
B.To hope their guests use fewer disposable things. |
C.To wish their guests to save money. |
D.To want their guests to use more disposable things. |
A.Many disposable things are made of plastic. |
B.Throwing disposable things away is a waste of natural resources. |
C.Plastic is very bad for the environment. |
D.Plastic breaks down easily. |
A.Using shopping bags made of plastic. |
B.Using paper cups instead of plastic ones. |
C.Using disposable plates, bowls and chopsticks. |
D.Using everything over and over again. |
A.People don’t like disposable things at all. |
B.We can’t use paper or plastic bowls at school. |
C.We should use fewer plastic things and protect our environment. |
D.Hotels won’t provide disposable things to save money. |
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