New Energy in the Twenty-first Century
Energy from the wind
Wind is a kind of clean energy, and there is lots of it, but, if there"s no wind, there is no wind energy.
Energy from the water
When water moves from a high place to a lower place, it can make electricity (电) without pollution.
However, people have to build dams (水坝) to use this energy, and building dams is very expensive.
Energy from the earth
There is heat in the rocks under the earth. Scientists use the heat to make geothermal (地热的) energy.
This kind of energy is cheap, but it is only possible in a few places in the world.
Energy from the sun
Solar panels (太阳电池板) on the roofs of houses can turn energy from the sun into electricity. Solar
power is clean and plentiful (丰富的), but when the weather is bad. It doesn"t work. |
New Energy in Twenty-first Century
| Advantages | Disadvantages | | Wind Energy | Clean.There is a lot. | It needs 1______. | | Water Energy | 2______ | It is expensive. | | Geothermal Energy | 3______ | only possible in a few places. | | Solar Energy | Clean and plentiful. | It depends too much on 4______. |
答案
| 1. wind 2. No pollution 3. Cheap 4. (fine) weather |
举一反三
| 在短文的空格内填入适当的词，使其内容通顺。 | At one time, making a film was an expensive activity only for a small group of people and film companies.
Not only were the tools and machines expensive but the cost of film was also far greater than most people
could afford. However, modem technology has (1)c______ all that.
New technology has really opened up the world of film-making for film fans. Now a camera does not
cost (2)m______ and most young people are certainly able to pay for it. So all you need is to get one for
yourself. With that, you may then start your own film-making.
However, film-making is (3)t______ work. You probably need many other people to help you. For example,
the (4)p______ of actors and actresses is very important in your film. Of course, these actors and actresses
may be your schoolmates, friends or family members. You don"t even need to pay them a cent while they are
glad to be part of your job.
(5)B______ , you need to make up a story. Can you write your own one? If you have good imagination,
you can create an attractive story (6)e______ . Many world-famous film makers and producers are also good
story-writers. If not, perhaps you need someone else to write it for you. An excellent story is the key to
making a (7)s______ film. | | 完形填空。 | Dictionaries are very useful books. People use dictionaries to 1 out the meaning of words. If you are
learning English, you would use an English dictionary. Some students have dictionaries. Their dictionaries
contain (包含) Chinese and English words. They are useful, but it is usually 2 to use a dictionary written
completely 3 English. This will help you to begin to think in English. A good English dictionary will show
you the correct spelling of a word and its 4 . Many dictionaries also show 5 a word is used in sentences. | ( )1. A. take
( )2. A. good
( )3. A. in
( )4. A. spelt
( )5. A. what | B. find
B. well
B. about
B. spell
B. why | C. hand
C. nice
C. with
C. pronounce
C. how | D. send
D. better
D. for
D. pronunciation
D. when | | 阅读理解。 | E-book is short for electronic (电子的) book. It is usually read on personal computers. Some mobile
phones can also be used to read e-books.
Earlier e-books were written for a specific group of readers and were about only a few subjects. With
the development of the internet, knowledge and answers to a lot of questions mainly come from e-books.
This is why the e-book business is increasing quickly.
E-books have many advantages. First, they save time. We don"t need to go to a bookstore to buy books,
besides, we can find the topic we want to know about on the Internet, and then we can quickly get many
e-books on similar topics. Second, e-books save money. Some e-books cost a little money, and there are
millions of e-books on the Internet that we can get for free. Third, more trees are saved because e-books
don"t need to be printed(印刷) on paper. Fourth, e-books make reading more convenient. You can carry a
whole library of hundreds of books with you in a small computer or any e-book reader (电子阅读器)
without worrying about their weight.
But e-books have certain disadvantages. They need a personal computer or an e-book reader and the
information can be lost if its file format (文件格式) is not supported or changed in the reader"s computer.
However, e-books provide us with a new way of reading. That is good. | | 1. Why is the e-book business increasing quickly? Because _____. | A. earlier e-books are about only a few subjects.
B. people don"t like to read any paper books any more.
C. most e-books have been written for a specific group of readers.
D. the development of the Internet makes e-books more useful. | | 2. How many advantages do e-books have according to this article? | A. Three
B. Four
C. Five
D. Six | | 3. Which of the following is true according to this article? | A. E-books can"t be red on mobile phones.
B. All the e-books on the Internet cost lots of money.
C. E-books can make reading more convenient.
D. You can"t read e-books without a personal computer. | | 4. What is the disadvantage of the e-books? | A. You"ll lose the information if its file format is not supported.
B. You can carry hundreds of books in an e-book reader.
C. You can buy cheap e-books anywhere.
D. You can read e-books at any time. | | 5. The author mainly tells us _____. | A. you don"t need to buy paper books in a bookstore if you read e-books.
B. the information can be lost if its file format is changed.
C. the development of e-books can help save the environment. | | 在短文的空格内填入适当的词，使其内容通顺，每空格限填一词，词首字母已给。 | Teenagers are always stressed out now. They are often too busy to think about their diets and exercise.
The truth is, healthy eating, along with regular exercise. Is the only way to k 1 fit. During your teenage
years, it is important to give your body the energy it needs. Teenager girls need about 2,200 calories (卡路
里) a day and boys need a bit more. Doctors suggest 2,800 calories for teenage boys. 50% of your calories
should come f 2 rice, bread, vegetables and fruit. You also need to d 3 a lot of water, six to eight glasses
a day. Enough water will improve your skin and give you healthy hair.
Exercise can help to make you look good, feel good and be healthy. Scientists suggest that teenagers
should spend at l 4 30 minutes exercising every day.
When you exercise, your body produces something. It makes you feel r 5 and energetic. It can even
help you sleep better at night and let you pay more a 88 when you study. Let"s eat healthily and take regular
exercise. | | 1. k_______ 2. f _______ 3. d _______ 4. l _______ 5. r _______ 6. a _______ | | 阅读理解。 | It"s important to prepare(准备) for earthquakes because you don"t know where you will be when an
earthquake happens. Earthquakes may happen at any time, so prepare some things for your home, office
and car.
1. Clothes.
If you live in a cold place, you must keep warm. You might not have heat after an earthquake. Think
about your warm clothes.
2. Flashlights (手电筒) and spare batteries.
Keep a flashlight beside you bed, at your office and in your car. Do not use matches (火柴) after an
earthquake until you are sure that no gas leaks (气体泄漏).
Prepare a radio and some spare batteries. Most telephones will be out of order, so radios will be your
best source of information (信息来源).
3. Food and medicine.
It"s always a wonderful idea to keep some food on hand. For example, some biscuits, some canned
food, milk and some other drinks for at least 72 hours. You"d better get some necessary medicine for
your family.
4. Water.
A person needs at least 1/2 gallon (加仑) of water daily just for drinking. Store at least 1 gallon of
water for a person every day and be prepared for 72 hours. It is suggested that you buy bottled water.
Do not open the bottle until you need it. Also, do check the "use by" date. | | 1. Why should people prepare themselves for an earthquake? | A. Because earthquakes can be know before they happen.
B. Because earthquakes usually take place in the neighborhood.
C. Because we don"t know when and where an earthquake will happen. | | 2. If you live in a cold place, you should prepare _____. | A. some hot water
B. some warm clothes
C. some batteries | | 3. According to the article we know that _____. | A. we need to prepare some things only at home
B. a telephone is the most important source of information
C. flashlights but not matches are first used after earthquakes | | 4. You should prepare all of the following except _____. | A. milk
B. fresh vegetables
C. biscuits | | 5. About the water, which description is RIGHT? | A. A person should drink at least 1 gallon of water in a day.
B. You shouldn"t open the bottled water until you need it.
C. You"d better keep some hot water for 72 hours. | 最新试题
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