阅读理解。 Fire can help people in many ways. But it can also be very harmful. F

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阅读理解。     Fire can help people in many ways.  But it can also be very harmful. Fire can heat water, warm
your houses, give light, and cook food.  But fire can burn things, too. It can burn trees, .houses, animals,
or people.  Sometimes big fires can burn forests.
     Nobody knows for sure how people began to use fire. But there are many interesting, old stories
about the first time a man or woman started a fire. One story from Australia tells about a man a very,
very long time ago. He went up to the sun by a rope and brought fire down.
     Today people know how to make a fire with matches.  Children sometimes like to play with them.
But matches can be very dangerous. One match can burn a piece of paper, and then it might burn a
house. A small fire can become a big fire very fast.
     Fires kill many people every year. So you must be careful with matches. You should also learn to put
out fires. Fires need oxygen. Without oxygen they"ll die. There is oxygen in the air. Cover a fire with
water, sand, or in an emergency, with your coat or something else. This keeps the air away from a fire
and kills it.
     Be careful with fire, and it will help you.  Be careless with fire, and  it will burn you. 1.Which of the following is true?                   A. We are not sure how people started to use fire.
B.  It is an Australian who started a fire.
C.  We know how people began to use fire.
D.  Nobody knows how to make a fire. 2. Children mustn"t play with matches because  ______.                   A.  matches bum paper
B.  it is not interesting
C.  matches can be dangerous
D.  they don"t know how to make a fire with matches 3. If you are going to put out a fire, you ______.                A.  must be careful with matches
B.  ought to know it can be harmful
C.  have to cover it with water only
D.  should keep air away from it 4. We must be careful with fire, or it ______.              A.  can die
B.  warms our houses
C.  might burn us
D.  will help us

答案

1-4 ACDC

举一反三

阅读理解。     Solar energy (power from the sun) is of many uses. In many parts of the world, people are building
solar houses with large numbers of windows to collect the heat of the sun. Solar collectors can make hot
water from sunlight. The rays of the sun heat water in a solar collector, and  the hot water goes into a
storage tank  (蓄水箱). People can use the hot  water for washing or for heating their houses.  In the
future, people may use the rays of the sun to make electricity for their homes. They will use photovoltaic
cells to make electricity from sunlight.
     The sun is an important "new" source of energy. It is less expensive than oil or nuclear energy.
Furthermore, it does not cause pollution, and  it is not as dangerous as nuclear power. Many people
think that solar energy will be the answer to our future energy problems. 1. What is the source of solar energy?               A. The earth.
B. Oil.
C. The sun.
D. Nuclear energy. 2. A solar collector can  ______.                 A. answer our future energy problems
B. make electricity from sunlight
C. use hot water for washing
D. make hot water from sunlight 3. Solar energy may solve ______.              A. water shortages
B. storage problems
C. future energy problems
D. future water problems 4. People may use the hot water from a solar collector ______.              A. for nuclear power
B. for washing and heating
C. to cause pollution
D. to change sunlight into electricity

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阅读理解。     One of nature"s most remarkable effects is the mirage.  Mirrages occur when there is a great
difference in temperature between one layer of air in the atmosphere and the next.
     On a hot day, light rays from the sky. hit the unusually hot air just above pavement or sand.
These rays bend and then continue horizontally along the line of vision, giving the illusion that a body
of water lies ahead.
     Sometimes sailors in northern seas observe ships or icebergs seemingly hanging upside down in
the sky. In this case, the warmer air lies above cooler, denser air. The warm air above reflects the
image of the distant ship or iceberg, even when the same object is not seen directly because of
atmospheric density.
     Between the coast of Italy and the island of Sicily lies the Strait of Messina.
    For centuries sailors have seen there the mirage of a whole city; this mirage is known as the fatal
marriage (命运注定的婚姻).
     Scientists believe that some of the flying saucers that have been reported in many parts of the
United States were actually mirages.  When light rays are reflected at night by the warm air above
the earth, the mirage of a lighted object appears in the sky. 1. The body of water seen ahead while driving on a hot day is a ______.                  A. body of water
B. reflection of light rays from the sky
C. reflection of a body of water
D. reflection of sand 2. Sailors in northern seas have observed mirages of  ______.                 A. bodies of water
B. flying saucers
C. ships or icebergs ahead
D. ships or icebergs upside down in the sky 3. Scientists believe that mirages can give a reason for ______.                 A. none of the flying saucer reports
B. some of the flying saucer reports
C. most of the flying saucer reports
D. all of the flying saucer reports

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阅读下面短文，根据短文内容及首字母提示补全文中所缺的单词。     Years ago ,if a teenager had some problems in his life,he might write them in his diary (日记). Now a
teenager (1)w____   the same problems might get on the Internet and write them in his blog(博客). In
many ways, a diary and a blog are almost the same. So, what makes a blog (2)d____  from a diary?
     The biggest difference is that a blog is much more public(公共的)  (3)t____  a diary. Usually,a
teenager likes hiding his diary book and treats it as one full of (4)s____  .Both diaries and blogs tell what
happened to the writer that day.
     A blog has both good and bad points(特点). The biggest problem is that anyone can read what you
write in your blog. If you are not satistied(满意的)with a friend during school and write something bad
about him in your diary , he will never know it. (5)H____  , if you do this on the Internet, that friend may
read your blog and get (6)a____ . So we have to be careful of what we write.
     A blog has good points, of course. People choose to write in blogs,they know that their friends will
read what they write. If you are  (7)f____ sad one day and write in your diary, no one will know about it.
If you write the same words in your blog, your friends may quickly (8)w____ back to comfort you or offer their help. Blogs help people stay in close contact(联系)and let them know what their friends are doing.
     T(9)____ it"s a good way to write blogs about everyday life，I still (10)p____ my old diary.1.________  2.________  3.________ 4.________ 5.  ________
6.________ 7. ________ 8.________ 9.________ 10. ________

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阅读理解。      Can plants eat people? Probably not, but there are many plants that eat meat. Some of them are
big.  And they can eat small animals. One famous meat-eating plant is the Venus flytrap  (捕蝇草).
     The Venus flytrap is a very strange plant.  It grows in dry parts of the United States. Its leaves are
like the pages of a book. They can open and close very quickly. Inside the leaves, there are three small
hairs.  If a fly touches one of the hairs,  the leaf closes quickly.  The fly cannot get out.  In about half an
hour,  the leaf presses the fly until it is dead.  Then, the plant covers the fly.  Slowly, the plant eats the fly.
     Why do plants do it? Most plants get what they need from the sun, the air, and the ground. In some
places, the ground is very poor. It doesn"t have all these important things, especially nitrogen (氮).
Animal meat has a lot of nitrogen,  so some plants eat meat to get what they need.  Let"s hope that some
of the bigger plants don"t get the same idea! 1. The Venus flytrap is a kind of  _______.           A. plant
B. animal
C. food
D. meat 2. The Venus flytrap grows in  _______.                 A. most parts of the world
B. some parts of Africa
C. dry parts of the United States
D.  wet parts of England 3. From the passage,  we learn that _______.               A. all plants can eat people
B. all plants can eat animals
C. some plants can eat people
D. some plants can eat animals 4. The  underlined  word  "presses"  probably  means "_______" in Chinese.     A. 挤压
B. 关上
C. 打开
D. 松开 5. Why do some plants eat animal meat? Because _______.     A. plants are dangerous to animals
B. animals are dangerous to plants
C.  plants want to get what they need from animals" meat
D.  plants want to protect themselves against animals

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阅读理解。Most children like watching TV. It"s very interesting. They can learn a lot about their country and the world by watching TV. They can learn better and more easily on TV. Why? Because they can listen and watch at the same time. They can"t see anything over the radio. TV helps to open children"s eyes. TV helps to
develop their brains(智力),too. They can learn newer and better ways of doing things. They may find the world is now smaller than before. Many children watch TV on Saturday and Sunday evenings. Children
are always busy with their homework during the week. A few children watch TV every night. They go to
bed very late. They don"t get a good rest. 1. Why do children like watching TV? Because ___________.A. they can see a lot of animals
B. they can hear birds singing
C. they can watch football games
D. they can learn a lot of things about their country and the rest of the world2. Children can see __________ over the radio.A. nothing
B. anything
C. something
D. everything3. TV can help children __________ their eyes and develop their brains.A. opens
B. opened
C. open
D. get4. Children can learn newer and better __________ of doing things on TV.A. pictures
B. ways
C. books
D. food5. Children can listen to and see something at the same time __________ .A. on TV
B. over radio
C. in books
D. by telephone

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