Like many other animals, swallows will fly south when the days turn cold and the leaves from trees
begin to fall. They travel many miles to find a warmer winter. This type of travel is called migration (迁徙).
Birds are animals that like to migrate a lot when it is cold. About 600 out of 9,000 kinds of birds do it.
They leave in autumn and come back during the warm spring months.
Many birds don"t like the cold. They need food, but plants die and insects (昆虫) hide in winter. So,
they"ll only come home the next year, when there will be plenty of food for them to eat.
But the trip is often hard and not safe. Many birds fly in groups and make noises. Cranes (鹤) fly in
groups like the letter V, or in a row. Others travel in pairs or alone.
Some can travel a very long way. They fly between lands. For example, the Arctic tern (北极燕鸥)
can travel 20,100 kilometres. They build a home near the North Pole (北极), go to the Antarctic (南极洲)
in autumn, and then come back in spring.
How do the birds find their way? They look at things like the sun, moon and stars. They never get lost. |
阅读短文，根据短文内容填表（每空不超过三个单词，最后一空为开放性试题，可多于三个单词）：
| What is migration? | It"s when animals travel from cold places to find a 1.____.
They leave in 2.____ and come back in 3.____. | | Why do birds migrate? | Because plants 4.____ and animals 5.____. There"s not much 6.____
for them during cold winters. | | How do birds migrate? | The trip is often 7.____ and dangerous. Many travel in 8.____
and 9.____. | | How do birds find their way? | They find their way by looking at the 10.____, 11.____ and 12.____. | What can we learn from birds"
migration? | Animals are born naturally to be able to 13.____. |
答案
1. warmer winter 2. autumn 3. spring 4. die 5. hide 6. food 7. hard 8. groups 9. make noises
10. sun 11. moon 12. stars 13. suit themselves to the environment (本空为开放性试题，答案不是唯一的。) |
举一反三
| 阅读理解。 | During the cold winter days you may find it hard to wake up in the morning. It"s warm and cozy
(舒适的) in your bed.
In winter, many animals like to sleep, too. But their sleeps can be very long and deep. This kind of
sleep is called hibernation (冬眠). During this kind of sleep, their temperatures go down, and hearts beat
(跳动) slowly. They take very small breaths.
Animals can hibernate for part or all of the winter. It"s hard for them to find things to eat. When they
go to sleep, they don"t need much food.
Bears, hedgehogs (刺猬) and chipmunks (花栗鼠) go to sleep in their homes. Frogs and snakes
hibernate, too. Frogs move into the earth under water to keep themselves warm.
Before they go to sleep, they eat a lot to get fat (脂肪). Some also keep food in their homes to eat later.
Bears are the biggest animals that hibernate. They often sleep in caves (山洞).
Bears must eat a lot of things like nuts before going to sleep for a long time. They eat as much as 300
apples (that"s the same as 60 hamburgers) each day for many weeks. They can eat for 20 hours in a day!
Bears can go into a very deep sleep. It can last from three months to half a year. During that time they
do not eat, drink or go to the toilet. A mother bear can give birth to babies during her hibernation.
Other animals sleep less. Sometimes they wake up to eat, or take a walk. Then they go to sleep again. | 根据短文内容判断正(T)误(F)：
( )1. Hibernation is a the long and deep sleep of animals in winter.
( )2. During hibernation, animals don"t breathe at all.
( )3. Bears eat lots of food before they hibernate in winter.
( )4. Bears don"t go to the toilet during their hibernation.
( )5. Frogs hibernate in the Earth under water.
( )6. Mother bears can"t give birth to babies during hibernation.
( )7. We can infer that fat is an important food for animals during hibernation.
( )8. Bears, hedgehogs, chipmunks, pigs and frogs hibernate. | | 根据下列短文内容，在短文后的空格处填上一个恰当的词，使短文完整、通顺。 | In the future, houses will be very different. Your house 1. have a huge roof (屋顶). It will
produce electricity with sunshine. The walls will be amazing, too. They can change colors according
2. your mood. Many people will 3. to other stars to build houses, 4. as Mars for
a whole new life.
Every family will have at least one robot to do housework. With this robot, you may 5. that
you will become lazy and fat. Don"t worry. There will be a machine. You get into the 6. and
choose a service to be strong 7. slim (苗条). It 8. only a few days. Also, we will eat a
kind of food pill (药片) 9. of three meals a day.
There are more crazy ideas for the future. Will these dreams come 10. one day. It"s your call. | | 完型填空。 | The computer was one of the most important inventions of last century. The first computer was as large
as a room. Now some computers are as 1 as television sets. Some computers can even be made smaller
than a book. About 20 years 2 , the computer was a strange machine in china. Not many people
understood it and said yes to it.
Today much of that is 3 . In 1984, when Deng Xiaoping 4 two pupils working on the computers
in Shanghai, he said that computer lessons would start from children. So there was the first computer book
for middle school students. Now in shanghai 5 all middle school have classrooms for computer courses
(课程). Some of the students now have their 6 computers at home. With the help of internet (因特网),
they can send and 7 messages and emails. They can learn about the world more quickly. Now computer
are 8 used in banks, factories, airports and so on. The computer is coming into everyone"s 9 , so it is
important for us to learn 10 to use a computer freely.
( ) 1. A. huge
( ) 2. A. over
( ) 3. A. changing
( ) 4. A. looked
( ) 5. A. most
( ) 6. A. new
( ) 7. A. receive
( ) 8. A. recently
( ) 9. A. life
( ) 10. A. when | B. small
B. before
B. moving
B. heard
B. almost
B. old
B. give
B. widely
B. live
B. where | C. great
C. long
C. turning
C. found
C. only
C. own
C. do
C. slowly
C. lives
C. how | D. little
D. ago
D. happening
D. watched
D. no
D. simple
D. make
D. carefully
D. living
D. why | | 阅读理解。 | A plant makes its own food in its leaves. Water comes to the leaves through the roots ( ). Air gets into
the leaves through very small holes. The green coloring ( ) in the leaves uses the water and air to make the
food for the plant. It also needs sunshine because a plant can make food only when the sun is shining. Animals
and people could not live without green plants. They both eat plants. People and some animals also eat the meat
of some animals and these animals eat plants. | | 1. A plant gets food from . | | [ ] | A. the sun
B. the air
C. its roots
D. its leaves | | 2. What things can make the food for a plant? | | [ ] | A. Sunshine, water, air and the roots.
B. Water, air, meat and green coloring.
C. Air, sunshine, water and green coloring.
D. Water, sunshine, animals and green coloring. | | 3. A. plant has very small holes in its leaves . | | [ ] | A. for water to come in
B. for air to come in
C. for sunshine to come in
D. for green coloring to come in | | 4. A plant can make its food when it is . | | [ ] | A. sunny
B. rainy
C. cloudy
D. windy | | 5. From the text we know . | | [ ] | A. people can"t get food without animals.
B. people can"t get plants without animals.
C. people can"t get animals with out meat.
D. people can"t get food without plants. | | 阅读理解。 | Rivers are one of our most important natural resources (自然资源). Many of the world"s great cities
are located on rivers, and almost every country has at least one river flowing through. That plays an
important part in the lives of its people.
Since the beginning of history, people have used rivers for transportation. The longest one in the
United States is the Mississippi. The lifeline of Egypt is Nile. To the people of India, the Ganges is great,
but it is also important for transportation; ships can travel along it for a thousand miles. Other great rivers
are the Congo in Africa and the Mekong in Southeast Asia. The greatest of all for navigation (航海),
however, is the Amazon in Brazil. It is so wide and so deep that large ships can go about two thousand
miles upon it.
Besides transportation, rivers give food to eat, water to drink, water for crops, and chances for fun
and recreation for the people who live along their banks. In order to increase the supply of water for crops,
engineers sometimes build a dam (大坝) across a river and let a lake form behind the dam. Then people
can use the water not only to irrigate (灌溉) their fields but also to make electricity for their homes and
industries. However, large cities and industries that are located upon rivers often make problems. As the
cities grow in size and industries increase in number, the water in the rivers becomes polluted with
chemicals and other materials. People are learning the importance, however, of doing more to keep their
rivers clean if they want to enjoy the benefits (利益) of this natural resource. | | 1. The greatest river for navigation is . | | [ ] | A. the Amazon
B. the Nile
C. the Mekong
D. the Mississippi | | 2. Which of the following is WRONG according to the passage? | | [ ] | A. The Nile is in India.
B. Almost every country has at least one important river.
C. Many cities are located on rivers.
D. Rivers play an important part in the lives of people. | | 3. From a dam, people can use the water for . | | [ ] | A. keeping the rivers clean
B. only making electricity
C. washing clothes
D. irrigating and making electricity | | 4. The water in the river is polluted because of . | | [ ] | A. people"s drinking water too much
B. people"s swimming in the river too much
C. chemicals and other materials
D. people"s building a dam across a river | | 5. The best title of the passage is ______. | | [ ] | A. Rivers in Cities
B. The Importance of Rivers
C. Transportation
D. Natural Resources | 最新试题
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