a bee has found some food, it goes 1 its home. It’s 2 for a bee to tell 3 bees where the food is by speaking to 4 , but it can do a little dancing. This tells the bees where the food is and 5 it is. Some animals show how they feel by making sounds. It’s not difficult to tell if a dog is angry 6 it barks.Birds made several different sounds and 7 has its own meaning. Sometimes we human make sounds 8 we make sounds like“Oh!” or “Ouch!” to show how we feel about something or when we 9
something on our feet.
We
humans have languages. We have words. These words have the meaning of things. actions, feelings or ideas. We 10 give each other information. By writing down words, we can remember what hashappened or send messages to people far away.
( )2. A. important
( )3. A. each other
( )4. A. it
( )5. A. how long
( )6. A. so that
( )7. A. each
( )8. A. in the same sound
( )9. A. put
( )10. A. able to
B. difficult
B. another
B. him
B. how far away
B. before
B. every
B. by the different sound
B. drop
B. are able to
C. necessary
C. the other
C. them
C. how many
C. until
C. all
C. in the same way
C. fall
C. are able
D. impossible
D. others
D. themselves
D. how old
D. because
D. some
D. by the different way
D. set
D. be able to
people send computer viruses(病毒) to computers. A computer virus is a set of bad instructions written
just to hurt computers.
Someone makes the virus and sends it to other computers. It is set (被设置) to turn on by itself.
When it does, many computers around the world begin to have problems.
When the virus is turned on, it makes the computer do things it is not supposed to do. A lot of useless
information starts getting into the computers. Sometimes people lose things that are very important because
of viruses.
People have to turn off their computers. Others stop their computers so that they won"t get hurt. by
other computers. The virus is spread(传播)when people send information to others. Once in the computer,
it. Tells the computer to do bad things.
B. everyone has to buy one
C. computers help people do better work
D. computers are interesting
B. It"s a program that hurts computers.
C. It"s a bad letter that. is sent to people.
D. kind a kind of useful information.
B. Useless information starts getting into it.
C. It can make the computer work well.
D. It can spread much good information.
B. They don"t want to get sick.
C. They don"t want to get a computer virus.
D. They want to make the computer turn on by itself.
B. A New Project
C. Modern Computers
D. Computers and Information
morning we are ready to work and play again. Our body grows most when we are asleep. Children
who are tired usually need sleep. We can get better at our lessons after having plenty of rest. Boys
and girls who are eight or nine years old need ten hours of sleep every night. Our body needs plenty
of air when we are asleep. If we do not get enough fresh air, we will feel tired when we wake up.
While in bed we must not cover our head, our lungs need to get enough fresh air. If we open our
windows at night, we can have plenty of fresh air. Cool air is better than warm air.
B. playing
C. sleeping
D. exercising
B. hungry
C. happy
D. grow
-__________ during the sleep.
B. Not enough fresh air
C. Too much cold air
D. Too much sleep
B. 9 hours.
C. 10 hours.
D. 11 hours.
B. Covering.
C. Warm air.
D. Exercise.
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| The computer is a very wonderful machine, and it is so 1 today that it seems we 2 live or work without it. Computers are used in many 3 in offices, in factories, in big shops, at schools, and even at home. With the computer people are living a better 4 . The computer is one of the greatest inventions in the 5 century. The first computer was built in America which was named Eninc, and it was not only very 6 , but also quite heavy. It was as big as two rooms! But the computer is developing very fast. Today they are becoming smaller and smaller, lighter and lighter, and 7 faster and faster. There are so many kinds of different computers in the market that you can easily choose one that you like best. As the computer can do a lot of things for people, it helps us to learn about the real world. With the computer you can 8 an E-mail just in a few seconds to your friend to receive your 9 . Now you can see the computer really gives us a very nice picture about the world of tomorrow. So as students in the 21st century, we have to work hard and learn how to 10 the computer very well. Don"t you think so? | |||||||||||||||||||
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