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      Imagine this: a television screen has the size and thickness of a piece of paper. You carry it around in
your pocket and take it out when you want to watch a show. Imagine a guitar so tiny that you can't see it
with the human eye, but you can hear sound when its strings are pulled.
      Nanotechnology (纲米技术)  is the science that deals with doing things in a very small way, and it is
being studied and developed all over the world. Many scientists say nanotechnology will produce the next
industrial revolution (工业革命) .
      Perhaps nanotechnology will have the biggest influence on medical science. Imagine manobots (纲米机器人) in medicine. Thousands or even millions of tiny machines can be sent into the human body with
specific tasks. For example, they can be designed to find and destroy cancer cells or viruses (病毒). Other machines may stay in the human body for ever to help organs (器官) that are not working properly.
      When could all of these happen? Scientists predict that most of these are possible in the next 30 years. Thousands of scientists around the world are working on these micro - machines.  Nanotechnology is just around the corner.
1. The two examples in Paragraph l are used to __________            
A. introduce the smallest television            
B. introduce a new kind of guitar            
C. introduce the topic of the passage
2. Nanotechnology ___________            
A. will cause an industrial revolution            
B. deals with things in old ways            
C. has studied the whole world
3. The underlined word "they" in the third paragraph refers to (指代)________            
A. scientists          
B. human bodies            
C. tiny machines
4. The tiny machines _____________          
A. are too small to be repaired            
B. can be put in a human body to kill viruses            
C. may not work well in a human body
5. The underlined phrase "around the corner" in the last sentence means"_________"          
A. far away  
B. at present      
C. in the near future
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       According to a new Ministry of Education (教育部) survey, student safety has become a big
problem. Nearly 50 percent of students say they are worried about robbery  on the way to and from
school. Now in many big cities in China, some school has taught an unusual lesson: self - protection
(自我保护). Students like this lesson as there are no exams or boring classes. And they can learn how
to save lives and know how to stop danger before it really happens.
       Chen Haoyu, a teacher at Beijing No. 25 Middle School and a self - protection expert, gives young
students advice on how to deal with danger.
       If you are robbed
       Keep calm. If you cannot cry for help or run away, give the robber your money. Try to remember
what the robber looks like and tell the police.
       If you are in a traffic accident
       If you are hurt by a car, take down the car number; if it is a bicycle, try to contact your parents
before you let the rider go. This is because you don't know how seriously you are hurt.
       If it is raining hard and there is lightning
       Don't stay in high places and keep away from trees.
       When there is a fire
       Get away as fast as you can .Put wet things on your body and try and find an exit. Do not take the
lift!
       If someone is drowning(溺水)
       If you can't swim, don't get into the water. Cry out for help.
       Remember that danger is never as far away as you think. Take care of yourself at all times!
1. Why do students like the self - protection lesson?
A. Because there is advice on exams.
B. Because they can learn how to protect themselves.
C. Because they like self - protection experts.
D. Because they are free to do anything during the lesson.
2. The underlined word "contact" means _______.
A. end up      
B. wait for      
C. search for      
D. get in touch with
3. If your house is on fire, you must _____.
A. put dry things on your body    
B. run quickly and take the lift
C. take everything you have and then run away
D. run away and find an exit as quickly as you can
4. If you see a child fall into the river, but you can't swim, you_______.
A. should telephone the doctor      
B. can jump into the river and save him
C. can do nothing                
D. should cry out for help
5. What's the best title for this passage?
A. Self- protection              
B. How to take care of yourself
C. The popular lesson            
D. An interesting lesson
阅读理解。

     The rockets take astronauts and man-made satellites into space. The satellites are used for
communication, weather monitoring and research. But how do satellites stay up without falling down?
     There are two opposite forces (力量) acting on the satellite. One of them is the force of gravitation
(地心引力), which tries to pull the satellite towards the earth. The other force is created by the rotation (旋转) of the satellite around the earth. This force tries to take the satellite away from the earth. With
these two forces, the satellite goes round and round. The gravitational pull of the earth (the force which
pulls everything towards the ground) is like a rope which keeps the satellite from flying away.
      Everything that goes up has to come down. It is only a matter of time before a satellite comes back
to the earth. As time goes by, the satellite loses its speed, which makes the gravitational pull stronger
than the force pulling it away. This makes the satellite crash (坠落) down to the earth.
1. Which of the following uses of satellites is NOT mentioned?
A. communication
B. monitoring the weather condition
C. doing some research
D. taking pictures
2. The force that pulls the satellite towards the earth is created by ________.
A. the earth
B. the satellite itself
C. the rotation of the satellite
D. the rope  
3. Why can't the satellites fly away?
A. Because of the force from the earth.
B. Because the satellite is too big.
C. Because of the force created by the rotation of the satellite around the earth.
D. Because people on earth have made ropes to tie the satellites tightly.
4. The satellite will finally crashes down to the earth ________.
A. when it flies faster
B. when its speed slows down
C. when people cut the rope
D. when there is no electricity in it
5. Which of the following is TRUE according to the passage?
A. There are four forces acting on the satellite.
B. The force of gravitation makes the satellite go round and round.
C. As time goes by, the satellite will finally fall down.
D. The satellite will stay in space forever.

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