52. The editor thinks _____.

   A. children should play computer games in the net bar secretly

   B. playing computer games can be very helpful to children’s studies

   C. children should be honest and try to make their parents understand them

   D. foreign parents don’t care for their children as much as Chinese parents

C

   Most people around the world are right-handed. This also seems to be true in history. In 1799, scientists studied works (作品) of art made at different times from 1,500 B.C. to the 1950s. Most of the people shown in these works are right-handed, so the scientists guessed that right-handedness has always been common through history. Today, only about 10% to 15% of the world's population is left-handed.

   Why are there more right-handed people than left-handed ones? Scientists now know that a person's two hands each have their own jobs. For most people, the left hand is used to find things or hold things. The right hand is used to work with things. This is because of the different work of the two sides of the brain. The right side of the brain, which makes a person's hands and eyes work together, controls the left hand. The left side of the brain, which controls the right hand, is the centre for thinking and doing problems. These findings show that more artists should be left-handed, and studies have found that left-handedness is twice as common among artists than among people in other jobs.

   No one really knows what makes a person become right-handed instead of left-handed. Scientists have found that almost 40% of the people become left-handed because their main brain is damaged (损害) when they are born. However, this doesn't happen to everyone, so scientists guess there must be another reason why people become left-handed. One idea is that people usually get right-handed from their parents. If a person does not receive the gene (基因) for right-handedness, he / she may become either right- or left-handed according to the chance and the people they work or live with.

Though right-handedness is more common than left-handedness, people no longer think left-handed people are strange or unusual. A long time ago, left-handed children were made to use their right hands like other children, but today they don't have to.

51. The underlined (划线的) sentence in Letter Two means “ _____ ”.

   A. You must do everything in front of your parents

   B. You must always listen to your parents carefully

   C. You should not do anything that makes your parents worry about you

   D. You should tell your parents what you do before or after doing it

50. The boy goes online _____.

   A. to get news on QQ                                  B. just to have a rest

   C. to show he hates study                             D. to make new friends

49. From the passage we can learn that Li Ping often _____.

   A. talks with his friends on the Internet         B. plays basketball after school

   C. plays computer games at home                 D. chats online before homework

48. If you leave something expensive at home, you should ______.

   A. never go back for that                      B. keep down close to the floor 

   C. not get out without it                        D. try your best to bring it   

B

Letter One

Dear Editor (编辑),

   After I finish my homework, I often go online and chat (聊天) with my friends. Sometimes I play Internet games. But my parents hate to see me playing games on the computer. Maybe they have heard too much news about how QQ and Internet games harm (伤害) children. Once I went to a net bar (网吧) to play games after school. But after that I told my parents that I was playing basketball at school. I said so because I didn’t want to make them unhappy. I feel bad about it. However, I need to rest for a while by playing computer games after studying for a long time. I really want my parents to understand that. Do foreign parents do the same to their children? Please help me.

Li Ping, Beijing

Letter Two

Dear Li Ping,

   I don't think it’s strange for parents to keep their children away from anything bad. Foreign parents will do the same as your parents! They may not let their children watch TV for too long a time, or like your parents, they don’t want their children to play computer games.

Talk to your parents and be honest (诚实的) to them, I think. Tell them what you are doing and why you are doing so to make them understand you. It’s never good to do things behind your parents. They aren’t fools as you think sometimes! Our parents seem to know what is the best for us.

Remember: to be honest is the best way.

Good luck,

Rebecca

47. Why shouldn’t you use the lift when a fire breaks out?

   A. Because taking the lift is so slow.      B. Because there will be more fire.

   C. Because the lift may keep you safe.    D. Because the lift may not work.

46. When a fire is burning outdoor, you should _______________.

   A. open the door and run away                 B. test the door before opening it

   C. call for a much quicker help                     D. find some water and put it out

45. When people are asleep and a fire breaks out, what will you do?

   A. Put out the fire yourself.                      B. Wake up your parents first.

   C. Shout out as loudly as you can.                D. Run as fast as possible.

7. Don’t go back

Never go back into a burning building!

6. Don’t use the lift

Never use the lift during the fire. It may also go wrong.