Height is just one of the features your genes (基因) decide. In fact,because you have two parents,your genes provide you with a height that usually lands somewhere between the height of each parent. If both your parents are tall,then most probably you will be tall too. But if you have questions about how tall you’re going to be,ask your doctor if he or she can help you find them out.

But genes don't decide everything. For example,eating an unhealthy diet can keep you from growing to your full potential. Getting plenty of sleep and enough exercise will help you grow to the expected height.

It’s natural that you’re wondering how fast you should grow. There's no perfect or right answer. Generally speaking,kids grow about 6 cm a year between age 3 and the time when they start puberty.

Your doctor will know how your growth has been going over the years. 2 cm here and 3 cm there make a little difference to the height you’re at now. How have you been growing up to this height? What other changes may your body be going through?

Don’t be amazed if you seem to have grown a lot in a very short time. Everyone has a growth spurt (高峰) during puberty. The age for starting puberty is about 10 for girls and about 11 for boys. But it can be earlier or later —between 7 and 13 for girls and 9 and 15 for boys.

You’ll usually begin to notice that you’re growing faster about a year after your body starts to show the first changes of puberty.

() 46. If you want to know how tall you should grow,    .

   A. you should have enough exercise

   B. you can ask doctors for help

   C. you should take some special medicine

   D. you can record your growth during puberty

() 47. The Chinese meaning of the underlined word “puberty” is “”

   A. 童年时期   B. 婴幼儿时期   C. 习惯养成期   D. 生长发育期

() 48. This passage is mainly about.

   A. how the genes work in your body

   B. how your parents’ heights influence you

   C. how you look like your parents

   D. how you grow to a certain height

() 49. After reading this passage,we can explain.

   A. how good it is to be a doctor

   B. how much sleep we need

   C. why genes can’t decide everything

   D. what a healthy diet is

() 50. Which is NOT mentioned in the passage?

   A. Your height most probably depends on how tall your parents are.

   B. Girls’ age for starting puberty is usually earlier than that for boys’.

   C. The features showing the first changes of puberty between boys and girls are different.

   D. You may be amazed sometimes when you grow too fast.

(C) Why do we like drinking water from plastic bottles? Some people think it is healthy and clean. Others drink bottled water because it’s easy —you can carry it around with you.

In hot countries,likeGreece,we often buy bottles of cold water in summer.

However,making lots of plastic is not a good idea for many reasons. First of all,we need a lot of oil for plastic products. We usually use oil as a ^source of energy. If we reduced the number of bottles we made,we wouldn’t need so much oil. Plastic bottles also pollute the environment. If we recycled all our plastic bottles,we wouldn’t need so much space for rubbish dumps. But in Greece,we don't recycle much of the plastic we use. In 2006,Greeks recycled only about 10% of plastic waste. The rest became rubbish on land and in rivers and seas.

So next time you want to throw away a plastic bottle in the litter bin,stop and think. If you recycled it,you would help the environment. But what can you do when there isn’t a recycling bin near you? Well,there are lots of useful ways that you can use your bottles again. For example,an empty bottle makes a great piggy bank for your pocket money,and if you cut a bottle in half,you will have a plant pot. Go green!You can make a difference.

() 41. What is NOT mentioned about bottled water in this passage?

   A. It's healthy. B. It’s clean. C. It's easy. D. It’s expensive.

() 42. Plastic products are made from.

   A. energy   B. oil   C. rubbish   D. plants

() 43. of plastic waste became rubbish inGreecein 2006.

   A. 10%   B. 50%   C. 80%   D. 90%

() 44. Which is the best way to deal with used plastic bottles?

   A. To recycle them. B. To make a piggy bank.

   C. To make a plant pot. D. To drop them into the river.

() 45. The underlined part in this passage tells us “

   A. To make a different life,you’d better go outside

   B. To look different,you’d better wear green clothes

   C. To protect the environment,you can do something

   D. To go green,you should use plastic products

The world itself is becoming much smaller by using modern traffic,TV sets,telephones and so on. Life today Ls much easier than it was hundreds of years ago,but there are also new problems. One of the biggest is pollution. Pollution comes in many ways. We see it,smell it,drink it and even hear it.

The more people,the more pollution. Many years ago,the problem was not so serious because there were not so many people. Man is now slowly polluting the whole world.

Air pollution is still the most serious. It’s bad to all living things in the world. Water pollution kills our fish and pollutes drinking water. Noise pollution makes us become angry more easily.

Many countries are making rules to fight against pollution. They stop people from burning coal in houses and factories in the city.

The pollution of S0₂ is now the most dangerous problem of air pollution. It is caused by heavy traffic. It is true that if there are fewer people driving,there will be less air pollution.

() 36. Our world is becoming much smaller.

   A. because the water is being polluted day and night

   B. thanks to the scientific development

   C. because of the rise in population

   D. because the earth is blown away by the wind every year

() 37. Thousands of years ago,life was it is today.

   A. much easier than   B. as easy as

   C. as hard as   D. much harder than

() 38. Pollution comes in many ways. We can even hear it. Here “it” means “

   A. water pollution   B. air pollution

   C. noise pollution   D. rubbish

() 39. Air pollution is the most serious kind of pollution because.

   A. it's bad to all living things in the world

   B. it makes much noise

   C. it has made our rivers and lakes dirty

   D. it makes us become angry more easily

() 40. Which of the following is NOT true?

   A. Many countries are making rules to fight against pollution.

   B. The problem of pollution is not so serious because there are so many people.

   C. From now on,people should try to go to work by bus or bike instead of by car or motorbike. It is helpful in fighting against the pollution of SO₂.

   D. The pollution of the earth now is much worse than before.

  Everything that humans hear is in the form of sound waves (波) . Just as the eye sees colours in the form of light waves. The ear and the eye turn these different waves into signals that the brain can make sense of.

The ears and the brain have an amazing ability to recognize (识别) particular sounds. For example,a mother can often tell when her baby is crying even if there are other crying babies in the same room. This is because the sound of her baby crying has a special meaning to her and the brain has recorded its importance.

The ability to recognize sounds improves with experiences. As the brain receives information about sounds from day to day,it stores the information in its memory. When the brain hears new sounds,it gives meanings to them based on the information already in the memory. This is why certain words or songs can make a person happy. Often it is not the words or songs themselves that cause this feeling. The sounds are connected to happy memories for that person.

Another hearing process controlled by the brain is to decide where a sound is coming from. One ear is usually closer to the source of a sound than the other ear is. Sound waves are stronger when they reach the ear that is closer. They also reach the closer ear first. The brain recognizes these differences and uses them to decide the location of the source of the sound.

() 31. Which of the following shows the normal hearing process of a mother hearing her baby crying?

a. The ears receive the sound waves.

b. The mother recognizes her baby’s crying.

c. The sound waves turn into signals.

d. The baby^'s crying travels in the form of sound waves.

e. The brain connects the signals to the information in the memory.

   A. d—a—c—b—e   B. d—a—c—e—b

   C. a—d—c—b—e   D. a—d—c—e—b

() 32. Certain words or songs can change a person’s mood mainly because of his.

   A. lifestyle   B. personality

   C. experiences   D. hobbies

() 33. Why does a person feel happy when he hears some songs?

   A. Because certain words or songs can make a person happy.

   B. Because a person has the ability to recognize the sounds.

   C. Because certain sounds are connected to happy memories for that person.

   D. Because the person feels the songs are special.

() 34. According to the last paragraph,it will be the most difficult for a person who has lost the hearing in one ear to tell.

   A. where the source of a sound is from   B. how loud a sound is

   C. when a sound starts to appear   D. what makes a sound

() 35. What is the best title for this passage?

   A. Human brains’ amazing facts   B. Human hearing characteristics

   C. How to improve hearing   D. How humans hear

“What can you do when you have done nothing but make your whole life in a mess?” These were the words I heard when I 16 the TV the other day. They were coming from one of the talk 17 that are very popular on TV these days. I started to turn the channel but the words made me 18 for a moment.

I 19 the speaker. He was even not more than 18 years old,20 he was already writing off (摒弃) his life as a useless waste.

Today must be the 26 of a new life for each of us. We can get joys right now. We can share love today. We can live in happy moment right now. It doesn’t matter 27 hard your life has ever been. Our life today can be full of joys and our future can be full of 28It doesn’t matter if we are eight 29 eighty—we can still make our life 30 Life is not over until your last heartbeat. Start today,then,to make your heart beat with joys,love and light.

() 16. A. turned up   B. turned off   C. turned on   D. turned down

() 17. A. show   B. shows   C. showing   D. showings

() 18. A. stop   B. to stop   C. stopping   D. stopped

() 19. A. looked up   B. looked at   C. looked into   D. looked for

() 20. A. because   B. if   C. but   D. why

() 21. A. so   B. so a   C. such   D. such a

() 22. A. at   B. until   C. in   D. on

() 23. A. complain   B. complaining   C. complained   D. are complaining

() 24. A. wrong   B. mistakes   C. kindness   D. sad

() 25. A. it   B. this   C. that   D. them

() 26. A. end   B. ending   C. begin   D. beginning

() 27. A. how   B. what   C. when   D. why

() 28. A. happiness   B. sorry   C. anger   D. worries

() 29. A. and   B. or   C. but   D. to

() 30. A. wonder   B. wondering   C. wonderful   D. less wonderful

() 15. 一 I m going to take part in The Voice of China next month.

—I am sure you will win.

   A. Never mind. B. Good luck! C. What a pity! D. My pleasure.

() 14. — Can you guess if Mike swimming this afternoon?

—I think he will go with us if he free.

   A. will go;is   B. will go;will be   C. goes;is   D. goes;will be

() 12. The government has decided the telephone lines to every village.

   A. having;connecting   B. having;to connect

   C. to have;connected   D. to have;to connect

() 11. — I'm sorry,sir. I've made a lot of mistakes in the exam.

—Never mind.，the exam is a little difficult.

   A. In all   B. First of all   C. After all   D. Above all

() 10. He became a doctor 27.

   A. on the age   B. on the age of   C. at the age   D. at the age of