When you look at the sky at night, the moon looks bigger than the stars. Actually, the moon is much smaller than the stars and the sun. It's much smaller than the earth. But the moon is much close to us than any star.  hat is why it looks so big. If you hold a coin close to your eye, it looks big. If you look at it across the moon, it looks small.

    The moon moves around the earth. It makes one trip in about four weeks. The moon looks flat to us. But it is a round ball, like the earth.

    People once thought the moon had fire on it. They thought the fire made it bright. Now we know the moon is like a mirror. It gets its light from the sun.

    Our sunlight comes from the sun, too. What is the sun? The sun is a star. The stars we can see have their own light. There are many big stars we cannot see. Their light had burned out.  Others are still bright, but they are so far away that we cannot see them. The sun looks bigger and much brighter than other stars because it is the nearest of all stars. The sun and the other stars we see are very hot, but the air around us saves us from the heat of the sun.

    The sun gives us light and warmth. It makes plants grow and turns leaves green. It makes life possible on our earth. It is a life giving star.

52.  It takes_______ for the moon to go around the earth.

    A. more than a week          B. nearly a month

    C. half a year                D. more than a year

53. The moon is bright because_______.

    A. there is some fire on it      B. it is near the sun, too

    C. there is a big mirror on it    D. it can get light from the sun

54.  The passage tells us_______.

    A. the sun is not the biggest star    B. the sun is bigger than any other star

    C. only the sun can shine          D. the sun is one of the farthest stars to us

55.  Why do we call the sun "a life giving star"?

    A.  Because it gives us warmth.

    B.  Because there are some living things on it.

    C.  Because plants and animals can't live without it.

    D.  Because people have to live in the dark without it.

     Stop! Listen! What do you hear? You may hear many different sounds. Some of those sounds may be noisy.  Noise is loud or unwanted sound.

     Noise can be caused by many kinds of machines, such as motorcycles, jet planes, tractors and so on. And, to some people, rock bands (摇滚乐队) are also noise.

     What happens to people who live near noisy machines or use them over a period of time? Doctors find that these people have trouble in sleeping. But, most important, constant  (不断的) loud noise can cause a loss of hearing.

     Scientists use a unit (单位) of measure called a decibel  (分贝)  to measure the loudness of a sound. The sound of a quiet room, for example, measures 35 decibels. Talking measures between 40 to 65 decibels. Sounds from traffic and from some rock bands can measure over 120 decibels. Noise at this high level causes the greatest hearing loss.

     49.  From the passage, we know noise is _______.

          A. wanted sound                 B. loud or unwanted sound

          C. all sounds that you can hear      D. comfortable sound

     50. A "decibel" is a _______.

          A. unit that measures sound

          B. kind of noise

          C. machine that makes very loud noise

          D. person who hates noise

     51.  According to the passage, loud noise can_______.

          A. help people sleep better       B. stop machines

          C. cause a loss of hearing        D. kill people

    Road signs tell people the right way. Turn right? Turn left? Or go ahead? Many signs are not only helpful but also interesting. Do you know the meanings of these signs?

             ★ Clean up after your dog shits.  250 dollar fine!

               Dogs are popular pets in Western countries. In the evening or at the weekend,

             people take their dogs out for a walk. When a dog shits on the road, the owner has to clean it up. If not, he/she will have to pay a$250 fine for it.

    ★Do not feed bears!

    There are lovely bears in zoos. Some visitors like to feed

them meat or bread. But this is very dangerous. If the bear

catches you, he will eat you !

    ★Be careful! This road is dangerous.

     On the sign, a car is driving near a hill. And there is a monster (怪物)

behind the hill. The monster is going to eat the car. This road sign tells drivers to

be careful at this place.

    ★Ducks near here.  Do not hurt them!

     On the sign, a mother duck is taking her children for a

walk. Drivers should slow down at this place. They shouldn't

hurt the ducks.

46. The word "fine" probably means _______.

    A.结尾         B.好的         C.罚金     D.门票

47. Which sign is not about the animals?

48. Which sentence is true?

      A. People like walking their dog in the evening or at the weekend.

      B. Do not feed bears because it's dangerous for the bears.

      C. Be careful because there's usually a monster behind a hill.

      D. Drivers should stop driving when they see ducks on the road.

                                    

There are seven days in a week. Some days are people's favourite, but some are not. In the United States, Monday is the beginning of the weekday. It is the day most Americans like least. And it is certain that the day they like 36 is Saturday. Because Saturday is the 37 of the weekday and it is the beginning of the weekend. Life is  38  at weekends. Most Americans clean their houses, cars or gardens. They  39  the feeling that time seems(好像)to move more slowly. The weekday is for things you have to do, but the weekend is for things you are 40   to do, so you feel that you can enjoy yourselves at weekends. Some people may get in a car and go for a  41 in the country. They like to take part in outdoor activities. They 42 go to a public eating or a film on Saturday night. However, the 43 of weekends is a recent(近期的)invention. In the early years of the 1900s, rich people began to speak of  44  weekends in the country or visiting friends. For most people, the workday was six days 45 at that time. They had to work six days a week.

  36. A. least   B. most    C. more   D. less

  37. A. end    B. beginning  C. middle  D. starting

  38. A. terrible  B. hard    C. different  D. busy

  39. A. hate   B. forget    C. remember  D. enjoy

  40. A. glad   B. able    C. suitable   D. free

  41. A. walk    B. dance   C. drive   D. run

  42. A. must   B. should  C. need    D. might

  43. A. day    B. idea    C. activity  D. dream

  44. A. organizing B. planning  C. spending  D. taking

  45. A. long    B. short    C. early  D. late

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