52. Night blindness is most likely caused by ______.

A. staring for long periods　　　　　　　　　　　　 B. too much betacarotene

C. not enough vitamin A　　　　　　　　　　　　　　 D. vision problems

51. According to the passage, which of the following is true?

A.　　 Ready-made glasses will do harm to one’s eyes.

B.　　 Wearing the wrong type of glasses may do harm to children’s eyes.

C.　　 The human body is unable to change betacarothene into vitamin A.

D.　　 Watching too much television may do harm to children’s eyes.

50. The author mainly wants to say that _________

A. enthusiasm people never get old

B. enthusiasm can make you succeed and enjoy life

C. enthusiasm is more important than experience

D. enthusiasm can give people more success and fame.

D

Wearing the wrong type of glasses will do harm to your eyes. This is not true for adults(成年人), although incorrect glasses may not be good for children under 10. Ready-made glasses, and not wearing glasses when you should, won’t do harm to your eyes, but you may see better with glasses that are specially made for you.

Watching too much television is bad for your eyes. This is not true. People with easily affected eyes may find that they get red and aching from staring at a fixed distance for long periods, but there won’t be any lasting effects.

Carrots will help you see in the dark. Carrots are rich in betacarotene(胡萝卜素), which the body can change into vitamin A, too little of which can cause night blindness. However, people in some countries don’t need to worry about vitamin A deficiency(缺乏). Night blindness is more likely to be connected with another vision problem.

49. How many examples are given in the passage to show the importance of enthusiasm?

A. Three　　 　　　　 B. Two　　 　　 C. Four　 　　　　　　 D. 　Five

48. The author mentions cellist Pablo Casals in the third paragraph to show that____

A. music can arouse people’s enthusiasm

B. enthusiasm can give people inspiration needed to succeed

C. enthusiasm can keep people feel young

D. enthusiasm can keep people healthy

47. Which of the following can best explain the underlined sentence in the second paragraph?

A. Enthusiasm can give you courage and strength in difficult times.

B. If you don’t have enthusiasm, you can achieve nothing.

C. Enthusiastic people never consider money and fame.

D. Enthusiastic people can gain great fame and honor.

46. What is the Chinese for “Enthusiasm”?

A. 热情　　 　　　　　　　 B. 色彩　　　 　　　　　　　　　　　　　 C. 惰性　　　 　　　　　 D. 金钱

45. The writer’s idea seems to be that_____.

A. people from many countries came to live and work in Macao.

B. Portuguese were willing to do business in China.

C. people in Macao serve good food.

D. Macao is a quiet and peaceful place with a lot to see and to do.

C

Years ago ,when I started looking for my first job ,wise advised,“Barbara, be enthusiastic! Enthusiasm will take you further than any amount of experience. ”How right they were!

“Nothing great was ever achieved without enthusiasm. ”Wrote Ralph Waldo Emerson. It is the paste that helps you hang on there when the going tough. It is the inner voice that whispers, “I can do it!”When others shout, “No, you can’t!” It took years and years for the early work of Barara McClintock, a geneticist who won the 1983 Nobel Prize in medicine , to be generally accepted. Yet she didn’t stop working on her experiments. Work was such a deep pleasure for her that she never thought of stopping.

We are all born with wide-eyed, enthusiastic wonder and it is this childlike wonder that gives enthusiastic people such youthful air, whatever their age was. At 90, cellist Palblo Cassls would start his day by playing Bach. 　A s the music flowed through his fingers his stooped shoulders would strengthen and joy would reappear in his eyes. As author and poet Samuei Ulman once wrote, “Years wrinkle the skin ,but to give up enthusiasm wrinkles the soul. ”

Enthusiastic people also love what they do, regardless of money or power. Patricia Mellrath, retired director of the Missouri Repertory Theatre in Kansas City, was once asked where she got her enthusiasm. She replied, “My father, a lawyer long ago told me, I never made a dime until I stopped working for money.”

If we cannot do what we love as a full-time career, we can as a hobby. Elizabeth Layton was 68 before she began to draw. This activity ended periods of depression that had troubled her for at least 30 years ,and the quality of her led one critic to say, “I’m tempted to call Layton a genius. ”

We can’t afford to waste tears on “might-have-beens”. We need to turn the tears into sweat as we go after “what-can-be”. We need to live each moment whole-heartedly, which all our senses-including pleasure in the sweet smell of a back-yard garden, the simple picture of a six-year-old, the beauty of a rainbow.

44. Where will you have a break when you feel worn out?

A. In good restaurants. 　　　　　　　　　　　　　　　　　　 B. In small cool gardens.

C. On some islands. 　　　　　　　　　　　　　　　　　　　　　　　 D. In beautiful parks.

43. You feel in Macao you are back in the old days because_____

A. some of the buildings are now in ruins.

B. you can watch dog-racing or motor-racing.

C. you can go about and look at the old buildings and forts with pleasure.

D. it is a peaceful place.