阅读短文，从每题所给的四个选项（A、B、C和D）中，选出最佳选项。

    Some of the greatest problems we face today are the destruction (破坏) of our environment． Brown clouds, polluted water, endangered wild animals．．, these problems seem so huge．

    So my family does what we can． We take cloth bags to stores instead of using plastic bags． We walk where we don't have to drive．．．

    But does it do any good? When I am the only one in line at the market with cloth bags, am I doing any good? Does my walking to stores make any real difference to the world?

    I recently learned something about flamingos (火烈鸟) which like to get together in groups of a thousand or more． Every year, when the time comes for migration (迁徙), a few of them first takeoff from the lake． But none of the others seem to notice, so the small group returns．

    However, the next day they try again． This time few more fly along with them, but most of them still pay no attention, so they return again． They try for several times． Every time a few more birds join in but, since the thousands of others still take no notice, the great migration plan is once more stopped．

    Then one day something changes． The same small group of birds once again starts flying and a small number more join in just as before, then more． Finally, they all take flight and the migration really begins．

    What a spectacular sight it must be—thousands of flamingos taking off into the sky at once!

    A few can make a difference． Even if you're the one to take the first step, and continue trying, others will someday take notice and together we will solve even our greatest problems．

    Mr. Brown got up late this morning. He was going to be late for work. It was raining hard and the streets were wet. He drove so fast that he didn't see the red lights. He couldn't stop his car and hit a car. An old man got out of the car and called out angrily, "What are you doing? How can you drive so fast? "

    "I'm sorry, sir," said Mr. Brown, "I didn't see the lights turn red." Then he brought out a bottle of wine and gave it to the old man.

    "It's cold today, sir," said Mr. Brown. "Please drink a little, and then you'll get warm."

    The old man drank some wine and became happy. He asked, "I'm feeling much better now.

    Why don't you drink any? "

    "I can't drink anything now, sir," answered Mr. Brown, "I'm waiting for the policeman. Only drunkards（酒鬼）make accidents（交通事故）, you know! "

In a small room, Jenny was lying in bed waiting for an operation (手术), nervous and worried. To her surprise, a new patient was sent into the room. After a kind greeting (打招呼), they began to talk. The 80-year-old newcomer was named Susan. She had two children. Her son was boss of a big company and her daughter worked in a TV station. As her children were too busy to take care of Susan, she lived in an old people's home. Susan was proud of her children who had wonderful jobs and made a lot of money. Jenny really envied (羡慕)Susan. Compared with Susan, Jenny was nothing but an ordinary (普通的) woman from the countryside. Her children were just ordinary workers.

Soon, it was supper time, Jenny's daughter cooked several dishes which were her favorite. Jenny invited Susan to share her supper, but she did not accept the invitation. Susan was expecting her daughter when she received a call. Unfortunately (不幸), her children couldn't come to visit her. Worse still, Susan had missed the mealtime in the hospital. She lay in bed, disappointed and silent. Jenny's daughter offered to buy her some food but she had no appetite (食欲) at all.

The next day, Jenny and Susan would go through a series of regular medical checks (一连串的常规检查) before the operation. Jenny's daughter took care of her carefully while Susan was still alone. Out of sympathy (出于同情), Jenny's daughter helped to queue up (排队), fill in different forms and register (挂号) for Susan. For several days in hospital, even during her operation, Susan's children didn't come. Susan really envied Jenny as her daughter looked after her all the time until she recovered and moved out of hospital.

Care from the loved ones can really make one happy and encouraged, especially for old parents. So don't forget to look after your parents even while you are busy working.

Peter was a robot in Sky City. There were some words1 his name card: "XT-27: The best robot". Yes, he was the best robot here. And he was the only XT-27 robot in the2 as well. Peter thought he was so3 , so he didn't want to make friends with other robots. When they asked him to play, he always said he was4 .

One day, Peter went to5 another city, Bionic City. After getting there, he found there wereXT-27 robots everywhere. Peter was very6 and he walked around the city for a long time. He7 to other XT-27 robots, telling them how happy he was to meet them there. He thought he found8 true friends there. Finally, he9 decided to live there. 

However, as time went by, Peter got10 with living in Bionic City. All the robots here11 the same—one big head and one big eye. And they always did the same thing. There was12 new every day. Peter thought of Sky City. Hundreds of robots lived there13 they were so different. He missed them and wanted to go back to Sky City. 

When Peter14 to Sky City, he was happy to meet so many different robots. He15 that it was great to make friends with them. 

Tony loves his grandma. She often tells him stories about Santa Claus(圣诞老人). 

Today is December 24th. Tony's grandma takes him to Kevin's Store to shop. She gives Tony fifty dollars and says, " Take the money and buy something for someone who needs it. I' ll wait for you in the car. "

Tony thinks of everyone he knows: his family, friends and classmates. Then he thinks of Bobbie. Bobbie sits behind Tony. He doesn't have a warm coat. Tony knows it because Bobbie never goes out to play in winter. So Tony buys a blue coat for him. It looks really warm. 

In the evening, his grandma helps Tony put the coat in a Christmas box, and writes" To Bobbie, From Santa Claus" on it. " Santa helps people but never lets them know, " Tony's grandma says. They put the box in front of Bobbie's house and then go back home joyfully. 

That night Tony knows Santa Claus is real, and they are on his team. 

 Carol is a middle school student. She does 1 in only one subject. That is 2 . Carol always does her history homework well and 3 good grades(分数) in history tests. She likes her history teacher Mr. Aragon very 4 . She feels that he is like her 5 .

 At 6 parent- teacher meeting, Carol's mother has a7 with Mr. Aragon.8 says that Carol doesn't do well in 9 subjects. She hopes Mr. Aragon can 10 her." Oh, I didn't know that. She is 11 . I' ll try to talk to her," says Mr. Aragon.

 When Mr. Aragon talks with Carol 12 her problems(问题), Carol doesn't feel good, 13 she is grateful(感激的). She knows that Mr. Aragon is 14 trying to help. Carol 15 his ideas and tries to do well in those subjects.