Global warming is a world problem and Monitoring (监制)it usually needs a lot of math knowledge. But Francisco and Ruby track(追踪) what climate change is doing to five different plants in Tucson, Arizona and they are only in the second grade.

  “We are collecting data because the weather is changing and the plants are blooming (开花),” Ruby explained.

   Many other students at Borton Primary Magnet School and Sunnyside High School in Tucson are going outdoors to be part of a new scientific action to figure out（计算）how the biological timing of the Earth is changing. It’s a research project that everyone, even a kindergartner, can join in.

  The National Phenology（生物气候学）Network is calling on volunteers to help track early spring blooms and changes in animals caused by global warming. It’s called Project Budburst. When it was first open to the public last year, thousands of people joined in .

   “Everyone can offer his hand by tracking the timing of flowering events or leaf-out events for plants and animals in their backyard,” said Phenology Network director Jake Weltzin.  

The idea is that tracking flowers blooming —— especially lilacs（丁香）which ordinary people have helped track for many years ——is simple. The Project Budburst website gives directions on what to look for in different parts of the country.

   University of Maryland professor David said it was so easy to figure out what’s blooming that a lack of special knowledge wasn’t a problem.

51. What would be the best title for the text?

A. Even Kids Can Help Monitor Global Warming.   

B. People Pay More Attention to Global Warming.

C. Students Are Asked to Join Science Research Projects

D. Schools Call on Students to Take on Outdoor Activities.

52. What’s the purpose (目的)of Project Budburst?

A. To protect plants and animals from global warming.

B. To attract more students to science.

C. To remind people of the results of global warming.

D. To study the changing biological timing of the Earth.

53. People taking part in the project can get some information by _________.

A. calling network director Jake Weltzin                 B. visiting the Project Budburst website

C. writing to the National Phenology Network         D. asking professors with phenology knowledge

54. If you join in Project Budburst, you should _____________.

A. get some special training first                            B. do some careful observation（观察）outdoors

C. keep some plants or animals in your backyard     D. invite some other volunteers to work with you

55. The example of Francisco and Ruby is used to show that_________.

A. it is quite natural to do scientific research          

B. more kids are hoping to be scientists in the future

C. primary schools are focusing on science education

D. the new project is very simple and even kids can join in it

Most people want to be happy, but few know how to find happiness. Money and success alone do not bring lasting happiness. Aristotle, a Greek thinker, said, “Happiness depends upon ourselves.” In other words, we make our own happiness. Here are a few suggestions to help you be happier.

The first secret of happiness is to enjoy the simple things in life. Too often, we spend so much time thinking about the future —for example, getting into college or getting a good job —that we fail to enjoy the present. You should enjoy life’s simple pleasures, such as reading a good book, listening to your favorite music, or spending time with close friends. People who have several close friends often live happier and healthier lives.

Another secret to living a happy life is to be active, and have hobbies where you forget your problems and time. Many people experience this dancing, or playing a sport, such as swimming. You can forget about your problems, and only think about the activity. Finally, many people find happiness in helping others. Studies show that people feel good when they spend their time helping others. If you want to feel happier, do good things for someone. You can help a friend with his or her studies, go shopping to buy food for an elderly person, or simply help out around the house by washing the dishes.

46. The best title of the passage is ________.

　　　 A. Money Makes You Happy　　　　　　　　　　　　　　 B. The Secrets of Happiness

　　　 C. Ideas for Helping Other People to Be Happy　 D. Good Friends Make You Happy

47．The second paragraph tells us that ________.

　　　 A. the more friends you have, the happier you will be

　　　 B. we shouldn’t think about our future

　　　 C. happiness is to enjoy the simple things in life.

　　　 D. some people fail to live a happy life

48．The passage gives us ________ pieces of advice on happiness.

　　　 A. one　　　　　　　　　　　　 B. two　　　　　　　　　　　　 C. three　　　　　　　　　　　 D. four

49．The writer thinks that ________.

　　　 A. everyone knows how to live a happier life　　　

　　　 B. it’s wrong to spend time on work

　　　 C. hobbies take up too much time　　　　　　　　　　

　　　 D. doing good things for someone can make you happier

50．Which of the following is not mentioned in the passage?

　　　 A. Reading a good book. B. Traveling to a foreign country.

　　　 C. Playing a sport. D. Spending time with close friends.

Miracles（奇迹）will happen if you don't give up trying. Even if you have 31 for one hundred times, you may succeed when you try for the 10lst time.

　 When I was born, my doctor told my mother that there was something wrong with my 32 . They were too soft to be able to walk. Although the news was bad, my mother didn't become 33 . She didn't believe what the doctor said 34 started to look for other ways.

My mother kept looking for other doctors for me, and finally she 35 . The doctor and his team in the hospital did 　36 they could to help me. They also asked my parents to teach me to do some 37 to help me walk. One day when my mother came to pick me 38　 . I crawled(爬) towards her. She was so surprised and happy that she couldn't believe 39　 eyes. Crawling was not walking, but it was a good 40 . Day by day, I could walk by myself.

　 When I grew up, my mother　 41　 told me these stories. She said that if I thought of what she said whenever I met 　42 , I could do anything successfully. I have been working hard and I have turned out to be a very　 43　 person. I get best　 44 in school and I am a good dancer and swimmer.　 45　 my mother's strong resolution, I live a happy life now. What the story tells us, as my mother always says, is: Never give up.

31. A. achieved　　 　　　　　 B. failed　　　 　　　　　 C. suggested　 　　　　 D. told

32. A. legs　　　 　　　　　　　 B. hands　　　 　　　　 C. arms　　　　 　　　 D. eyes

33. A. patient　　 　　　　　　　 B. confident　　 　　　　 C. frustrated　　 　　　 D. proud

34. A. or　　　　 　　　　　　 B. and　　　　 　　　　 C. if　　　　　 　　　 D. because

35. A. forgot　　 　　　　　　 B. changed　　 　　　　　 C. succeeded　　 　　　　　　 D. worked

36. A. nothing　　 　　　　　　 B. somewhere　 　　　　 C. anywhere　　 　　　 D. everything

37. A. time　　　 　　　　　　 B. exercise　　 　　　　　 C. medicine　　 　　　 D. shopping

38. A. away　　　 　　　　　 B. from　　　 　　　　　 C. into　　　　 　　　 D. up

39. A. her　　　　 　　　　　 B. my　　　　 　　　　　 C. his　　　　　 　　　 D. its

40. A. advice　　　 　　　　　 B. end　　　 　　　　　 C. chance　　　 　　　　　　 D. start

41. A. hardly　　　 　　　　　 B. never　　　 　　　　　 C. always　　　 　　　　　　 D. nearly

42. A. dreams　　 　　　　　 B. experiments 　　　　　 C. jobs　　　　 　　　 D. difficulties

43. A. excellent　　 　　　　　 B. dangerous　 　　　　　 C. busy　　　　 　　　 D. special

44. A. presents　　 　　　　 B. friends　　 　　　　　 C. books　　　 　　　 D. grades

45. A. According to B. Instead of C. Thanks to　　 　　　 D. Together with

 —Excuse me, Could you please help me clean the classroom?

— _________.

A. No, I couldn’t.       B. It doesn’t matter.  C. With pleasure.          D. Don’t mention it.

—It seems that Alice never wants to do anything except drawing pictures.

—Right. That's what she likes to do ______.

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

 Jane said she would come here ______9:00 and 9:30 tomorrow morning.

A. from                  B. at            C. between             D. around

______wonderful news report she wrote! All of us are proud of her.

A. What                     B. What a         C. How                 D. How a

— The weather yesterday wasn’t bad, was it?

— ________. At least it didn’t rain.

A. No, it wasn’t 　　　　　 B. Yes, it wasn’t C. Yes, it was 　　 　　 D. No, it was

—Who is singing in the next room?　

— It _____ be Lucy. She has gone to Hong Kong.

A. can’t　　　　 　　　　　 B. must　　　　 C. may not　　　　　 D. needn’t

—What should I do, doctor?　

—______healthy, you should take more exercise.

A. To keep　　　 　　　　 B. Keep　　 　　　 C. Keeping　　　　　 D. Kept