48. How many kinds of living things with body clocks are mentioned(提到) here?

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

49. In what way is the sand clock the same as the water clock in telling time?

A. Both of them have a neck

B. Both of them have two glass balls

C. Both of them can be used only once

D. Both of them give the time by quantity(数量)

50. The passage is mainly about .

A. man-made clocks B. nature's clocks

C. time and clock D. how people keep time

C

A sunflower is a sunflower. A mobile phone is a mobile phone. But can you combine the two to do something for your local environment? As early as next year it may well be possible. When you have finished with your mobile phone you will be able to bury(埋葬) it in the garden and wait for it to flower.

A biodegradable(生物可降解的) mobile phone was, this month, introduced by scientists. It is hoped that the new type of phone will encourage users to recycle. Scientists have come up with a new material over the last five years. It looks like any other plastic and can be hard or soft, and able to change shape. Overtime it can also break down into the soil without giving out any poisonous chemicals. British researchers used the new material to develop a phone cover that includes a sunflower seed (种子). When this new type of cover turns into waste, it forms nitrates(硝酸盐). These feed the seed and help the flower grow. Engineers have designed a small transparent(透明的) window to hold the seed. They have made sure it only grows when the phone is thrown away. “We've only put sunflower seeds into the cover so far. But we are working with scientists to find out which flowers would perform best. Maybe we could put roses in next time.” Said one scientist.

As phone technology is developing so quickly, people are constantly throwing their mobiles away. This means producers are under pressure(压力) to find ways of recycling them. Some 650 million mobile phones have been sold this year. Most of them will be thrown away within two years, adding plastic, heavy metal and chemical waste to the environment. A biodegradable cover can change this, according to the scientists.

51. After you have finished using the new type of mobile phone, .

A. the phone will do harm to the environment

B. the phone cover will break down easily in the soil you bury it

C. it will be recycled by the producers

D. it can be sent back to the shops

52. Which of the following is wrong about the cover of the new type of phone?

A. It can help the sunflower seed after the mobile phone breaks down

B. It looks like normal plastics but it can break down

C. It includes a sunflower seed

D. It makes sure the seed only grows after the phone is thrown away

53. The new type of phone can reduce the harm to the environment mainly .

A. because of the material of its cover

B. because of the sunflower seed

C. because it's made of no poisonous chemicals

D. because you bury it in the soil after you finish with it

54. This type of research is done because .

A. the technology that produces mobile phones is changing quickly

B. users are constantly throwing their mobiles away

C. nobody has ever thought of recycling mobile phones

D. producing mobile phones uses a lot of energy, so this has become a very big problem for the environment

55. We can guess from the story .

A. the new type of mobile phones is already on the market

B. the new type of mobile phones will sell very well

C. recycling mobile phones is not useful to the environment

D. other flowers may be used in the new type of mobile phones

五、单词拼写(单句首字母填空)(共5小题;共5分)

56. That's c (正确的).

57. My English teacher told us many good m to study.

58. Mrs. Smith went to travel with her daughter, so she reserved a d room in the hotel.

59. The firemen are so brave and I think they are f .

60. Her d about the wild animals will change people's traditional idea about their behaviors.

六、单词拼写(根据中文提示拼写单词)(共5小题;共5分)

61. Trees can weaken (力量) of the wind.

62. I bought some candles and m (火柴) on the way home.

63. --- Can I use your computer for a while?

--- (当然) you can.

64. Mr. Wang has a lovely (孙子).

65. With the (发展) of science, our country is becoming stronger and stronger.