As far as I concerned, the program called “Zhengdazongyi” | 76. |
on channel two every Saturday evening was my favorite program. | 77 . |
As the airing time drawing near , you will find me sitting in front of | 78 . |
the screen waiting for the program. In fact, not only do I interested in it, | 79. |
and many of my classmates like it as well. | 80 . |
Unlike many other programs, “Zhengdazongyi” is rich in contents. | 81. |
The first part is always a contest in that famous people are asked | 82. |
to answer some questions . And finally an exciting film is put up | 83. |
to make us relax after five days of hard work. . | 84. |
Maybe you’ll ask why I am so attracted to such a program. Well, | 85. |
the most important reason is that I can gain a plenty of knowledge | 86. |
that is not available in my schoolbooks. |
Endless treaties to cut carbon emissions and halt global warming have failed to turn the tide of pollution. Now scientists want to reshape our sea and skies to save the world from climate change.
Here are five important geo-engineering ideas that could change the face of the Earth. Realistic or not ? You decide.
Synthetic trees Living trees absorb carbon dioxide slowly. Scientists are proposing to build synthetic trees, which would not grow of produce leaves，but absorb carbon dioxide. One synthetic tree would remove about 90，000 tons of carbon dioxide in a year-the output of more than 15,000 cars and a thousand-fold improvement on the natural behavior of a real living tree. Carbon sequestration(隔离)technology is likely to play a major role in the battle against climate change. But critics say that engineers could end up using more energy in making the synthetic trees than they would save. |
Sea grass Blooms of plankton are the grasslands of the oceans. They absorb carbon dioxide, die and then sink to the seabed carrying the carbon dioxide they absorbed during their lifetimes. Increase such blooms and you could take out more carbon dioxide from the atmosphere, scientists argue. The favored method for stimulating plankton growth is to use iron fertilizers. Several groups of US entrepreneurs have begun experiments pumping iron compounds(化合物)into the sea. But some critics warn that the iron compounds added to the sea might cause serious pollution. |
Cloud shield Before reaching the Earth, part of the incoming solar radiation is reflected by the clouds in the sky. As the Earth warms up, scientists plan to spray seawater into the sky to increase cloud cover. It's estimated that in this way cloud cover can increase by 4 percent-enough to shield the Earth from solar radiation. This plan is cheap and relatively low-tech. But scientists say this could cause other dangers, such as changing weather patterns. |
Ocean pumps Cold ocean water contains more life forms than warmer water. Such creatures could help absorb CO2. SO scientists plan t pump cold ocean water from the deep sea up to the surface. The life forms in cold water would absorb CO2, die and then sink to the seabed, storing the carbon away for thousands of years. Biologists say the scheme could threaten sea life, in particular whales and porpoises（海豚）. |
Mirrors Besides making clouds, scientists are trying other ways to block the sun's radiation. One of the most ambitious ideas involves firing giant mirrors into orbit. The special high-tech mirrors would filter infrared radiation. But such a process would be extremely expensive. To produce a 1 percent cut in solar radiation, scientists would have to install a total mirror surface area of 600,000 square miles. |
64. The word “shield” underlined in this article is least likely to be replaced by .
A. guard B. protect C. prevent D. defend
65. From the above, which statement is not true?
A. Synthetic trees would not grow or produce leaves
B. Scientists have been trying to save the world from climate change
C. The plan of cloud shield is cheap and relatively low-tech
D. Warmer ocean contains more life forms than cold water
66. From the view of reducing pollution, which is the realistic choice used to save us?
A. Synthetic trees B. Ocean pumps
C. Sea grass D. Mirrors
67. Of the five idea，which seems more ambitious and absurd from the aspect of cost?
A. Mirrors B. Cloud shield C. Sea grass D. Synthetic trees
Gifts Grow on This Tree
After so many wonderful summers, it was my rainy season when is seemed that I couldn't feel the sun's warmth on my face.
In July, I felt 36 as I watched my beloved niece succumb to （屈服）breast cancer 37 fighting for two years. Ten days later, a tiny bit of hope 38 when I witnessed my first grandson burst into the world. Three days after his birth, my tears of joy turned to 39 of sorrow when a younger brother died suddenly in an accident.
In order to cope with the sadness, I needed to feel that heaven was 40 too. 41 in this rainy season, I refused to go out of my own backyard. It was at that time that I noticed that the apple tree had grown up. It was easy to 42 the apple tree for granted, 43 it has been there when we bought the house about 15 years ago. And I once doubted seriously 44 it would survive for the three growing kids and a dog. 45 , we had no expectations. Far as we knew, the tree would never produce 46 crab(酸) apples.
We were wrong. The birds 47 them first and flew away with the ones that fell. And what made me surprised most is 48 I found a lot of red, shining apples on the top of the tree. Afterwards, fascinated by the apple tree, I always looked at it 49 wonder. Where had I been so that I hadn't noticed its 50 over the years? Why was I always so busy that I didn't 51 the simple beauty? Without any help from me, these apples found their way.
All too often, that is the way our lives go. Even in summer, we are often 52 busy rushing here and there to really enjoy the special 53 that surround us.
With the sun on my face, I 54 a basket of apples like a farm girl and baked apple pies and 55 them to my joyful granddaughters. They were excited at the apples from the tree.
A lot of the sadness disappeared that afternoon.
36. A. valueless | B. hopeless | C. careless | D. thoughtless |
37. A. after | B. before | C. until | D. during |
38. A. backed | B. back | C. went | D. returned |
39. A. sadness | B. eyes | C. tears | D. laughter |
40. A. laughing | B. smiling | C. shinning | D. crying |
41. A. Missing | B. Lost | C. Gone | D. Lying |
42. A. take | B. make | C. set | D. put |
43. A. while | B. if | C. when | D. for |
44. A. which | B. that | C. whether | D. as if |
45. A. What's worse | B. Therefore | C. However | D. Somehow |
46. A. anything but | B. nothing but | C. only | D. except |
47. A. sought | B. searched | C. discovered | D. found out |
48. A. that | B. / | C. why | D. which |
49. A. of | B. no | C. for | D. in |
50. A. color | B. growth | C. form | D. develop |
51. A. employ | B. appreciate | C. experience | D. understand |
52. A. so | B. much | C. too | D. such |
53. A. gifts | B. lessons | C. talents | D. expectations |
54. A. picked up | B. took | C. brought up | D. picked |
55. A. cooked | B. served | C. prepared | D. let |