Special trees that grow faster, fight pollution, produce better wood, and even sense chemical attacks are being planted by scientists in the
When 40 percent of Hawaii's US$14 million-a-year papaya (木瓜)industry was destroyed by a virus five years ago, work began on creating genetically engineered (转基因的) trees.
Researchers successfully introduced seeds that were designed to resist the virus. Since then, more and more people have been testing genetically engineered trees.
Some researchers put special bacteria into trees to help them grow faster and produce better wood. Others are trying to create trees that can clean polluted soil.
Meanwhile fruit farmers are looking for trees that are strong enough to resist worms, and paper companies want trees that produce more wood and therefore more paper.
The Pentagon (五角大楼) even gave the researchers US$500,000 this year after they developed a pine tree that changes its colours if it senses a chemical attack.
So far, the poplar, eucalyptus (杨树与桉树), apple and coffee trees are among those being engineered. All this can be done today because we have a better understanding of tree genomes (基因组).
However, some people fear that the genetically engineered trees will cause dangerous results. They are worried that the new trees will breed (繁殖)with natural species and change the balance of the forest environment.
"It could be destructive," said Jim Diamond, an environmentalist. '"Trees are what is left of our natural environment and home to many endangered species."
But researchers insist that science could give nature a fighting chance against both natural and man-made dangers.
They hope to answer the critics (批评家)by stopping the new trees from breeding, so their effect on the environment can be controlled.
68. Which kind of tree is not the ones that scientists are planting in the
A. Trees that worms can't hurt.
B. Trees that can sense a chemical attack.
C. Trees that can resist wind better.
D. Genetically engineered trees.
69. What caused the American scientists to work on special trees directly?
A. They think science could give nature a fighting chance against both natural and man-made dangers.
B. Great numbers of trees have been lost due to attacks by viruses.
C. Researchers successfully introduced seeds designed to resist the virus.
D. Tree genomes are mapped out so scientists know how to improve trees.
70. Which of the following was probably the first kind of trees being engineered?
A. Papaya. B. Pine. C. Apple. D. Poplar.
71. Why did critics think engineered trees dangerous? Because _________.
A. these trees can destroy the balance of nature
B. everything except trees has been genetically engineered
C. trees are home to many endangered species
D. these trees may affect normal trees
科目:高中英语 来源:高考三人行·英语 题型:014
These bears feed ________ the leaves of this special tree.
[ ]
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科目:高中英语 来源: 题型:阅读理解
(10·全国ⅡD篇)
Coolest Hotels in the World
Ariau Amazon Towers
The Ariau Amazon Towers hotel lets you sleep in a tree house. Eight towers make up this hotel that offers over 300 rooms. If you really want to get into the spirit, book the Tarzan suit which is large enough for a big family. You’ll be thirty feet up in the air and can travel between the towers through their wooden walkways.
Prices, starting at $300 one night for each person for a regular room and going all the way up to$3000 for the Tarzan Suite.
For more information, visit the website:http://www.ariautowers.com
The Ice Hotel
Every winter in Jukkasjarvi, Sweden kind of hotel called the Ice Hotel is built. Each year,world-famous artists are invited to design and produce works of art from the ice, many of which can be found in the rooms. You’ll have your choice between hot or cold romms,but you will be well advised to stay at least one night in a cold room for a true experience.
Prices: starting at $318 one night for each person for either a cold room or a warm one.
For more information, visit the website:http://www.icehotel.com
Propeller Island
Propeller Island City Lodge is a very special hotel that was designed by a German tist. Each room provides you with the promibility of living in a work of art. Every single piece of furmiture in the thirty rooms of the hotel has been hand-made and each room is completely different. You’ll be able to choose a room based on your own personal tastes.
Prices:starting at just $91 a night,and an additional person for only 20 extra dollars.
For more information , visit the website:http://www.propeller island.com
For information about other cool hotels in the world ,visit the website:
http://www.bahamabeachclub.com
54.What is special about the Ariau Amazon Towers hotel?
A.You can sleep in the houses B.You can choose any of the towers
C.It is designed for big families D.Every room has a walkway
55.For two persons spending a night in one of these hotels,they have to pay at least
A.$111 B.$182 C.$600 D.$636
56.Which website should you visit if you want to find out whether there exists a hotel the sea?
A.http://www.icehotel.com B.http://www.ariautowers.com
C.http://www .propeller-island.com D.http://www.bahamabeachclub.com
57.Which hotel would invite artists to come to work every year?
A.Propeller Island City Lodge B.Ariau Amazon Towers
C.The Ice Hotel D.Bahama Beach Club
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科目:高中英语 来源:福建省厦门双十中学2010届高三热身考试(英语) 题型:阅读理解
Special trees that grow faster, fight pollution, produce better wood, and even sense chemical attacks are being planted by scientists in the US.
When 40 per cent of Hawaii's US$14 million-a-year papaya (木瓜)industry was destroyed by a virus five years ago, work began on creating genetically engineered(转基因的)trees.
Researchers successfully introduced seeds that were designed to resist the virus.Since then, more and more people have been testing genetically engineered trees.Some researchers put special bacteria into trees to help them grow faster and produce better wood.Others are trying to create trees that can clean polluted soil.Meanwhile fruit farmers are looking for trees that are strong enough to resist worms, and paper companies want trees that produce more wood and therefore more paper.
The Pentagon (五角大楼) even gave the researchers US$500,000 this year after they developed a pine tree that changes its colours if it senses a chemical attack.So far, the poplar, eucalyptus (杨树与桉树), apple and coffee trees are among those being engineered.All this can be done today because we have a better understanding of tree genomes (基因组).
However, some people fear that the genetically engineered trees will cause dangerous results.They are worried that the new trees will breed with natural species and change the balance of the forest environment.
“It could be destructive,” said Jim Diamond, an environmentalist. “Trees are what is left of our natural environment and home to many endangered species.”
But researchers insist that science could give nature a fighting chance against both natural and man-made dangers.They hope to answer the critics by stopping the new trees from breeding, so their effect on the environment can be controlled.
63.Which kind of tree is not the ones that scientists are planting in the US?
A.Trees that worms can't hurt.
B.Genetically engineered trees.
C.Trees that can resist wind better.
D.Trees that can protect themselves at a chemical attack.
64.What caused the American scientists to work on special trees?
A.Tree genomes are mapped out so scientists know how to improve trees.
B.Great numbers of trees have been lost due to attacks by viruses.
C.Researchers successfully introduced seeds designed to resist the virus.
D.They think science could give nature a fighting chance against both natural and man-made dangers.
65.Which of the following was probably the first kind of trees being engineered?
A.Papaya. B.Pine. C.Apple. D.Poplar.
66.Why did critics think engineered trees dangerous? Because ________.
A.these trees can destroy the balance of nature
B.everything except trees has been genetically engineered
C.trees are home to many endangered species
D.these trees may affect normal trees
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科目:高中英语 来源:河南省唐河三高2009-2010学年高一下学期期末模拟试题(英语) 题型:阅读理解
Do you know why different animals or pests have their special colours? Colours in them seem to be used mainly to protect themselves.
Some birds like eating locusts. but birds cannot easily catch them. Why? It is because locusts change their colours together with the change of the colours of crops. When crops are green, locusts look green. But as the harvest time comes, locusts change to the same brown colour as crops have. Some other pests with different colours from plants are easily found and eaten by others. So they have to hide themselves for lives and appear only at night.
If you study the animal life, you'll find the main use of colouring is protecting themselves. Bears, lions and other animals move quietly through forests. They cannot be seen by hunters. This is because they have the colours much like the tree.
Have you ever noticed an even more strange act? A kind of fish in the sea can send out a kind of very black liquid when it faces danger. While the liquid spread over, the enemies cannot find it. And it immediately swims away. So it has lived up to now though it isn't strong at all.
1. From the passage we learn that locusts ___ .
A. are small animals
B. are easily found by birds
C. are dangerous to their enemies
D. change their colours to protect themselves
2 How can pests with different colours from plants keep out of danger?
A. They run away quickly.
B. They colours much like their enemies.
C. They hide themselves in the day and appear at night.
D. They have to move quietly.
3. Bears and lions can keep safe because they ___ .
A. have the colours much like the trees B. move quickly
C. like brown and grey colours D. live in forests
4. Which is the best title for this passage?
A. The Change of Colours for Animals and Pests
B. Colours of Different Animals and Pests
C. The Main Use of Colours for Animals and Pests
D. Some Animals and Pests
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科目:高中英语 来源:江西省0910学年高二下学期期中(英语) 题型:完型填空
完形填空(共20小题;每小题1.5分,满分30分)
阅读下面短文,从短文后各题所给的四个选项(A、B、C和D)中,选出可以填入空白处的最佳选项。
Something happened today that made me realize how much love I have in my house and I am so thankful for it.
My husband used to work in a bank but during the crisis he 36 his job. The economy wasn’t good and he hadn’t many 37 to get another bank job. We were hoping and 38 that he would be offered a position.
He got a 39 and it brought us a feeling of 40 . We were able to 41 our mortgage(按揭贷款) and buy our groceries; but money was still very 42 , so he found another job 43 deliveries from Monday to Thursday.
He has been working so 44 that I wanted to make it an extra 45 Christmas this year. I wanted our house to be filled with 46 -I didn’t want anybody to be 47 this year. I finally got round to getting the Christmas tree out yesterday and I worked all day to make the house look 48 .
When my husband came home at 8 p.m. he looked 49 . Seeing the house he 50 the biggest smile, grabbed me and gave me a huge 51 . Then he apologized for not being able to help me. He said he knew it was hard on me because he didn’t get around and he was 52 that I had not complained.
He was apologizing for working so hard to feed us and keep a 53 over our heads! He was doing two jobs that made much less than his previous job and coming home exhausted. I had no 54 to tell him how much I LOVED him and how 55 I was of him and that he was such a great husband and father and provider for us.
With this amount of love in our house-we will always have more than “enough”!
36. A. resigned B. lost C. escaped D. improved
37. A. chances B. excuses C. plans D. disadvantages
38. A. crying B. praying C. waiting D. hesitating
39. A. opportunity B. job C. salary D. bank
40. A. pride B. loss C. danger D. wonder
41. A. enjoy B. spend C. expend D. pay
42. A. tight B. comfortable C. tough D. dirty
43. A. making B. producing C. creating D. puting
44. A. excitedly B. relaxed C. hard D. striking
45. A. special B. colorful C. regularly D. natural
46. A. energy B. company C. sunshine D. excitement
47. A. surprised B. charming C. confused D. alone
48. A. decorated B. festive C. splendid D. neat
49. A. lively B. exhausted C. humorous D. childish
50. A. broke into B. broke up C. broke down D. broke in
51. A. hug B. surprise C. suitcase D. glimpse
52. A. pitiful B. wonderful C. grateful D. graceful
53. A. secret B. roof C. smile D. faith
54. A. tears B. words C. feelings D. trusts
55. A. economical B. proud C. capable D. worth
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