作为即将签订的向Arktic研究实验室提供管理服务的合同提出的建议的一部分，你必须提供有关以前经验的信息，以证明你们公司有做这种项工作的专长和成就。你们公司最近履行了一项为Arktic的主要竞争者之一的Polar调查有限公司提供类似服务的合同。该合同要求你们对客户信息保密一年。你一名PM成员，是提案管理人。Arktic发现你与Polar协作，因此正在Polar公司寻找推荐人，同他讨论你的工作。你知道，Arktic将对你与Polar的合同留下深刻印象，并希望Polar利用作为参照。如果你中标，老板也表示你和你的一位Arktic朋友可以去梦中之地旅游一周，全部费用由公司支付。你写建议时会感觉到头绪很多!在这种情况下，你应当（）

A:向Arktic提供Polar参照。总之，Arktic从局外人士那里得知你在Polar的工作情况，因此使你从合同的保密条款解脱出来 B:把Polar作为参照包括在内，假定保密协议是不必要的贸易限制 C:与Polar联系，让它知道，如果你利用它作为参照，你将让它知道你将为Arktic所做的工作类型，从而使谁都不处于竞争劣势 D:与Polar联系，要求允许在你的建议中把它列为参照

As the world’s largest terrestrial carnivore(陆地食肉动物), the polar bear is the king of the great white north. Adult males can measure more than 9 feet in length and weigh between 770 and 1430 pounds. The polar bear has a strong body while their heads are narrow with small, rounded ears.

Polar bears can be found in northern Canada, Greenland, Norway and Russia, and there have been reports that polar bear tracks have been found as far north as the North PolE. The 5 000 000-square-mile range of the polar bear circles the Arctic and contains pieces of open water where seals are easily caught.

Polar bears live on the annual Arctic sea ice that provides a platform from which they can hunt. They hunt seals on the sea ice by breaking into seal dens in the sea icE. The dens aren’t visible from above, but seeing is less important than smelling to a polar bear----with their sharp sense of smell, polar bears can sense the breathing holes of seals in their dens beneath the snow and icE. As the southern edge of the Arctic ice cap melts in summer, polar bears are forced to stay on land and spend their summers fasting(禁食), living off body fat stored from hunting in spring and winter.

With about 22 000 polar bears living in the wild, the species is not endangered at the moment, but its future is far from certain. Climate change is causing the disappearance of sea ice from which polar bears hunt seals. Sea ice in the Arctic is melting earlier and forming later each year. People have reached an agreement that controls the hunting of polar bears and directs each nation to protect their habitats, but it does not protect the bears against the biggest man-made threat to their survival: global warming. If current warming trends continue, scientists believe that polar bears may disappear within 100 years.

4. Polar bears search fro seals mainly through their ________.

A. eyes B. ears C. noses D. necks

5. The underlined word “dens” in paragraph 3 most probably means” _______”.

A. the skin of the wild animals B. the home of wild animals

C. the breathing hole of seals D. water of the deep sea

6. Which of the following statements is true?

A.A.polar bear measures at least 9 feet long.

B. Polar bears can be found in both the North Pole and the South polE.

C. Polar bears stop hunting in summer because seals are hidden at that timE.

D. Polar bears may die out as a result of climate changE.

Polar bears are suffering in a 61 (warm) world than ever beforE.

Polar bears live in environments too cold for most animals. 62 much of the year, they live and hunt on the frozen Arctic sea icE. Nature has prepared 63 for the cold conditions. But nothing has prepared the bears for the danger that 64 (threat) the only home they know.

The polar bears’ world is melting. Studies show that the polar ice has reduced by 9.8% every 10 years 65 1978. Now about 20,000 to 25,000 polar bears live in the ArctiC. Polar bears depend on the sea ice for their 66 (survive). “The sea ice is more than just this platform that the bears walk over,” says Andrew Derocher, 67 scientist who studies North American polar bear populations. “ 68 it, they can’t exist.”

Some melting and refreezing of the polar ice is natural. 69 in a warmer world, these cycles speed up, and bears have less time to hunt. Normally, they have three months in the spring when they gain more weight. The extra fat is used later, 70 the bears are not actively hunting.

61. warmer   句中出现than，要用比较级。

62. During  during much of the year 在一年的大多数时候

63. them   讲的是Polar bears ，这里需要用宾格them。

64. threatens  that引导的定语从句，缺少谓语，要用threat的动词threaten, 主语是danger，要用threatens。 

65. since   since+点时间，用现在完成时。

66. survival  their修饰名词。

67. a  单数名词前，表泛指，用a。

68. Without 没有冰，他们无法生存。

69. But   一些极地冰的融化和重新冻结是很自然的，但是在一个更暖和的世界,这些周期加快了。

70. when当熊不积极打猎时，这些额外的脂肪就会被用掉。

Polar bears are suffering in a 61 (warm) worlD.

Polar bears live in environments too cold for most animals. 62 much of the year, they live and hunt on the frozen Arctic sea icE. Nature has prepared 63 for the cold conditions. But nothing has prepared the bears for the danger that 64 (threat)the only home they know.

The polar bears’ world is melting. Studies show that the polar ice has reduced by 9.8% every 10 years 65 1978. Now about 20,000 to 25,000 polar bears live in the ArctiC. Polar bears depend on the sea ice for their 66 (survive). “The sea ice is more than just this platform that the bears walk over,” says Andrew Derocher, 67 scientist who studies North American polar bear populations. “ 68 it, they can’t exist.”

Some melting and refreezing of the polar ice is natural. 69 in a warmer world, these cycles speed up, and bears have less time to hunt. Normally, they have three months in the spring when they gain more weight. The extra fat is used later, 70 the bears are not actively hunting.

61. warmer    62. For/ During    63. them    64. threatens   65. since

66. survival   67. a     68. Without    69. But         70. when

Polar bears are suffering in a 46 (warm) world than ever beforE.

Polar bears live in environments too cold for most animals. 47 much of the year, they live and hunt on the frozen Arctic sea icE. Nature has prepared 48 for the cold conditions. But nothing has prepared the bears 49 the danger that threatens the only home they know.

The polar bears’ world is melting. Studies show that the polar ice has reduced by 9.8% every 10 years 50 1978. Now about 20,000 to 25,000 polar bears live in the ArctiC. Polar bears depend on the sea ice for their 51 (survive). “The sea ice is more than just this platform that the bears walk over,” says Andrew Derocher, 52 scientist who studies North American polar bear populations. “ 53 it, they can’t exist.”

Some melting and refreezing of the polar ice is natural. 54 in a warmer world, these cycles speed up, and bears have less time to hunt. Normally, they have three months in the spring when they gain more weight. The extra fat is used later, 55 the bears are not actively hunting.

46.warmer   47.For/During   48.them    49.for    50.since

 51.survival  52.a     53.Without     54.But     55.when

Polar bears are suffering in a 41 (warm) world than ever beforE.

Polar bears live in environments too cold for most animals. 42 much of the year, they live and hunt on the frozen Arctic sea icE. Nature has prepared 43 for the cold conditions. But nothing has prepared the bears for the danger that 44 (threat) the only home they know.

The polar bears’ world is melting. Studies show that the polar ice has reduced by 9.8% every 10 years 45 1978. Now about 20,000 to 25,000 polar bears live in the ArctiC. Polar bears depend on the sea ice for their 46 (survive). “The sea ice is more than just this platform that the bears walk over,” says Andrew Derocher, 47 scientist who studies North American polar bear populations. “ 48 it, they can’t exist.”

Some melting and refreezing of the polar ice is natural. 49 in a warmer world, these cycles speed up, and bears have less time to hunt. Normally, they have three months in the spring when they gain more weight. The extra fat is used later, 50 the bears are not actively hunting.

1.write  2.many—much  3.anything--everything 4.my—a   5.去掉should    6.talk--talking 

7.me--myself    8.to前加it    9.reads--read   10.word—words

Polar bears are suffering in a 33 (warm) world than ever beforE. Polar bears live in environments too cold for most animals. 34 much of the year, they live and hunt on the frozen Arctic sea icE. Nature has prepared 35 for the cold conditions. But nothing has prepared the bears for the danger that 36 (threat) the only home they know. The polar bears’ world is melting. Studies show that the polar ice has reduced by 9.8% every 10 years 37 1978. Now about 20,000 to 25,000 polar bears live in the ArctiC. Polar bears depend on the sea ice for their 38 (survive). “The sea ice is more than just this platform that the bears walk over,” says Andrew Derocher, 39 scientist who studies North American polar bear populations. “ 40 it, they can’t exist.” Some melting and refreezing of the polar ice is natural. 41 in a warmer world, these cycles speed up, and bears have less time to hunt. Normally, they have three months in the spring when they gain more weight. The extra fat is used later, 42 the bears are not actively hunting.

33. warmer      34. For/During     35. them         36. threatens      37.  since

38. survival      39. a             40. Without       41. But          42.     when

阅读下面短文，根据其内容写一篇60词左右的内容概要。

With global warming and melting ice, it isn’t easy being a polar bear anymorE. Some studies have predicted that polar bears could die out by the end of the century. The good news is not all researchers think the bears are absolutely disappearing. Scientists at the American Museum of Natural History (AMNH) have published a new paper indicating that things might not be as bad for polar bears as some scientists expect.

To understand the reason for the researchers’ cautious optimism, we must first understand the factors that are threatening the polar bear’s existencE. Polar bears consume a diet of mainly young seals. In order to hunt these seals, polar bears need to rest at the top of sea ice---the same ice that is increasingly melting for most of the year thanks to climate changE. In another 50 years, experts expect that the Arctic will be too warm for sea ice to form for half of the year, leaving polar bears without a reliable food source and in serious danger of starvation.

As it turns out, alternative food sources for the polar bears aren’t completely out of the question. For as long as biologists have tailed after the animals, they’ve seen polar bears eating animals found on land like caribou(驯鹿) and snow geese---as well as the snow geese’s eggs.

Can polar bears actually survive off these alternative food sources for long periods of time? To figure this out, researchers calculated the nutrients that a caribou and snow geese diet would providE. They found that even adult male polar bears would be able to obtain more calories than they would burn in hunting these meals. Moreover, the food would provide the food necessary to avoid starvation during the summer months.

Unfortunately, not all polar bears have tended to seek food on lanD. That said, the researchers expect that necessity would push more polar bears to hunt on land to avoid starvation. They also expect that the bears could learn from their fellow bears how to hunt on land until the practice becomes second naturE.

_________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

With global warming and melting ice, some scientists think that polar bears could die out by the end of the century. However, other scientists think that polar bears could die out by the end of the century. However, other scientists don’t think so. They have found polar bars have found alternative food sources and they can survive by hunting animals on land instead of your seals. The researchers expect all polar bears learn how to hunt on land to avoid starvation.

Polar bears are one of the most popular animals for peoplE. Polar bears are different from every other bear in the worlD. This is because polar bears have white fur. However, there are many facts about polar bears that people might not be aware of .年

The skin of polar bears is black, which according to thinkquest.org allows them to absorb more heat from the sun. Polar bear fur is transparent , because it is made up of hollow guard hairs. LoC.gov explains that the reason polar bears display white fur is that when the sun hits the fur ,the hollow spaces in the hair scatter the light. Since none of the light is absorbed, the light reflected back appears white to human eyes.

Polar bears’ conservation status is considered close to extinction. Global warming is considered the main cause of the decline in polar population. Polar bears use ice floats to hunt for their fooD. However, these ice floats are melting so polar bears are starting to drown in the search for food ,and the food is becoming more difficult to get. Contrary to popular belief, polar bears do not eat penguins ,because polar bears are not found in the Antarctic region of the worlD. Polar bears are only found around the Arctic CirclE. Polar bears do not drink water. They get all the water they need from the prey they eat.

FES. Gov specifies that polar bears are considered the largest land carnivores(食肉动物) in the worlD. The polar bear weight ranges between 700--1,500 pounds. Since the polar bear habitat is melting away, their main evolutionary advantages are fading. Polar bears are not able to use their camouflage(伪装) to find prey in habitats not covered with snow. Polar bears do not hibernate(冬眠). However, when the weather gets uncomfortable, or mothers give birth, polar bears will dig themselves a hidden homE.

What can we do to help save the polar bears? We can donate to organizations like the World Wildlife Fund, reduce our carbon footprint, and send letters to politicians explaining to them that we need to set up more preserves to help save the polar bear habitat.

12. What do we know about the fur of the polar bears?

A. It absorbs more heat from the sun.

B. It is black and hollow.

C. Light can pass through it.

D. It is white actually.

13. What does “main evolutionary advantages” in Paragraph 4 refer to？

A. Hibernation habit B. The function of their fur

C. Eating meat D. Their weight

14. What do we know from the passage?

A. Polar bears face danger due to the melting of ice floats.

B. The biggest polar bears weigh about 1,000 pounds.

C. Polar bears never hibernate and do not need water.

D. Polar bears are the largest carnivores in the worlD.

15. Which of the following ways is NOT the measure used to protect polar bears according to the passage?

A. Donating to wildlife conservation organizations.

B. Trying our best to reduce greenhouse gases.

C. Writing letters to make people protect polar bears.

D. Setting up more polar bear conservation organizations.