阅读下面材料，在空白处填入适当的内容（1个单词）或括号内单词的正确形式。Polar bears live in such environment that is-组卷网

题型：语法填空-短文语填难度：0.65 引用次数：79 题号：13041259

阅读下面材料，在空白处填入适当的内容（1个单词）或括号内单词的正确形式。

Polar bears live in such environment that is too cold for most animals. For much of the year, they live and hunt on the 1 (freeze) Arctic sea ice. Nature has prepared them for the cold conditions but nothing has prepared them for the danger 2 threatens their only home.

Polar bears’ world is melting. Polar bears 3 (suffer) in a warmer world are in danger. Studies show that the polar ice 4 (reduce) by 9.8% every ten years since 1978. At present, about 20,000 to 25,000 polar bears live in the Arctic. Polar bears depend on the sea ice for their 5 (survive). “The sea ice is more than just the platform that the bears walk 6 .” says Andrew Derocker, who studies North American polar bear population. “Without it, they can’t exist.”

Some melting and refreezing of the polar ice is nature. But in 7 warmer world, these cycles speed up, and bears have 8 (little) to hunt. 9 (normal), they have three months in the spring when they gain more weight and the extra fat 10 (use) later, when the bears are not actively hunting. Therefore, it’s urgent to protect the environment and maintain the ecological balance.

2021·四川凉山·三模查看更多[1]

更新时间：2021-05-25 21:37:24 |

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【知识点】环境保护

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【推荐1】阅读下面短文,在空白处填入1个适当的单词或括号内单词的正确形式。

Shennongjia is 1 household name in China because it’s the home of the legendary “wild man”. Its folk tale spans the generations.

Between 1976 and 1981, the Chinese Academy of Sciences organized three large-scale 2 (science) investigations. They have collected hair, footprints and waste suspected of 3 (belong) to a “wild man”, but some experts argue that most were the result of bears, monkeys or even human beings. They failed 4 (uncover) the myth of “wild man”, but discovered the area’s rich biodiversity. Although several hundred people have claimed 5 (they) as eyewitnesses of some giant apelike creatures in Shennongjia, there is no tangible (真实的) evidence to confirm the 6 (exist) of a “wild man”.

Nowadays, Shennongjia’s attraction is not 7 (mere) about “wild man”. Its appeal is more about its lively ecology, rich biodiversity and karst landforms (喀斯特地貌). Shennongjia’s beauty varies over the year as nature takes its course. Tourists can enjoy flower blossoms in spring, be shaded from the summer heat, appreciate red leaves in autumn 8 go skiing in winter.

The “wild man” legend has been passed on for generations by word-of-mouth. In 2016, the legend of “wild man” in Shennongjia 9 (add) to Hubei Province’s intangible cultural heritage list. Today, tourists can visit Wild Man Cave, 10 eyewitnesses claimed that they spotted the creatures, and see “wild man” sculptures.

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Forests of longleaf pine trees once covered two-thirds of the southeastern US. About 95% of those forests 1 （cut）since the beginning of the last century. But now these forests are returning.

The wood of the tree is very strong. Most buildings in the southern US used to contain longleaf pine wood. Today, after longleaf pine is no 2 （long） wanted to build houses, people are reusing the wood because it’s still good and resists water and insect damage. The tree is also 3 （value）to the environment since it stores CO₂ in its wood.

The US government has several programs to protect and expand longleaf pine forests, one of 4 is the Safe Harbor Program. 5 uses voluntary agreements with private landowners 6 （help）endangered animals. Now, farmers and landowners 7 （live）in the southeastern US are growing new longleaf pine trees. Instead of cutting the trees 8 wood, they are finding ways to make money from the forest of trees. One way is by selling the 9 （leaf）or needles of the trees as a ground cover. Another way is to sell hunting rights. Hunting wild pigs 10 （be） a popular sport in the southern US and the fight to hunt on land can cost from $200 to $1,000 a day.

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Currently，news has it 1 some major cities in China are setting about pushing "waste sorting"， 2 the purpose of both reforming the traditional waste treatment and improving this fragile environment we live in. What 3 encouraging change！ 4 （compare）with the traditional way of collecting waste，the new method has brought with it a variety of benefits. First and foremost，wastes 5 （send） to different factories according to their classification rather than landfills（垃圾填埋地），where they would be simply burnt and buried. What's more，waste classification not only cuts the spending on treating waste， 6 brings some interest. Recyclable wastes，such as paper，glass and plastic，can be reused after 7 （process）in related factories，while other wastes can be turned into the valuable. In a word. waste classification is both significant and necessary to environmental protection as well as our life.

From my point of view，waste classification should be 8 （far）promoted as an effective means of environmental protection. As students，we are supposed to obey related regulations，sorting wastes 9 we throw them away. Meanwhile，it 10 （be）rather beneficial if we could influence as many people around us as possible.

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