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1、- 1 -课时作业课时作业 2 English around the world.阅读理解阅读理解Heavy snowfall and chilling temperatures of 30 do not stop criminals in northern Russia.Now police trying to maintain law in the region are struggling on their snowmobiles and want to use reindeer to combat crime on the bleak tundra(阴冷的冻土地带阴冷的冻土地带)The
2、y say that that mammals are more reliable than their machines and can run fast on deep snow thanks to their adaptable hooves.Some areas of the countrys Arctic region are only accessible by reindeer and the lzvestia newspaper has reported that a gang of Siberias indigenous(本土的本土的) people are using re
3、indeer to make a speedy get away from crime scenes, leaving police on snowmobiles behind.Russian police chasing the criminals told the newspaper that their snowmobiles can break down and run out of gasunlike reindeer.Irina Pimkina from the regions Interior said：“Of course we have snowmobiles in serv
4、ice, but one should understand that a machine is a machine.” “A snowmobile can break down or get stuck in the tundra, but the deer will run at all times.”The force believes that the animals will give them an edge in policing the remote area and they have been asking for reindeer recruits for two yea
5、rs.Reindeers hooves are unique because they adapt to seasonal weather conditions, Mother Nature Network reported.- 2 -When ground is soft in the summer, the bottoms of the animals hooves act like sponges to provide traction(牵引力牵引力)，while the rim(边边缘缘) of the hoof becomes exposed in the winter.This m
6、eans that they can cut into ice and snow to stop them from slipping. They even use them to dig down through hard snow so they can find their favorite fooda lichen known as reindeer moss.The vision of reindeer may also outperform a snowmobiles lights, because the animals can see ultraviolet light.Sno
7、w reflects up to 90 percent of UV light and this ability helps the animals to see clearly in dim lighting and landscapes that are largely white, where may objects blend unto the landscape.Things like fur and urine, for example, show up clearly in ultraviolet light, compared to what humans see.A stud
8、y by University College London(UCL) revealed in 2011 that reindeer can see light with wavelengths as short as 320 nanometers(nm), considerably below the human threshold of 400 nm.Researchers from the University of Troms discovered that the eyes of reindeer change color according to the seasons too.W
9、hile it may seem funny that policemen could use reindeer like a police car, the countrys navy already uses animals to enforce rules.The Russian Defense Ministry uses donkeys to patrol(巡逻巡逻) the countrys mountain ranges, while the Navy employed the help of dolphins to enable them to detect underwater
10、 mines.1Which one of the following statements is NOT the reason why police want to use reindeer to chase criminals on snow?ATheir hooves can stop them from slipping.BThey can see ultraviolet light.CTheir hooves act like sponges to provide traction.- 3 -DThey will run at all times.2What does the unde
11、rlined word “outperform” in Paragraph 11 mean?Aas strong as Bstronger thanCas good as Dbetter than3What does the last two paragraphs imply?AThe idea of using reindeer as a police car is funny.BThe idea of using animals to enforce rules is not new.CAnimals are cleverer than human beings.DDolphins can
12、 help detect underwater mines.4What does the passage mainly tell us?AMammals are more reliable than machines.BPolice in northern Russian want to use reindeer to fight against crime.CThe version of reindeer is better than man.DReindeers hooves can adapt to seasonal weather conditions.答案与解析答案与解析1C 细节理
13、解题。从第六段最后一句细节理解题。从第六段最后一句but the deer will run at all times.可知可知 D 项正确；从第十一小段项正确；从第十一小段because the animals can see ultraviolet light. 可知可知 B 项正确；从第九小段项正确；从第九小段 When ground is .act like sponges to provide traction(牵引力牵引力)可知可知 A 项正确。项正确。2D 词义猜测题。从画线后的词义猜测题。从画线后的 because the animals can see ultraviolet
14、 light 可知可知 D 项正确。项正确。3B 推理判断题。从最后两段内容可知推理判断题。从最后两段内容可知 B 项正确。项正确。4B 主旨大意题。从第二段主旨大意题。从第二段 Now police trying to maintain law in the region are.and want to use reindeer to combat crime.可知可知 B- 4 -项正确。项正确。.完形填空完形填空Joe Simpson and Simon Yates were the first people to climb the West Face of the Siula Gra
15、nde in the Andes mountains. They reached the top _1_， but on their way back conditions were very _2_. Joe fell and broke his leg. They both knew that if Simon _3_ alone, he would probably get back _4_. But Simon decided to risk his _5_ and try to lower Joe down the mountain on a rope(绳绳)As they _6_
16、down, the weather got worse. Then another _7_ occurred. They couldnt see or hear each other and, _8_， Simon lowered his friend over the edge of a precipice(峭壁峭壁). It was _9_for Joe to climb back or for Simon to pull him up. Joes _10_ was pulling Simon slowly towards the precipice. _11_， after more than an hour in the dark and the icy cold, Simon had to _12_. In tears,
