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1、Unit 22 Environmental Protection Section Language Awareness & Culture Corner & Bulletin Board.单句语法填空1Not only _ I know her, but I was her best friend.2He said that the Christmas tree _(buy) soon.3You can easily get access _ the humorous old man.4He fixed his attention on _(listen) to the morning new
2、s.5At no time _ the country been more prosperous than at present.【答案】1.did2.would be bought3.to4listening5.has.单句改错1The naughty boy was made do his homework._2Not only the students but also the teacher like holidays._3The only access of the city is across the bridge._4My new house is painted now.【导学
3、号：62950026】_5These problems should have solved months ago._【答案】1.do前加to2.like改为likes3.of改为to4.is后加being5.have后加been.阅读理解Alaskas Arctic lakes now freeze later and melt earlier in the year than in 1950，leaving them easy to suffer water loss from evaporation(蒸发)and possibly adding to local warming, a n
4、ew study finds.The winter ice season near Barrow, Alaska, is shorter than in 1950, researchers reported Jan.30 in the journal The Cryosphere.Lake ice is also thinner each winter.The scientists surveyed 402 lakes on the North Slope，where permafrost (permanently frozen ground)and shallow lakes dominat
5、e the area.In 2011, the lake ice was 38 percent thinner than in 1950, and 22 percent fewer lakes froze through to their bottoms.“When we saw the actual numbers we were shocked at how dramatic the change has been，” lead study author Cristina Surdu, of the University of Waterloo in Canada，said in a st
6、atement.Surdu and her coauthors analyzed the changes in lakeice thickness and ice cover with satellite images and climate model simulations(satellite images are only available from 1991)The climate models suggest the Arctic lakes froze almost six days later and broke up about 18 days earlier in the
7、winter of 2011 compared with the winter of 1950.“The changes in ice and the shortened winter affect Northern communities that depend on ice roads to transport goods，”Surdu said.For example, every winter, oil companies build roads over frozen lakes to carry supplies to Prudhoe Bay.“The dramatic chang
8、es in lake ice may also contribute to further warming of the entire region, because open water on lakes contributes to warmer air temperatures，” Surdu said.The Arctic is warming twice as fast as the rest of the planet, for reasons that may include its layered atmosphere, which traps heat, and the lo
9、ss of sea ice and snow cover, which help reflect the suns energy when present.【语篇解读】本文主要讲述的北极湖冰的变化及其带来的影响。1What does the text mainly tell us?AArctic lakes now freeze earlier and melt later.BAlaskas local warming is decreasing sharply.CArctic lakes are losing ice.DArctic lakes hold more flesh water t
10、han before.【解析】主旨大意题。根据第一段第一句话，特别注意find，show，suggest等词后的宾语从句。【答案】C2What can we infer the North Slope is dotted with?Athick forests.Bnumerous lakes.Cgreen grasslands.Dfertilized farmlands.【解析】推断判断题。根据第二段第二句话可知：The scientists surveyed 402 lakes on the North Slope，where permafrost (permanently frozen g
11、round)and shallow lakes dominate the area.【答案】B3According to the text，the great changes of Alaskas Arctic lakes _.Aare totally beyond Surdus expectationsBare completely within Surdus expectationsCcome as no surprise to Surdu and her coauthorsDcome as a great excitement to Surdu【解析】细节理解题。根据第三段首句中的sho
12、cked可判断答案选A。【答案】A4How many days was the winter ice season of Arctic lakes in 2011 shorter than that in 1950?A6 days.B12 days.C18 days. D24 days.【解析】细节理解题。根据第四段第一句话：The climate models suggest the Arctic lakes froze almost six days later and broke up about 18 days earlier in the winter of 2011 compare
13、d with the winter of 1950.晚结冰六天，早融化18天，那么北极湖泊的结冰季节2011年比1950年一共就少了24天，故选D。【答案】D.完形填空Life was hard, and Cam was broke as he had lost his job as a DJ.He had no cash on him but a brandnew dollar bill with all the autographs (亲笔签名) of the Opry stars, which he _1_carefully and carried with him always.One
14、 morning, he saw a young man _2_quietly in an old yellow Dodge in the parking lot.Cam waved to him and drove away.When he went back to the parking lot that night, he noticed the car again, parked in the_3_space.This car had not moved.The next morning, as Cam walked near the car, the man _4_his window down, _5_ himself and said he had been in his car for days with no money or food.Then, very_6_， the man asked if he might borrow a dollar for a snack to get him by until the next day.Cam explained his_7_that he didnt have a dollar to lend him
