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1、Unit 4 Earthquakes,【语篇导读】据统计,全球每年约发生500多万次地震,85%的地震发生在地震带上,其中绝大多数人们感觉不到;但是总有一两次能对人类造成严重危害的大地震发生。墨西哥作为地壳活动较为活跃的地区,就发生了很多让人心悸的大地震。 Rocking And Rolling With Mexicos Earthquakes Chances are youve seen a disaster movie in which an earthquake ruins a city.Earthquakes can be huge,frightening events,but ear
2、thquakes actually happen every day.Most of them arent even felt by people.The ground under our feet may feel solid and unmoving,but it is really moving all the time. Some parts of the world are more likely to have earthquakes than others.Mexico is one of the most active earthquake areas in the world
3、,and Mexicos history is filled with disastrous earthquakes.,One of the worst took place on September 19,1985,when a quake that measured 8.1 on the Richter scale took place just off Acapulco.About 10,000 people were killed and another 30,000 injured.Thousands more were left homeless.The quake happene
4、d early in the morning and was especially damaging because Mexico City is built on an ancient lakebed.The sand and silt(淤沙,淤泥) under the city are much less stable (稳固的)than bedrock.After the quake,city officials found 3,000 buildings were destroyed,and another 100,000 needed repairs.Gas mains broke
5、open,causing fires throughout the city. Another devastating(毁灭性的) earthquake in Mexicos recent history hit Veracruz on August 23,1973. Because it took place at 4 a.m.many people died in their beds when homes and apartment houses fell down around them.Between 600 and 1,200 people died with hundreds i
6、njured and many buildings destroyed.,Mexico will always experience earthquakes,simply because of its location(位置).Mexicans have learned to recognize the warning signs of a quake and what to do if one hits.This can be as simple as noticing when wind chimes (风铃) are moving on a day without wind,which
7、might provide the extra (额外的)seconds needed to make a safe escape. 导读诱思 Why do earthquakes often happen in Mexico? 答案 Earthquakes often happen in Mexico simply because of its location.It is one of the most active earthquake areas.,Section Warming Up,Pre-reading, Reading & Comprehending,一、词汇新知 1.通过查阅
8、词典,写出下列单词的派生词 (1)nation n.民族;国家;国民 adj.国家的;国民的;民族的 adj.国际的;国际关系的;世界的 (2)extreme adj.极度的 adv.极度地 (3)injure vt.损害;伤害 adj.受伤的 n.伤害,损害;受伤处 (4)electricity n.电;电流;电学 adj.电的;电动的;发电的;导电的 adj.有关电的;电气科学的 (5)bury vt.埋葬;掩埋;隐藏 n.埋葬;葬礼 答案 (1)national;international (2)extremely (3)injured;injury (4)electric;electr
9、ical (5)burial,2.选择合适的词组填空 right away as if at an end in ruins dig out (1)Must I do the work ? No,you neednt. (2)Many people were buried under the mine. The soldiers are the trapped people. (3)The whole city is . It is in need of help from all over the world. (4)You will feel you were at home while
10、here. (5)My holiday is and I must go back to work tomorrow. 答案 (1)right away (2)digging out (3)in ruins (4)as if (5)at an end,二、阅读导学 1.When an earthquake happens,what should we do to protect ourselves? 答案 Firstly,dont panic and calm down.Secondly,find a safe place to stay in.If in a room,find someth
11、ing hard,such as a desk,a table or even a bed,and never take a lift to go downstairs.If in the open air,find an open place,such as the playground. 2.阅读课文,选择正确答案 阅读A NIGHT THE EARTH DIDNT SLEEP,选择正确答案 (1)The title “A NIGHT THE EARTH DIDNT SLEEP” means . A.the earth was wide awake all night long B.peo
12、ple on the earth couldnt fall asleep that night C.the earth shook like being crazy,causing great damage to people D.animals on the earth did not sleep that night,C,(2)All the following strange things happened in the countryside before the earthquake EXCEPT that . A.the water in the village wells ros
13、e and fell B.mice ran out of the fields looking for places to hide C.the sound of planes could be heard outside the city of Tangshan even when no planes were in the sky D.fish swam in the bowls and ponds freely and pleasantly as usual (3)We can infer from the text that . A.the whole city was at an e
14、nd B.the armys coming brought hope to the city C.people lost hope faced with the terrible earthquake D.the signs before the earthquake werent clear at all,D,B,(4)What does the first paragraph mainly tell us about? A.People saw bright lights in the sky at about 3:00 am on July 28,1976. B.A terrible e
15、arthquake happened that night. C.People were asleep as usual that night. D.Some strange things happened before the earthquake. (5)Whats the meaning of the last sentence “Slowly,the city began to breathe again.”? A.People werent sad any more. B.The life in Tangshan began to return to normal. C.The ea
16、rthquake finally came to an end. D.Those who were trapped were saved.,D,B,1,2,3,4,5,6,7,8,9,1.Imagine your home begins to shake and you must leave it right away. 想象一下你家的房子开始晃动,你必须马上离开家。 imagine v. 想象 【高考典句】(2017全国,D)Charles Darwin,over 150 years ago,imagined a world far busier,noisier and more intimate(亲密的) than the world we can see and hear. 150多年前,查尔斯达尔文就想象了一个比我们所看到、听到更加繁忙、更加吵闹而且更加亲密的世界。 Also imagine
