2019-2020学年人教新标准版必修1学案:Unit 4 Period One
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1、Can earthquakes be predicted?Scientists are working on programs to predict where and when an earthquake will occur.They hope to develop an early warning system that can be used to forecast earthquakes so that lives can be saved.Earthquakes are the most dangerous and deadly of all natural events.They
2、 occur in many parts of the world.Giant earthquakes have been recorded in Iran,China ,Guatemala,Chile,India,and Alaska.Two of the biggest earthquakes that were ever recorded took place in China and Alaska.These earthquakes measured about 8.5 on the Richter Scale.The Richter Scale was devised by Char
3、les Richter in 1935,and compares the energy level of earthquakes.An earthquake that measures 2 on the scale can be felt but causes little damage.One that measures 4.5 on the scale can cause slight damage,and an earthquake that has a reading of over 7 can cause major damage.It is important to note th
4、at a reading of 4 indicates an earthquake ten times as strong as one with a reading of 3. Scientists want to be able to predict those earthquakes that have a reading of over 4 on the Richter Scale.How do earthquakes occur?Earthquakes are caused by the shifting of rocks along cracks,or faults,in the
5、earths crust.The fault is produced when rocks near each other are pulled in different directions.The bestknown fault in North America is the San Andreas fault in the state of California in the United States.The nations that are actively involved in earthquake prediction programs include Japan, China
6、,Russia,and the United States.These countries have set up seismic(地震的) networks in areas of their countries where earthquakes are known to occur.These networks are on the alert for warning signs that show the weakening of rock layers that can precede(在之前发生) an earthquake.Many kinds of seismic instru
7、ments are used by the networks to monitor the movements of the earths crust.The scientists also check water in deep wells.They watch for changes in the water level and temperature that are associated with movement along faults.根据短文内容判断正(T)、误 (F)1Two of the biggest earthquakes that were ever recorded
8、 took place in China and Chile.(F)2An earthquake that has a reading of over 7 can cause major damage.(T)3The fault is produced when rocks near each other are pulled in the same direction.(F)Period One Warming Up & ReadingPrereading匹配左边的单词与右边的汉语意思第一组1crack A发臭的;有臭味的2smelly B运河;水道 3pipe C裂缝;噼啪声;使开裂;破裂
9、4event D管;导管5canal E事件;大事答案 1.C 2.A 3.D 4.E 5.B第二组6steam A砖;砖块7ruin B废墟;毁灭;使破产8brick C轨道;足迹;痕迹9dam D蒸汽;水汽10track E水坝;堰堤答案 6.D 7.B 8.A 9.E 10.C第三组11rescue A灾难;灾祸12trap B援救;营救13disaster C掩蔽;掩蔽处;避身处14bury D埋葬;掩埋;隐藏15shelter E使陷入困境;陷阱;困境答案 11.B 12.E 13.A 14.D 15.CStep 1 Fastreading1Whats the main idea o
10、f the passage?AA terrible earthquake of Tangshan.BBefore the earthquake of Tangshan.CDuring the earthquake of Tangshan.DDamages of the earthquake of Tangshan.答案 A2Find out the main idea of each paragraph.Para.1 A The earthquake caused unbelievable destruction to Tangshan.Para.2 BThe earthquake happe
11、ned and caused deaths or injuries in Tangshan.Para.3 CHelp came soon after the quakes.Para.4 D No one paid attention though strange things happened.答案 Para.1 D Para.2 B Para.3 A Para.4 CStep 2 Carefulreading.Tell whether the following statements are True(T) or False(F). 1Before July 28,1976,strange
12、things happened in the countryside of northwest Hebei.(F)2When the earthquake happened in Hebei,onethird of the nation could feel it.(T)3The number of people who were killed or seriously injured reached more than 4,000,000.(F)4Another big quake shook Tangshan while rescue workers and doctors were sa
13、ving the people trapped.(T)5Animals like cows,pigs and chickens as well as people suffered a lot in the earthquake.(T).Choose the best answer.1Many strange things happened in the countryside EXCEPT that .Athe well walls had deep cracks in themBsome animals were too nervous to eatCfish jumped out of
14、bowls and pondsDbirds flew higher than usual答案 D2How long did the earthquake last?A15 minutes. B42 minutes.C15 seconds. D42 seconds.答案 C3Which is NOT true according to the passage?APeople in Beijing felt the earthquake.BPeople of Tangshan cared much about the strange events before the earthquake.CIf
15、 the earthquake had happened during the daytime,it wouldnt have caused so many deaths.DMany soldiers helped to rescue the people who were trapped under the ruins.答案 B4Which of the following can also be used as a title of the passage?ATangshan EarthquakeBThe World at an EndCHow to Prevent an Earthqua
16、keDNew Tangshan答案 A5What does the last sentence “Slowly,the city began to breathe again.” mean?APeople who were trapped came to life.BThe trees turned green.CThe animals began to breathe.DThe city returned to normal gradually.答案 DStep 3 PostreadingAfter reading the passage,please fill in the followi
17、ng blanks.Several days before July 28,1976,many strange things happened in Tangshan.They were 1.signs(sign) for an earthquake.But people 2.who/that lived there didnt think much of that.At 3:42 am that day,the earth began 3.to shake(shake),4.which destroyed almost all the city in fifteen terrible sec
18、onds.Many people,5.including(include) workers and doctors,came 6.to rescue(rescue) those who were trapped under the ruins.Later that afternoon,7.another big earthquake hit the city.More people were killed or injured and 8.more(many) buildings fell down.Very soon the army sent a lot of soldiers to he
19、lp,and teams 9.were organized(organize) to dig out the 10.trapped(trap) and to bury the dead.By and by things improved and the city began to breathe again.Step 4 Sentencelearning1But the one million people of the city,who thought little of these events,were asleep as usual that night.句式分析 此句的主干为 But
20、 the one million people of the city were asleep。who thought little of these events 为非限制性定语从句,修饰 one million people;as usual 为方式状语;that night 为时间状语。自主翻译 但是这座城市的一百万居民几乎没有把这些情况当回事,那天晚上照常睡着了。2Then ,later that afternoon,another big quake which was almost as strong as the first one shook Tangshan.句式分析 此句为
21、复合句,句子的主干为 another big quake shook Tangshan。which 引导的定语从句修饰 another big quake;Then ,later that afternoon 为时间状语。自主翻译 接着,在那天下午晚些时候,强度几乎和第一次一样的地震又一次在唐山爆发了。3The army organized teams to dig out those who were trapped and to bury the dead.句式分析 此句为复合句,句子的主干为 The army organized teams。两个不定式 to dig out those
22、和 to bury the dead 为并列结构,在句中作目的状语; who were trapped 为定语从句,修饰第一个不定式中的宾语 those。自主翻译 解放军组成小分队,将受困的人们挖出来,将死者掩埋。.阅读理解AWhen an earthquake hit a small town,many houses fell down.After the earthquake,all the newspapers reported many stories about some of the families who were in trouble.One Sunday,when I wa
23、s reading a newspaper,a special picture touched me.It gave the clothing sizes of each family member.I thought that this would be a good chance to teach my children to help those who were less lucky than themselves.I said to my sevenyearold twins, Brad and Brett,and threeyearold Meghan, “We have so m
24、uch,and these poor people now have nothing.Well share what we have with them.”I filled a box with foods and clothes.While I was doing this,I encouraged the boys to choose their toys and donate some of their less favourite things.Meghan watched quietly as the boys took out their old toys and games an
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