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1、Unit 5The power of natureSection Warming Up,Pre-reading,Reading & Comprehending一、根据句意和汉语提示写出单词1Mr Lee was (任命)as headmaster at the beginning of the school year.答案:appointed2He (挥手) happily to his daughter.答案:waved3The official explained (完全地) clearly what had happened to the reporters from all over
2、the world.答案:absolutely4We should encourage all the children to develop their (潜在的) abilities.答案:potential5The (实际的) cause of the quake is the breaking of rocks at or below the earths surface.答案:actual二、用下列词组或单词的正确形式完成句子be about to compare.with.fast asleep make ones way topotentialequipmentabsolutel
3、y be appointed asburn to the groundout of the way1Youd better often your handwriting others.答案:compare;with2A chemistry factory in the fire.答案:was burned to the ground3The students moved to let the hero pass.答案:out of the way4Though it was raining,the soldiers the village.答案:were making their way to
4、5A foreign country offered some to build up tents which was worth $50,000.答案:equipment6After a whole years being trained,he is fit for driving a car.答案:absolutely7He Chairman of the Students Union in our school.答案:is/was appointed as8The retired teachers still have capability of teaching children.答案
5、:potential9When I came home,my father was .答案:fast asleep10I go to the station to pick him up when he telephoned me that he was delayed.答案:was about to三、单句改错1The young woman was so unfortunately that she married such a bad-tempered man. 答案:unfortunatelyunfortunate2My neighbour was erupted in anger a
6、t the news. 答案:去掉was3Its hard to evaluation him. 答案:evaluationevaluate4Her mother was ill,she couldnt go to school. 答案:wasbeing或在she前加so5A book,as well as a flower,have been bought as her daughters birthday gift. 答案:havehas四、阅读理解AVolcanoesThe ground we walk on seems firm,but deep under the earth and
7、 under the sea the rocks change and move.In some parts of the world there are “fire mountains”,which we call volcanoes.From time to time they burst open and throw out fire and burning ashes.These volcanoes are very dangerous.There are many volcanoes in Indonesia and Philippines.There is also a famou
8、s mountain near Tokyo,Japan,which is a volcano too.Its name is Mount Fuji.For much of the year,it is covered with snow.One of the most famous volcanoes which erupted in recent times is Krakatoa,on an island in Indonesia.The first explosion took place on 20th May,1883,but the biggest eruption did not
9、 come until the 26th and 27th August of that year.The people on the island were used to the explosions by that time,and so they were completely unprepared for this terrible happening.Almost all the people on the island died and the explosion also made huge waves in the sea,which drowned(淹死)many peop
10、le on the other island nearby.After the eruption was over,people saw that the whole northern part of the island had completely disappeared.Scientists say that 15 cubic(立方) kilometres of rocks and ash were thrown up in the explosion.The noise of the explosion was heard nearly 5,000 kilometres away in
11、 the middle of the Indian Ocean,and the city of Jakarta was completely dark for about two and a half hours.1There are many volcanoes .A.everywhere in the worldB.under the earth and the seaC.in BeijingD.in Indonesia答案:D解析:推理判断题。根据第二段的第一句“There are many volcanoes in Indonesia and Philippines.”可知D项正确。2
12、The people near Krakatoa were unprepared when it had its biggest eruption because people there .A.had never met any explosions beforeB.were used to the explosions by that timeC.didnt want to leave their islandD.could do nothing but wait答案:B解析:细节理解题。从第三段中的“The people on the island were used to the ex
13、plosions by that time,and so they were completely unprepared for this terrible happening.”看出当地的人们已经习惯了它的爆发,因此,当最大的爆发发生时,人们没有任何准备。3People who were 5,000 kilometres away from Krakatoa could .A.see that the 15 cubic kilometres of rocks and ash were thrown upB.hear the noise of the explosionC.see the hu
14、ge wavesD.see that Krakatoa was dark答案:B解析:细节理解题。从第三段中的“The noise of the explosion was heard nearly 5,000 kilometres away in the middle of the Indian Ocean.”可以看出几乎在5,000千米远的人们都能够听到它的声音,故选B项。4The biggest explosion made .A.all the people on the island dieB.the whole island disappearC.the city of Jakar
15、ta completely dark for about two and a half hoursD.huge waves in the middle of the Indian Ocean答案:C解析:文中最后一句中的“.and the city of Jakarta was completely dark for about two and a half hours.”为文中原句,故C项正确。A项错在“all”;B项错在“whole”;D项巨浪只是在附近出现,在印度洋中部可以听到它的声音。BThere are over 500 known active volcanoes in the w
16、orld and thousands of extinct volcanoes.Volcanoes are found on every continent except Australia.There are about 80 active volcanoes under the oceans.Volcanoes are both terrifying and fascinating.In order to understand why volcanic eruptions happen,it is necessary to know some things about how the ea
17、rth is made.The part of the earth we live on is an 18-mile-thick layer of solid rock called the crust.Beneath the crust,in a layer called the mantle(地幔),it is hot enough to melt some of the rock,creating magma(岩浆).When the magma finds cracks in the earths crust,it rises up.Gas bubbles(气泡) inside the
18、 magma grow bigger and try to escape as the molten rock gets closer to the earths surface.When the gas bubbles cant be held back any longer,the volcano erupts.Imagine shaking a soda bottle until the gas inside blows the cap off,and you can understand something of how a volcano erupts.If the magma is
19、 runny,and the gas can escape easily,the eruption is gentle.But if the magma is thick,the gas has to build up more pressure to escape.Then the eruption is explosive.When a volcano erupts,the molten rock that flows from it is called lava.The lava may run for some distance,or it may pile up near the v
20、olcano,making the mountain larger.During an explosive eruption,pieces of rock are thrown from the volcano.Scientists call these pyroclasts(火山碎屑).The smallest pyroclasts are called ash.Ash is often thrown into the atmosphere by the force of the eruption.Larger rocks,about walnut(胡桃)size,are called la
21、pilli,Italian for “little stones”.The largest pyroclasts are called blocks if they are solid,or bombs if they are molten.Volcanoes have been a major force in the formation of our planet for thousands and thousands of years.Today geologists continually observe active volcanoes for signs of eruption.U
22、sing modern instruments,they are usually able to issue a warning before a volcano erupts.5The author explains how the volcano erupts by .A.making a comparisonB.telling a storyC.using figuresD.asking questions答案:A解析:细节理解题。由第三段中的“Imagine shaking a soda bottle until the gas inside blows the cap off,and
23、 you can understand something of how a volcano erupts.”可知A项正确。6The underlined word “it” in Paragraph 3 refers to the “”.A.crackB.crustC.mantleD.magma答案:D解析:词义猜测题。由第三段第一句“When the magma finds cracks in the earths crust,it rises up.”可知,it应代指上文所提到的东西,依据本句的句意可知,it指的是magma。7Whether the eruption is explos
24、ive depends on .A.the temperature of the crustB.whether the magma is thickC.whether the magma is near the mantleD.the number of gas bubbles inside the magma答案:B解析:细节理解题。由第三段倒数第二句可知B项正确。8We learn from Paragraph 5 that .A.ash is smaller than pyroclastsB.bombs are about walnut sizeC.blocks are larger t
25、han lapilliD.lapilli exist in the atmosphere答案:C解析:推理判断题。由第五段最后一句可知C项正确。五、短文改错Nowadays,the computer technology develops very fast that the Internet has become more and more popular.Some students regarded it as a great helper.Because there has a lot of information online,so you can surf the Internet
26、for any information you need in a short time without working hard in the library.This is also very convenient to talk with others by using the Internet.Moreover,other students think that there is some information online which is not good for students.In addition,spend too much time playing games wil
27、l not only have a bad effect on their studies but also do harm for health.Therefore,we should make properly use of the Internet.It is of great important to separate good plants from wild weeds.答案:第一句:veryso第二句:regardedregard第三句:hasis;去掉so第四句:ThisIt第五句:MoreoverHowever第六句:spendspending;forto第七句:properlyproper第八句:importantimportance