1、Unit 3 The world of science课时作业(七)Unit 3Section Starting out & Understanding ideas.阅读理解AIn December 2010，Lauren Robinson walked into science class. “My throat started closing，”she remembers. “They called an ambulance (救护车)，and I had to go to the hospital.” It wasnt the first time that Lauren had to
2、be rushed to the hospital. Thats because Lauren,15，has a food allergy (过敏症)Many people have food allergies. But Laurens allergy is much worse than most. She cant eat food that contains milk. When she was younger，Lauren could stay safe by choosing food carefully. That changed in middle school. By eig
3、hth grade，Lauren couldnt be in the same room with dairy products (乳制品). Thats what happened in Laurens science classroom. Earlier that day，students had held a pizza party. Cheese particles (微粒) still hung in the air. Lauren never returned to school after that.In 2011，Lauren got great news. She could
4、 go to school and stay safe by driving a robot to class. Lauren controls it from home over the Internet，using a computer. She uses the keyboard to drive the robot from class to class. A video camera on the robot lets Lauren see what is going on in school. A video screen on the robot lets students an
5、d teachers see her. It has microphones (话筒) so that everyone can talk to Lauren too.At first，Lauren thought that using the robot was “a weird idea”. No one went to school like that. “I kept knocking into walls at first，” says Lauren，laughing. “Id keep falling！”But she got used to it quickly. Using t
6、he robot feels natural now. Lauren even created a way to “raise her hand” using the robots headlights. “I can turn them on and off until the teacher sees me，” she explains. Lauren looks forward to going to college. Shed like to work in a medical job.1Why was Lauren sent to the hospital in December 2
7、010?AShe accidentally drank some milk.BShe carelessly touched some pizza.CShe ate some dairy food.DShe breathed in cheese particles.2What do we know about Laurens allergy?ALaurens throat was totally damaged because of it.BIt becomes better as Lauren gets older.CIt often puts Lauren in a dangerous si
8、tuation.DLauren was born with it.3The underlined word “weird” in Paragraph 4 probably means “_”Astrange BcleverCwrong Dbig4According to the text，the robot _.Awas easy to control at firstBbecomes friends with LaurenCcan communicate with others all by itselfDmakes Lauren feel like shes really in schoo
9、lBIf you go into the woods with your friends, stay with them. If you dont, you may get lost. If you do get lost, this is what you should do. Sit down and stay where you are. Dont try to find your friendslet them find you. You can help them to find you by staying in one place. There is another way to
10、 help your friends or other people nearby to find you. Give them a signal by shouting or whistling (吹口哨) three times. Stop. Then shout or whistle three times again. Any signal given three times is a call for help. You will be helped by others. Keep up the shouting or whistling, always three times to
11、gether. When people hear you, they will know that you are not just making noise for fun. They will let you know they have heard your signal. They will give two shouts, two whistles or two gunshots. When a signal is given twice, it is an answer to a call for help. If you dont think that you will get
12、help before night comes, try to make a little house and cover up the holes with branches with lots of leaves and grass. What should you do if you get hungry or need to drink some water? You should have to leave your little branch house to look for a brook. Dont just walk away. Pick off small branche
13、s and drop them as you walk so that you can find your way back. The most important thing to do when you are lost isstay in one place.5How do you let people believe that you are not just making noise for fun? AStop now and then. BGo on shouting or whistling. CShout over and over at the top of voice.
14、DShout or whistle three times once a while.6If nobody answers you after your signal, what should you do then? AGive two gunshots. BShout louder. CStop shouting. DMake a house.7If you feel thirsty when you are lost in the forest, what should you do? AGo and find a brook. BLight a fire and make yourse
15、lf some tea. CGo to find a brook and leave marks behind you. DFind something to hold the water.8Whats the best title for the passage? AWhat Do Three Shots and Two Shots Mean in a Forest BHow to Find Your Friends When You Are Lost in the Woods CWhat to Do if You Get Lost in a Forest DThe Most Importa
16、nt Thing to Do Is to Stay in One Place.完形填空Heroes come in different shapes and sites. Some are born to give others a _1_. Then there are the people who just happen to be in the right place at the right time. That was the _2_ for John Underwood.On a cold evening, a storm _3_ near his home. Underwood
17、was heading over to help his sister when the roads were _4_. He saw some other drivers get stuck, so he got out of his truck to help. “My belief is that if I have the ability to do good, then I should do it. There should be no _5_.” he said.Underwood wasnt out of his _6_ long before he heard a cry,
18、“Someone was screaming, My parents, my parents ！” Moments later, a 12yearold boy ran up to Underwood, saying his parents were _7_ and asked for help.The Hammonds went to get things from the basement when the walls _8_ to bear the weight of rain and fell down, and they couldnt _9_. Worse still, the w
19、ater was rising fast. _10_ was of extreme significance, so Underwood took action at once. Any inappropriate action could add more dangers. Luckily, Underwood had _11_ as a contractor (承包商). “Digging a hole in the living room floor, I knew its a _12_ way.”he said.With physical strength, patience, and
20、 a lot of _13_， Underwood saved their lives. He said he did what anyone would do, but thats not necessarily true. Its hard to put yourself in a dangerous way to rescue another. Thats why the American Red Cross _14_ him. Ann Otto, who was in charge of the 23rd Annual Acts of Courage Awards, said the
21、Awards should go to heroes like Underwood who have acted _15_ and selflessly in a time of emergency.1A.lesson BdirectionChope Dhand2A.role BconcernCcase Dbehavior3A.broke BdisappearedCreturned Dchanged4A.cleared BcompletedCrepaired Dflooded5A.arrangement BwonderCexcuse Dproblem6A.power BsenseChouse
22、Dvehicle7A.ignored BtrappedCinjured Dmissed8A.managed BfailedCtried Dstruggled9A.speak BreuniteCescape Dsurvive10A.Time BReliefCSuccess DAction11A.attitude BpotentialCconfidence Dexperience12A.difficult BsafeCcreative Dquick13A.bravery BencouragementCanxiety Dresponsibility14A.invited BhonoredCinter
23、viewed Dhelped15A.fortunately BimmediatelyCactively Dcourageously课时作业(七).阅读理解【语篇解读】本文是记叙文。Lauren通过远程遥控机器人去学校上学。1答案与解析：D细节理解题。根据第二段的“couldnt be in the same room with dairy products.”及“Cheese particles still hung in the air.”可知，那天在科学课上，Lauren因为吸入奶酪微粒而导致过敏症发作，被送进医院。2答案与解析：C细节理解题。根据第一段中的“My throat start
24、ed closing”以及第二段中的“But Laurens allergy is much worse than most.”，“Lauren couldnt be in the same room with dairy products”和“Lauren never returned to school after that.”可知，Lauren的过敏症一旦发作就会产生可怕的后果。3答案与解析：A词义猜测题。根据画线单词后的“No one went to school like that.”可知，一开始，Lauren觉得用机器人代替自己去上学很奇怪，因为没人会那样做。4答案与解析：D推理判
25、断题。根据第三段的“A video camera.talk to Lauren too.”以及第四段的“created a way.she explains.”可知，用机器人代替Lauren去学校上学跟她自己去没什么两样。【语篇解读】文章主要介绍的是在森林里迷路时应该怎么办。如果和朋友们一起进入森林的话，最好和他们待在一起。如果迷路的话，最好待在原地等待救援。5答案与解析：D细节理解题。根据第三段“Give them a signal by.three times is a call for help.”可知，每过一会儿就喊叫三声或吹三下口哨是求救的信号，故选D。6答案与解析：D细节理解题。根
26、据倒数第二段“If you dont think that you will get help before night comes, try to make a little house.”可知，如果没有人回应你的求救信号，这时应该给自己布置一个过夜的房子，故选D项。7答案与解析：C细节理解题。根据文章倒数第二段“.leave your little branch house to look for a brook.Pick off small branches and drop them as you walk so that you can find your way back.”可知，
27、当口渴时，你需要去找一条小溪，但是记得在路上做标记，故选C。8答案与解析：C主旨大意题。根据第一段“If you do get lost, this is what you should do.”和最后一段“The most important thing to do when you are lost isstay in one place.”可知，文章主要讲的是在森林里迷路时应该怎么办，故选C。.完形填空【语篇解读】本文是一篇记叙文。文章叙述了John Underwood在一次暴风雨中，沉着勇敢地帮助了他人的故事，并被美国红十字会授予了荣誉。1答案与解析：D考查名词辨析。A.lesson课
28、程；B.direction指导；C.hope希望；D.hand手。句意：有些人生来就是帮助别人的。固定短语give sb. a hand“帮助某人”。故选D项。2答案与解析：C考查名词辨析。A.role角色；B.concern关心；C.case事件，情况；D.behavior行为。 句意：这就是约翰安德伍德的情况。此处指上文中“对的时间出现在对的地方”，而约翰就是这样的情况(case)。故选C项。3答案与解析：A考查动词辨析。A.broke(天气)突变；B.disappeared消失；C.returned归还；D.changed改变。句意：在一个寒冷的夜晚，他家附近突然下起了一场暴风雨。bre
29、ak可指好的天气突然变化。故选A项。4答案与解析：D考查动词辨析。A.cleared清理；B.completed完成；C.repaired修理；D.flooded淹没。由上文暴风雨可知，道路应是被雨水淹没(flooded)。故选D项。5答案与解析：C考查名词辨析。A.arrangement安排；B.wonder好奇；C.excuse借口；D.problem问题。句意：没有任何借口。此处指上文中尽力帮助别人是没有任何理由和借口的。故选C项。6答案与解析：D考查名词辨析。A.power力量；B.sense感觉；C.house房子；D.vehicle车辆。上文提到约翰开出了自己的truck，此处是指
30、他下车(vehicle)。故选D项。7答案与解析：C考查动词辨析。A.ignored忽视；B.trapped困住；C.injured受伤；D.missed错过。由下文男孩寻求约翰的帮助(ask for help)可知，小男孩的父母是被困住(trapped)了。故选C项。8答案与解析：B考查动词辨析。A.managed管理；B.failed失败；C.tried尝试；D.struggled挣扎。句意：哈蒙德一家到地下室去取东西，突然墙无法承受大雨的冲刷，墙倒了。fail to do sth.“没能做到；失败”。故选B项。9答案与解析：C考查动词辨析。A.speak说；B.reunite重聚；C.e
31、scape逃走；D.survive生存。由上文可知墙倒塌的时候，他们还在地下室，因此他们没能逃走(escape)。故选C项。10答案与解析：A考查名词辨析。A.Time时间；B.Relief减轻；C.Success成功；D.Action行为。由下文可知Underwood立刻采取了行动，说明时间(time)极其至关重要。故选A项。11答案与解析：D考查名词辨析。A.attitude态度；B.potential潜在的；C.confidence自信；D.experience经验。句意：幸运地是，安德伍德有做过承包商的经验。由下文可知他对房屋结构非常清楚，很有经验。故选D项。12答案与解析：B考查形容
32、词辨析。A.difficult困难的；B.safe安全的；C.creative有创造性的；D.quick快的。由上文可知他们的处境危险，此刻安德伍德知道这条安全的(safe)道路。故选B项。13答案与解析：A考查名词辨析。A.bravery勇敢；B.encouragement鼓励；C.anxiety焦急；D.responsibility责任。句意：凭借体力、耐心和极大的勇气，安德伍德挽救了他们的生命。情况紧急，安德伍德凭借自己的勇敢，找到了出路。故选A项。14答案与解析：B考查动词辨析。A.invited邀请；B.honored荣誉；C.interviewed采访；D.helped帮助。句意：这就是为什么美国红十字会授予他荣誉的原因。故选B项。15答案与解析：D考查副词辨析。A.fortunately幸运地；B.immediately立即地；C.actively活跃地；D.courageously勇敢地。此处对应上文中“凭借体力、耐心和极大的勇气(bravery)”，指“表现得勇敢(courageously)和无私”。故选D项。
