高中英语人教版 (2019)必修 第三册Unit 4 Space Exploration备课ppt课件

这是一份高中英语人教版 (2019)必修 第三册Unit 4 Space Exploration备课ppt课件，共60页。PPT课件主要包含了单元核心素养，单元话题导读，课前自主预习，on　，on　in　，to　，at　，from　，in　，up　等内容，欢迎下载使用。

What Is the UniverseThe universe cntains everything that exists including the Earth，planets，stars，space and galaxies. This includes all matter，energy，and even time.
Hw big is the universe?N ne knws fr sure just hw big the universe is. It culd be infinitely large. Scientists，hwever，measure the size f the universe by what they can see. They call this the“bservable universe”．The bservable universe is arund 93 billin light years acrss.
The universe is expanding.One f the interesting things abut the universe is that it is currently expanding. It’s grwing larger and larger all the time. Nt nly is it grwing larger，but the edge f the universe is expanding at a faster and faster rate. Scientists think that the edge f the universe is expanding faster than the speed f light.
What is the universe made f?Even thugh the Earth seems really big t us，it’s actually a very tiny part f the universe. The Sun has a mass f 330，000 times the Earth. The Sun is just ne star in the Milky Way galaxy that cntains ver 300 billin stars and scientists estimate that there are ver 170 billin galaxies in the universe. Hwever，mst f the universe is what we think f as empty space. All the atms tgether nly make up arund fur percent f the universe.Hw ld is the universe?Scientists think that the universe began between 13 and 14 billin years ag with the start f a massive explsin called the Big Bang.
Sectin Ⅰ　Listening and Speaking，Reading and Thinking
Ⅰ．重点单词1．____________ n．宇航员；太空人2．____________ n．程序；步骤；手续3．_________ adj. 精神的；思想的4．______________ adj. 有智慧的；聪明的；有智力的 →_______________ n. 智力； 才智； 智慧5．_________ n．火箭；火箭弹6．__________ n．重力；引力
astrnaut　prcedure　mental　intelligent　intelligence　rcket　gravity　
7．___________ n. 边境；国界；边远地区8．__________ n．交通工具；车辆9．___________ n. 宇宙；天地万物 →____________ adj. 普遍的； 全体的； 全世界的10．_____________ adj. 有决心的；意志坚定的 →____________ vt. 查明；确定；决定 →________________ n．决心
frntier　vehicle　universe　universal　
determined　determine　determinatin　
11．__________ n．人造卫星；卫星12．_________ vt. & n. 发射；发起；上市13．________ n. (环绕地球、太阳等运行的)轨道；势力范围　vt. & vi. 沿轨道运行；环绕……运行14．________ adj. 巨大的；伟大的　n. 巨人；巨兽；伟人15．_______ n. 跳跃；剧增；剧变　vi. & vt. 跳过；跃过16．__________ n．人类
satellite　launch　rbit　giant　leap　mankind　
17．_________ n．(政府的)专门机构；服务机构；代理处 →________ n. (企业、政治等的) 代理人；经纪人18．_______ n. [pl. ]资料；数据19．_______________ adj. 失望的；沮丧的 →________________ adj. 令人失望的 →_____________ vt. 使失望 →_________________ n．失望
agency　agent　data　disappinted　disappinting　disappint　disappintment　
20．_________ n. 渴望；欲望　vt. 渴望；期望 →____________ adj. 渴望的，有欲望的21．________________ adv. 独立地；自立地 →______________ adj. 独立的；自立的 →_______________ n．独立 →____________ adj. 依靠的；依赖的 →_____________ n．信赖；依赖 →_________ v．依靠；依赖
desire　desirable　independently　independent　independence　dependent　dependence　depend　
22．_____________ n. 航天器；宇宙飞船23．____________ n. 太空行走；太空行走的时间24．_______ n. 玉；翡翠；玉器25．_______ vi. & vt. (两架航天器)对接；(使)…… 进港 n. 码头；船坞26．_________ vt. & vi. 标志着；标明；发信号 n. 信号；标志 →_______ n. 迹象； 征兆；手势 v．签(名); 署(名)；打手势
spacecraft　spacewalk　jade　dck　signal　sign　
Ⅱ．重点短语1．carry _____ 继续做；坚持干2．_____ bard在宇宙飞船上；在船上；在飞机上3．_____ the hpe f ding sth. 抱着……的希望4．s as _____ (d sth. )为了；以便5．_____ the age f在……岁时6．graduate _______ 从……毕业7．_____ the future在将来
8．g _____ 增长；上升；升起；被兴建；被建造；被焚毁9．cme _______ 下来；下降；倒塌10．lk _____ 抬头看；(在词典、计算机等中)查阅11．find ______ 弄清楚；查明12．fcus _____ 集中(注意力，精力等)13．believe _____ 相信；信任14．_______ prgress取得进步15．_____ a shrt time在很短时间内
dwn　up　ut　 n　　 in　
Ⅲ．重点句型1．These disasters _______ everyne _____________________，but the desire t explre the universe never died.这些灾难让每个人都感到悲伤和失望，但探索宇宙的渴望从未消失。2．Despite the difficulties，scientists hpe future discveries will __________ enable us t understand hw the universe began，________ help us survive well int the future.尽管困难重重，科学家希望未来的发现不仅能让我们了解宇宙的起源，而且还能帮助我们在未来活得很好。
sad and disappinted　
Ⅳ．课文理解1．When did peple make travelling int space pssible？______A．In the thirteenth century.B．In the eighteenth century.C．In the mid-20th century.D．In the twenty-first century.
2．What was ne giant leap fr mankind？______A．The Sputnik 1 satellite was launched and rbited arund Earth.B．Yuri Gagarin went int space n 12 April 1961.C．America’s NASA space agency launched Vyager 1n 5 September 1977.D．American astrnaut Neil Armstrng stepped nt the mn n 20 July 1969.
3．Why did the desire t explre the universe never die when peple were faced with these disasters？______A．Because the accident was nt serius.B．Because there was n danger in these disasters.C．Because explring space is an internatinal task.D．Because carrying n space explratin is imprtant.
4．Which f the fllwing is NOT China’s achievement？______A．Shenzhu 5 spacecraft rbited Earth successfully.B．Shenzhu 6 and 7 cmpleted a secnd manned rbit and the first Chinese spacewalk.C．Tiangng 2 space lab was launched int space.D．Chang’e 4 explred planets like Mars and Jupiter.
1．determine vt. 查明；明确；决定
My aim was first f all t determine what I shuld d next.我的目标首先是要确定自己下一步该做什么。(2019·天津高考)Driven by heaven-knws-what mtives，he determines t write a bk.在天知道什么动机的驱使下，他决定写一本书。His enemies are determined t ruin him.他的敌人决意要毁了他。
(1)determine t d sth. 决定/决心做某事determine n (ding) sth. 决定(做)某事determine sb. t d sth. 使某人下决心做某事(2)determined adj. 坚决的；有决心的be determined t d sth. 决心做某事be determined that… 决心……(3)determinatin n．决心；决定with determinatin坚决地
单句语法填空①I have determined _____ ging t the cuntryside after graduating frm cllege.②He is _____________ (determine) t take gd care f his parents frm nw n.
determined　
③His advice determined me __________ (drink)and smke n mre.④Helen was a strng girl and she finally achieved her dream with great ________________ (determine)．⑤He himself determined _________ (give)his wn life t the same cause.
determinatin　
完成句子⑥We ___________________________ what happened that night.我们着手查明那天晚上到底发生了什么事。⑦(2018·全国Ⅲ卷阅读) Yesterday，I sat with my sn，Shepherd，___________ (determine) t test my wn thery n this.昨天，我和儿子Shepherd坐在一起，决定测试我自己的关于这件事的理论。
set ut t determine exactly　
⑧(2020·全国Ⅱ卷书面表达)I __________________________，t be a useful persn t the cuntry and t cntribute t the imprvement f peple’s lives.我决心要努力学习，做一个对国家有用的人，为改善人民生活做出贡献。
am determined t study hard　
2．desire n．渴望；欲望　vt. 渴望；期望
If yu desire physical activities，yu can chse activities frm swimming t hrse riding.如果你想参加体育运动，你可以选择从游泳到骑马等活动。They desire t help thse wh are in need f help.他们渴望帮助那些需要帮助的人。
She desires him t slve this prblem.她渴望他能解决这个问题。She desires that he (shuld) stay with her.她渴望他跟她待在一起。D yu have an intense desire fr truth and hnesty?你是否对真相、诚实有极强的渴望？
(1)desire sth. 渴望得到某物desire t d sth. 希望做某事desire sb. t d sth. 希望某人做某事desire that… 希望……(从句中用shuld d结构，shuld可以省略)(2)have a desire fr sth. 渴望得到某物have a desire t d sth. 渴望做某事
“desire that ＋主语＋(shuld＋)动词原形”表示“希望……”，desire后的主语从句、宾语从句和同位语从句用虚拟语气，谓语动词用“shuld＋动词原形”，shuld可以省略。The president desired that yu (shuld) visit him next week.总统希望你下星期去拜访他。
后跟名词性从句，从句谓语用“(shuld＋)动词原形”的动词：一个“坚持”(insist)；两道“命令”(rder，cmmand)；四条“建议”(suggest，prpse，advise，recmmend)；五点“要求”(demand，desire，request，require，urge)。
单句语法填空①He desires _________ (jin) the army and devte himself t the cuntry.②(2022·重庆巴蜀中学高一期末)Fashin is a cmpetitive and hard business where peple’s desire ______ new ideas is hard t satisfy.③Several peple have expressed a desire ________ (see) the reprt.④At yesterday’s meeting，the manager desired that the prject _____________________ (finish) n time.
(shuld) be finished　
完成句子⑤He ___________________________ (渴望她去)and see him at nce.⑥The general cmmanded that _________________ (我们发起进攻) at nce.⑦It is requested that _______________________ (玛丽和我们待在一起) fr the weekend.
desires that she(shuld) g　
we shuld attack　
Mary shuld stay with us　
1．be curius abut对……好奇
be curius abut the strange man 对那个陌生人好奇be curius t d sth. 好奇做某事satisfy my curisity满足我的好奇心
have curisity t d sth. 有做某事的好奇心aruse ne’s curisity abut… 唤起某人关于……的好奇心shw curisity abut … 对……显示出好奇ut f/thrugh/frm curisity 出于好奇心with curisity＝curiusly带着好奇心；好奇地
单句语法填空①(全国Ⅰ卷阅读)Students are being dared t draw a picture，write an article，take a pht r write a pem that shws what they are curius ________.学生们可以大胆地画一幅画，写一篇文章，拍一张照片或者写一首诗来表达他们的好奇心。
②Peple gathered rund，curius _________ (knw) what was happening.人们聚在一起，好奇地想知道发生着什么事。③The strange wman lked at us students ____________ (curius)．那位陌生的女士好奇地看着我们这些学生。④The peple in the hall seemed very nsy，keeping their eyes n me with ____________ (curius)．大厅里的人似乎很爱窥探(别人)，好奇地盯着我看。
2．be related t与……有关系/有关联
be clsely/strngly related t… 与……有密切关系be directly related t… 与……有直接关系related t常在句中作后置定语，相当于which/that引导的定语从句。relate t… 涉及；与……相关relate A t B把A与B联系起来in relatin t… 关于……；与……相比
“与……有关系/有关联”多种表达：be cnnected withbe linked with/tbe invlved inbe assciated withhave smething t d with
单句语法填空①(2019·全国Ⅱ卷七选五) This is quite imprtant，because it ________ __________ yur cmmitment.这一点非常重要，因为它与你的投入直接相关。
is directly related t　
②(北京卷七选五)Fr the risk-seekers，a part f the brain __________ (relate)t pleasure becmes active，while fr the rest f us，a part f the brain __________ (relate)t fear becmes active.对于冒险者来说，大脑中与快乐相关的部分变得活跃起来，而对于我们其他人来说，大脑中与恐惧相关的部分变得活跃起来。③Determining where we are _______________ ur surrundings remains an essential skill fr ur survival.根据我们周围的环境来确定自己身在何处，这是我们生存的一项必不可少的技能。
in relatin t　
3．succeed in ding sth. 成功做某事
And when yur emplyees begin adding smiling emjis t their business cmmunicatin，yu’ll knw yu have succeeded in imprving yur wrk culture. (2020·全国Ⅱ)当你的员工开始在他们的商务交流中加入微笑表情时，你就会知道你已经成功地改善了你的工作文化。
The key t success is t be ready frm the start.成功的关键是从开始就做好准备。The determined astrnaut will surely be successful in her career.这位坚决的宇航员一定会在事业上取得成功。If nthing unexpected happens，the millinaire’s eldest sn will succeed t his estate.如果没有意外的话，这个百万富翁的长子将继承他的财产。
succeed vi. 成功；继承 vt. 接替；继任succeed t… 继承或接替……success n．[U]成功，胜利；[C]成功的人(或事)successful adj. 成功的be successful in… 在……方面成功
After succeeding t his father’s cmpany as president f it successfully，he succeeded in making the cmpany mre successful in its field，which helped t make him a big success in turn.在他成功地继承了父亲的公司并成为公司总裁之后，他使公司在其领域里获得了更大的成功。反过来，公司的成功也成就了他的成功人士的地位。
success是抽象名词，但是当表示“一个成功的人”或者“一件成功的事”时，为可数名词，前面需加不定冠词a，类似的还有surprise，failure等。Failure is the mther f success.失败是成功之母。The film was a great success.这部电影大获成功。
单句语法填空①I never thught such a little child culd _______________________ such a difficult prblem.我从未想过这么小的孩子能成功地处理了这样一个难题。②(2019·全国Ⅲ卷短文改错改编)If I ____________________ (manage)ne cafe，I will pen mre.如果我成功经营了一家咖啡馆，我会开更多的。
succeed in dealing with　
succeed in managing　
③He will _____________________ manager f the firm.他将接替他父亲担任公司的经理。④The painter __________________ hlding a persnal exhibitin in Beijing.这位画家成功地在北京举办了一次个人画展。⑤After _______________ his father’s cmpany as president successfully，he ______________ making the cmpany mre successful，which helped t make him ______________.在他成功地继承了父亲的公司并成为公司总裁之后，他使公司更加成功，这也使他成为一个成功的人。
succeed his father as　
was successful in　
succeeding t　
succeeded in　
a big success　
4．fcus n/upn集中(注意力、精力等)于
The discussin fcused n three main prblems.讨论集中在三个主要问题上。All eyes were fcused n the speaker.大家的目光都集中在发言人身上。
“集中注意力于/全神贯注于……”表达法集锦：cncentrate (ne’s mind/attentin) nbe buried/absrbed/lst inkeep ne’s mind nfcus/fix ne’s mind/attentin nlse neself in/bury neself in
单句语法填空①She has turned dwn several invitatins t star at shws in rder t fcus ___________ her studies.②Catherine was seated in the sfa，ttally absrbed _____ the bk abut yuth and dreams.
完成句子③I can’t _________________________________________________ _____________________________________________________________________________________________________ the bk with him singing next dr.由于他在隔壁唱歌，我不能集中注意力看书。
fcus n/upn或keep my mind n或cncentrate(my attentin/mind) n或fcus/fix my mind/attentin n或be buried/absrbed/lst in或lse/bury myself in　
5．carry n继续做，坚持干
They still carried n in spite f the difficult cnditins.尽管条件艰苦，他们仍然坚持了下去。He carried n a bkstre in the twn.他在城镇上开了一家书店。
The dctr tld her t carry n with the treatment.医生嘱咐她要继续治疗下去。He carried n wrking as if nthing had happened.他若无其事地继续干活。
carry n sth. 从事某事carry n with sth. 继续某事carry n ding sth. 继续做某事carry ut 进行；贯彻；执行；实施carry thrugh 顺利实现carry ff赢得；成功地对付carry frward 成功地进行
单句语法填空①Having read stries f Lin Qiazhi，the girl was determined t carry _____ with her gd wrk.②If yu make a prmise，it shuld be carried ______.③We must carry n _________ (hpe) fr the best.
用carry短语的适当形式填空④The team will have t __________ withut Prfessr Smith.⑤He gave himself a new name t hide his identity when he went t ___________ the secret task.⑥Althugh faced with s many difficulties，they still ______________ their research.
carry n with　
完成句子⑦We hpe that mre artists will __________ and develp the flk art.我们希望更多的艺术家继续发扬并开发这一民间艺术。⑧She is determined t ______________ her business in spite f s many difficulties.尽管有很多困难，她决心继续她的事业。⑨Regular meals give us enugh energy t ___________ ur daily activities.有规律的饮食让我们有足够的能量开展我们的日常活动。
(1)句式分析：这是一个并列句。but连接两个并列的分句，在前一个分句中，These disasters是主语，made是谓语，everyne是宾语，sad and disappinted是形容词作宾语补足语；后面的分句中，主语是the desire，t explre the universe是不定式短语作后置定语，died是谓语。
1．These disasters made everyne sad and disappinted，but the desire t explre the universe never died.这些灾难让每个人都感到悲伤和失望，但探索宇宙的渴望从未消失。
(2)“make＋宾语＋宾补”结构。该结构的具体形式：①make＋名词/代词＋不带t的不定式。当该结构用于被动语态时，不定式符号t要还原。②make＋名词/代词＋过去分词。该过去分词与宾语是动宾关系。③make＋名词/代词＋形容词。表示“使某人或某物变得……”。④make＋名词/代词＋名词。表示“使某人或某物成为……”。⑤make it＋宾补＋不定式(真正的宾语)。it为形式宾语，真正的宾语是不定式。
Every day my parents make me have an egg. ＝Every day I am made t have an egg by my parents.我爸妈每天要我吃一个鸡蛋。It’s t nisy. I can’t make my vice heard.太吵了，我不能让别人听到我的声音。
We must make the rm clean.我们必须把房间打扫干净。We made Tm mnitr.我们让汤姆当班长。The heavy rain made it impssible fr us t g ut.大雨使得我们无法出去。
学习“make＋宾语＋宾补”结构需注意以下几点：①能用过去分词作宾补，但不能用现在分词作宾补；②宾补若是省略t的不定式，变为被动语态时不定式符号t则必须加上；③如果宾补是表示独一无二的职位或头衔的名词，则名词前不用冠词。
单句语法填空①This prduced a chain reactin，which made _____ pssible fr life t develp.②The teacher raised his vice s that he culd made himself ________ (hear)．
单句写作③Mary tried t ______________________ (留我们吃晚饭)．④He believes that the system will _______________________ (让他成为一名更好的医生)．
make us stay fr supper　
make him a better dctr　
(1)句式分析：这是一个主从复合句。主句的主语是scientists，hpe是谓语，后面是省略了连接词that的宾语从句。在宾语从句中使用了nt nly… but als… 。
2．Despite the difficulties，scientists hpe future discveries will nt nly enable us t understand hw the universe began，but als help us survive well int the future.尽管困难重重，科学家希望未来的发现不仅能让我们了解宇宙的起源，而且还能帮助我们在未来活得很好。
(2)nt nly… but (als)…表示“不但……而且……”。该结构用法说明：
Nt nly the students but als the teacher was against the plan.不但学生们反对这个计划，老师也反对。He nt nly read the bk，but als remembered what he had read.他不但读了这本书，而且记得所读的内容。Nt nly des the sun give us light but als it gives us heat.太阳给我们提供光和热。
单句语法填空①Nt nly he but als I _____ (be) fnd f playing the pian.②Nt nly his parents but als his brther __________ (g) t the Summer Palace，and they haven’t been back yet.③Nt nly he but als his parents _______ (be) pleased when the result was annunced.④Either yu r ne f yur students _____ (be) t give a speech at the pening ceremny.
单句写作⑤ __________________________________ (不但我姐姐而且我的父母) like this TV series.一句多译他不但种花，而且种蔬菜。⑥He grws vegetables ___________ flwers.⑦He _______________ flwers __________ vegetables.
Nt nly my sister but als my parents　
as well as　
grws nt nly　
Ⅰ．单词拼写1．A large number f peple escaped t the unsettled ___________ (边远地区)，where there was n war.2．In rder fr astrnauts t get a feel fr what they will be ding in space，they practice n a life-sized space __________ (交通工具)．3．This latest research represents a great leap in ur understanding f the ___________ (宇宙)．4．An inquiry was set up t ____________ (查明) the cause f the accident.
5．Thanks t the technlgy we culd immediately watch the interview which came live by ____________ (卫星) frm distant districts.6．The rcket is designed t _________ (发射) tw cmmunicatin satellites next mnth.7．In 1957 the Sviet Unin successfully launched the first satellite t ________ (环绕运行) the earth.8．Snw White was pisned by an apple. Jack fund a ________ (巨人) thrugh his beanstalk(豌豆茎)，and lk what happened t Alice when she ate the mushrm!
9．I admitted that I was quite frightened when I pened the dr f the clthes cupbard because it gave me the impressin that the skeletn was abut t _______ (跳) ut at me.10．The cmputer is definitely an inventin fr the gd f all __________ (人类)．11．The prcedure is easy and yu can bk at yur lcal travel _________ (代理处)．
12．This is currently the mst efficient way t ___________ (输送) certain types f data.13．Althugh demand fr _______ (数据) delivered by satellite is indeed picking up in Asia，it is mstly fr internal crprate use.14．But many peple fighting against climate change were _______________ (失望的) because it failed t hld dwn temperatures.15．The athlete practiced very hard ut f her strng _________ (欲望) t earn glry fr her cuntry.
disappinted　
make sure，g wrng，succeed in，fcus n，believe in，carry n，n bard，in the hpe f，be independent f，be disappinted at
1．I’m writing t yu ______________ btaining sme infrmatin related t the selectin prcedure f astrnauts.2．As lng as yu ____________ yurself，yu can succeed in slving the prblem.
in the hpe f　
believe in　
3．When things ____________，all f us felt disappinted and sad，but we tried t seek slutins instead f lsing heart.4．She lked arund t ___________ that she was alne and then entered the nearby bar.5．Why nt study at medical cllege like Lin Qiazhi and __________ her super wrk?6．Have the passengers gne __________ yet? The plane t Mexic is abut t take ff.
7．We _____________________ the news that he failed in the electin f astrnauts.8．He graduated frm senir high schl and had the frtune t ____________ getting a place at art cllege.9．He admitted that the infrmatin he gave in the applicatin frm was t general. He shuld have ____________ smething special abut himself.10．It was imprtant t me t __________________ my parents financially and mentally.
were disappinted at　
succeed in　
be independent f　
Ⅲ．完成句子1．I live ______________ meeting with him; but this meeting is nt yet.我活在与他相见的希望中，但这相见的时间还未到来。2．He was _________________________ his pinin amng us.他是我们中最后一个发表意见的人。3．As sn as we went __________，ur ship left prt.我们一上船，船就出港了。
the last persn t express　
4．We will __________ ur discussin tmrrw.我们明天将继续讨论。5．Unfair bsses and rude staff ________________.不公正的老板和粗鲁的店员让我们不愉快。6．Encuraged by what the teacher said，the by returned t his seat，________________________.(determined)受到老师所说的话的鼓励，那个男孩回到了座位上，决心更加努力学习。
make us unhappy　
determined t study harder　
7．By ___________________ il，water，paper，fd，and clthing，we are playing a part in cutting dwn n waste. (fcus)通过关注节约油、水、纸张、食品和衣物，我们在减少浪费方面正发挥着作用。8．The tur guide _____________________________.(signal)导游示意大家跟着她走。
fcusing n saving　
signalled (t) us t fllw her　
Ⅳ．课文语法填空根据课文内容，在空白处填入1个适当的单词或括号内单词的正确形式。Lng lng ag，human beings held a dream that ne day they culd leave Earth and explre space. After many experiments，the scientists succeeded 1. _____ making rckets that culd escape Earth’s gravity and the 2. _____________ (pssible) dream came true.
On 4 Octber 1957，the Sputnik 1 satellite 3. ______________ (launch) by the USSR and successfully rbited arund Earth. On 20 July 1969，American astrnaut Neil Armstrng stepped nt the mn，4. _________ (say)，“That’s ne small step fr [a] man，ne giant leap fr mankind. ”Althugh scientists tried t make sure nthing went wrng，sme accidents still happened，which made everyne sad and disappinted. But the desire 5. ____________ (explre) the universe never died. 6. _____ example f the nging explratin is the Internatinal Space Statin.
was launched　
China’s space prgramme started later than thse f Russia and the US，7. ______ it has develped very fast. In 2003，China sent the Shenzhu 5 spacecraft int space8. ________________ (independent)．Then Shenzhu 6 and 7 cmpleted a secnd manned rbit and the first Chinese spacewalk，9. ___________ (fllw) by the vehicle Jade Rabbit being sent t the mn. Mre recently，China has sent Chang’e 4 t explre the surface f the far side f the mn t make measurements and bservatins.
independently　
Eurpe，the US，and China all have plans t further explre 10. __________(planet) like Mars and Jupiter. Thugh there exist many difficulties，scientists hpe that future discveries will nt nly enable us t understand hw the universe began，but als help us survive well int the future.
解析：1．考查介词。succeed in ding sth. 表示成功做成了某事，故填in。2．考查形容词。空处修饰名词dream，应用形容词，且由语境可知，此处表示不可能(实现)的，故填impssible。3．考查时态和语态。由时间状语On 4 Octber 1957可知，应用过去时，satellite与launch之间为动宾关系，故填was launched。
4．考查非谓语动词。分析句子结构可知，空处在句中作伴随状语，且与主语American astrnaut Neil Armstrng之间为主谓关系，故填现在分词saying。5．考查非谓语动词。由语境可知，此处表示探索宇宙的愿望从未消亡。空处作后置定语，说明desire的内容，故填不定式t explre。6．考查冠词。example在此表示“例子”，为可数名词，此处泛指一个例子，应用不定冠词，example的发音以元音音素开头，故填An。7．考查连词。由语境可知，空处前后之间为转折关系，故填but。
8．考查副词。由语境可知，空处在句中作状语，修饰谓语sent，表示“独立地”，故填副词independently。9．考查非谓语动词。分析句子结构可知，空处在句中作状语，与句子主语之间为动宾关系，故填过去分词fllwed。10．考查名词的数。planet为可数名词，且由空后的Mars and Jupiter可知，此处应用复数形式。故填planets。
Ⅴ． 结合课文主题，使用本单元词汇与句型写一篇50词左右的短文1．人们一直梦想着探索太空(explre space)，然而一些人认为到太空旅行(travelling int space)是不可能的。2．经过多次的实验之后，苏联在1957年成功地发射了第一颗卫星(launch the first satellite)。尤里·加加林在1961年成为第一个登上太空的人(the first persn t g int space)。3．因此(as a result)，人类探索太空的梦想得以实现。
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