2020-2021学年Unit 2 Looking into the Future课时作业

这是一份2020-2021学年Unit 2 Looking into the Future课时作业，共8页。试卷主要包含了A.pain B，A.cmpared B等内容，欢迎下载使用。
A
Sir Jhn Gurdn, a British scientist, wh wn the Nbel Prize in Physilgy r Medicine in 2012, said he had predicted at the time f his frg experiments that the successful clning f a mammal wuld happen within 50 years, and that “maybe the same answer is apprpriate” fr the step t human clning.Parents wh lse children in accidents may be able t clne “cpies” t replace them then.
Althugh any attempt t clne an entire human wuld raise cmplex mral issues, the bilgist claimed peple wuld sn vercme their cncerns if the technique became medically useful.Clning was regarded with extreme dubts when it was first develped but became widely accepted after the birth f Luise Brwn, the first“test­tube baby”．He said，“When my first frg experiments were dne, an American reprter asked hw lng it wuld be befre these things culd be dne in mammals r humans.I said，‘Well, it culd be anytime between 10 years and 100 years — hw abut 50 years？’ It turned ut that it wasn't far ff the mark as far as Dlly was cncerned.Maybe the same answer is apprpriate.” Sir Jhn added that clning a human being effectively means making an identical twin, and dctrs wuld therefre simply be “cpying what nature has already prduced”．
The average vte n allwing parents f deceased children, wh are n lnger fertile(能生育的), t create anther by using the mther's eggs and skin cells frm the first child, thinking the technique was safe and effective, is 60 percent in favr.The reasns fr “n” are usually that the new children wuld feel they are sme srt f replacements fr smething.
语篇解读：本文是一篇说明文。文章主要介绍了诺贝尔生理学或医学奖得主、英国科学家约翰·格登爵士称，那些在事故中失去子女的父母将有可能在未来50年内借助克隆技术得到孩子的“复制品”。
1．Sir Jhn predicted the human clning wuld be a reality in at mst.
A．abut 100 years B．abut 60 years
C．abut 50 years D．abut 10 years
解析：选C 细节理解题。根据第一段可知，约翰·格登爵士表示，在未来50年内，那些在事故中失去孩子的父母将有可能通过克隆技术得到孩子的“复制品”。故选C项。
2．Accrding t the text, which statement is NOT true?
A．Luise Brwn is the first “test­tube baby”．
B．Human clning is still a cntrversial tpic.
C．Sir Jhn is psitive abut the future f human clning.
D．Human clning is creating smething that didn't exist befre.
解析：选D 细节理解题。根据第二段中的after the birth f Luise Brwn, the first “test­tube baby”可排除A项；文章尾段说明赞成者占6成，故排除B项；根据第二段中约翰·格登爵士的话可知，他对克隆人充满了希望，故排除C项；根据第二段的尾句可知，D项表述不正确。
3．The underlined wrd “identical” prbably means “ ”．
A．same B．special
C．new D．clear
解析：选A 词义猜测题。根据画线词后的twin和后文的dctrs wuld therefre simply be “cpying what nature has already prduced”可知，A项正确。
4．It can be inferred frm the passage that ．
A．mst peple cast dubt n Jhn's experiments
B．human clning is and will be nly a dream
C．few children lve t be clned in the future
D．human clning may be realized smeday
解析：选D 推理判断题。根据第二段第一句可知，虽然克隆人类的尝试将引起复杂的道德问题，但是生物学家声称如果克隆技术变得有医学价值，人们很快就会消除他们的担心，因此可推断D项正确。
B
The human brain cntains 10 thusand millin cells(细胞) and each f these may have a thusand cnnectins.Such great numbers used t discurage us and cause us t stp thinking abut the pssibility f making a machine with humanlike ability, but nw that we have grwn used t mving frward at such a speed, we can be less sure.Quite sn, in nly 10 r 20 years, perhaps, we will be able t build a machine as cmplex(复杂的) as the human brain, and if we can, we will.It may then take us a lng time t make it as intelligent as the human brain by prperly prgramming it.
I think it is certain that in decades, nt centuries, machines f silicn (硅) will arise t cmpete with their human ancestrs.In a real sense they will be able t reprduce themselves.Silicn will have ended carbn's lng cntrl.And we will n lnger be able t cnsider urselves t be the finest intelligence in the wrld.
As the intelligence f rbts increases and their cst ges dwn, we may achieve a lt with their help, first n the earth thrugh their ability t cmplete any kind f wrk in harmful envirnments.In the end, deserts (沙漠) may turn int gardens.Further ahead, by a cmbinatin f the great wealth this new age will bring and the technlgy it will prvide, the creatin f a huge, man­made wrld in space, hme t thusands r millins f peple, will be within ur pwer.
语篇解读：本文是一篇说明文。文章主要介绍了机器人可能给人类未来生活带来的改变。
5．In the authr's pinin, the human brain ．
A．is cmplex and intelligent
B．is t cmplex t be reprduced
C．may change a lt in 10 r 20 years
D．will sn be replaced by machines
解析：选A 细节理解题。由第一段中的as cmplex (复杂的) as the human brain和as intelligent as the human brain可知，作者认为人类的大脑十分复杂而且非常聪明，故选A项。
6．The underlined wrd “carbn” in Paragraph 2 stands fr ．
A．human beings B．an ld machine
C．an cean animal D．intelligent rbts
解析：选A 词义猜测题。由该段中的machines f silicn (硅) will arise t cmpete with their human ancestrs可知，carbn在此是指代人类(碳基生命是以碳元素为有机物质基础的生物，地球上已知的生物，包括人类在内，大多数都是碳基生命)，故选A项。
7．In the last paragraph, the authr mainly ．
A．talks abut the intelligence f rbts
B．explains hw t create a wrld in space
C．describes what ur future life might be
D．shws his wrry abut the envirnment
解析：选C 段落大意题。作者在尾段中主要就人类未来的生活简单地进行了描绘，故选C项。
Ⅱ.完形填空
My husband and I didn't have any family nearby, s Christmas hliday always made me feel a little 1 ．
Then ne year, I had a thught, “Let's thrw a party！” We had 2 wh weren't ging t see their families either.Why nt fix a meal and 3 a new traditin? My husband als lved the idea.Bth f us gt 4 ．
Then we began t invite friends.Our list grew larger and 5 we had a party f eight peple.Christmas quickly arrived.We gt busy decrating and 6 ．In ur excitement we had prepared a great 7 cmpared t ur nrmal dinner.“Let's hpe all f them will cme.”But it was already ten minutes after their scheduled arrival time and n ne had 8 ．As the first guest arrived, we let ut a huge sigh f 9 ．
Sn ur small apartment became czy with peple.Our guests 10 themselves t each ther and frmer strangers became friends.We went arund the table, 11 ur favrite Christmas memries.A Christmas that I had been 12 had becme a day t bnd and share 13 ．
Thrughut the years, the 14 f the Christmas party didn't change.I'm glad I reached ut t friends that December.I'm even mre thankful that they 15 and shared the day with us.Actually, friends are family yu chse fr yurself.
语篇解读：本文是一篇记叙文。文章主要讲述了作者和丈夫两个人独自在异乡生活，每年圣诞节的时候尤其觉得孤独，因此他们便开始邀请和他们一样的朋友一起过圣诞，并且多年一直坚持这个传统。
1．A.tired B．angry
C．relaxed D．lnely
解析：选D 由空前My husband and I didn't have any family nearby 可判断出，作者和丈夫都离家人很远，所以每年的圣诞节总是让作者感到有些孤独。
2．A.neighbrs B．friends
C．clleagues D．relatives
解析：选B 由下文他们邀请的对象可判断出，他们有一些朋友在圣诞节也见不到家人。第5空前的invite friends 有提示。
3．A.maintain B．create
C．break D．cntinue
解析：选B 由空前后的语境可知，作者想要在他们家举办一个圣诞聚会，创造一个新的传统。
4．A.nervus B．embarrassed
C．excited D．shcked
解析：选C 作者的丈夫很喜欢她的这一想法，他们都为此感到兴奋。
5．A.suddenly B．regularly
C．naturally D．eventually
解析：选D 由空后的内容可判断，名单上的客人越来越多，最终他们邀请了八位朋友。
6．A.dnating B．delivering
C．painting D．cking
解析：选D 根据下一句we had prepared a great 7 cmpared t ur nrmal dinner可知，他们忙着装饰，忙着做饭。
7．A.feast B．surprise
C．trip D．service
解析：选A 由空后cmpared t ur nrmal dinner可判断，我们准备了一桌盛宴。
8．A.turned away B．shwn up
C．held n D．gne ahead
解析：选B 上句描述他们期待着所有客人都能来。由本句中的But 可知，超过约定的时间十分钟了，却没有一位客人出现。
9．A.pain B．impatience
C．sadness D．relief
解析：选D 当第一位客人来的时候，作者和丈夫松了一口气。
10．A.cmpared B．cnnected
C．intrduced D．changed
解析：选C 由空前后的语境可判断，客人们互相介绍着彼此，曾经的陌生人此刻成为了朋友。
11．A.discussing B．classifying
C．cnsidering D．sharing
解析：选D 由下文的becme a day t bnd and share 13 可推断出，“我们”围着桌子分享着对过去圣诞节的记忆。
12．A.fearing B．dubting
C．admiring D．ignring
解析：选A 这里呼应文章开头的内容，一直让“我”害怕到来的圣诞节，如今变成了“我们”相聚在一起用餐，一起分享经历的一天。
13．A.pinins B．experiences
C．answers D．interests
解析：选B 参考上题解析。
14．A.principle B．duty
C．traditin D．rule
解析：选C 由空前后的语境可知，多年过去了，圣诞聚会的传统一直没变。第3空后的a new traditin有提示。
15．A.interrupted B．predicted
C．repeated D．respnded
解析：选D 让“我”更感激的是朋友们响应并和“我们”一起分享那一天。
Ⅲ.语法填空
In tday's wrld f mbile payment, all we really need 1 (survive) is a smartphne.But ne cmpany is hping t make traditinal wallets cl again, by 2 (bring) them int the digital age.
Armenian firm Vlterman's smart wallet takes security t a new level.It's fitted with different technlgies, such as 3 alarm, a GPS tracker, and even a camera.If yur smartphne and wallet becme separate, the alarm will warn yu 4 yu dn't leave it behind.And if yur wallet 5 (lse) r stlen, the GPS tracker can help yu reach it.
Even 6 (interesting) is the frnt­facing camera.“If smene dares t pen yur wallet 7 permissin, a little camera inside 8 (take) a picture and send it t yur mbile phne.Yu will find it 9 (easy) by receiving a picture f the thief，” Azat Tvmasyan, Vlterman's funder, tld news site Banks.am.
The high­tech wallet will be released later this year and will cme in three 10 (mdel), with the cheapest expected t cst ＄179.
语篇解读：本文是一篇说明文。文章主要介绍了一种即将上市的智能钱包。
1．t survive 考查非谓语动词。we really need为all的定语从句，在定语从句中不定式作目的状语，故填t survive。
2．bringing 考查非谓语动词。根据空前的介词by可知，空处作该介词的宾语，应用动名词形式，故填bringing。
3．an 考查冠词。根据该句中的a GPS tracker, and even a camera并结合语境可知，该处泛指“一个警报器”，且alarm的发音以元音音素开头，故填an。
4．s 考查连词。根据空处前后的句意可知，空处前后表示因果关系，故填s。
5．is lst 考查动词的时态、语态和主谓一致。if引导的条件状语从句中可用一般现在时表示将来，故空处用一般现在时；根据语境可知，空处表示钱包被丢失，主语yur wallet为第三人称单数形式，故填is lst。
6．mre interesting 考查形容词的比较级。上文介绍了如果你的钱包丢失或被盗，GPS跟踪器可以帮助你找到的情况，结合该句中的Even可知，此处表示“更令人感兴趣的是前置摄像头”，故该处用形容词的比较级，故填mre interesting。
7．withut 考查介词。根据语境可知，如果有人胆敢在未经允许的情况下打开你的钱包，里面的一个小相机就会拍下照片并发送到你的智能手机上。withut permissin意为“未经允许”，故填withut。
8．will take 考查动词的时态。分析句子结构可知，该句为主从复合句，从句为if引导的条件状语从句，使用了一般现在时，故主句用一般将来时，故填will take。
9．easily 考查词性转换。空处修饰动词find，应用副词形式，故填easily。
10．mdels 考查名词的单复数。mdel为可数名词，根据空前的数词three可知，该处用复数形式，故填mdels。