高三英語總復(fù)習(xí) 第一部分 回歸教材 Unit 3 Computers課時(shí)作業(yè) 新人教版必修2

1、unit 3 computers.閱讀理解every few years comes a fitness trend that has people scratching their heads in amazement. “crunning” will probably be one of them. the “c” stands for “crawling”(爬行). this new sport needs two­legged humans running on all fours!the funny idea is the brainchild of shaun mccar

2、thy. the 34­year­old is convinced that it will revolutionize fitness as we know it. according to the sports enthusiast, “the only thing that crunning's changed about fitness is that it's changed everything about fitness.”mccarthy has no scientific evidence to prove that crunning is

3、 more efficient than traditional two­legged running. however, he believes it is a more effective way to exercise because it puts an emphasis on the shoulders and arms, providing a complete body workout. mccarthy also says crunning seems to tire him out more. he therefore concludes that the unco

4、nventional exercise is a bigger calorie burner than normal running.while experts generally agree that crunning may provide a better workout, many are not sure if it is the right exercise for humans. fitness coach kevin dean says we are not built to be on all fours and our wrists are therefore not as

5、 strong as our ankles. he believes crunning, which he calls a fad(時(shí)尚), could result in bad wrist and shoulder injuries, not to mention broken noses.but mccarthy is not worried. since the release of his crunning video a few weeks ago, many melbourne residents have been seen scampering around on all f

6、ours. as it turns out they are not the only ones. in the chinese city of zhengzhou, crawling, a much slower version of crunning, has been a favorite activity for many years. according to some enthusiasts, the light exercise that is believed to date back two thousand years to the han dynasty, is good

7、 for curing back and spine ailments.ready to give crunning a try? then mccarthy recommends investing in some good shoes, hardy gloves and most important of all, a face mask!1what can we learn about crawling according to kevin dean?aour ankles are stronger than our wrists.bcrawling is an efficient wa

8、y to work out.cthe city of zhengzhou is the origin of crawling.dcrawling can burn more calories than normal running.2what does the author think of crunning?adangerous.binteresting.cbeneficial. dunbelievable. 3why does mccarthy suggest people wearing a face mask when crunning?ato amuse other people.

9、bto avoid being recognized. cto protect the nose from being injured.dto prevent sweat dropping on the ground.4what is the text mainly about?aa new way of crawling.ba new trend of exercising.ca scientific discovery. da traditional way to keep fit.答案與解析本文講述的是跑步、游泳、打球都能起到強(qiáng)身健體的作用，但是你聽說過通過爬行來健身嗎？這是一種更有效的

10、鍛煉方式，因?yàn)樗阎攸c(diǎn)放在肩部和臂部，提供一個(gè)完整的身體鍛煉。在本文中作者介紹了一種新的健身方式爬行。1a推理判斷題。根據(jù)kevin dean的理論可知，他認(rèn)為我們的腳踝比我們的手腕更強(qiáng)壯。故選a。2b推理判斷題。根據(jù)第二段首句the funny idea is the brainchild of shaun mccarthy.可以推斷出作者認(rèn)為這種健身方式很有趣。故選b。3c推理判斷題。根據(jù)第四段末句he believes crunning, which he calls a fad (時(shí)尚)，could result in bad wrist and shoulder injuries,

11、not to mention broken noses.可知爬行容易傷到鼻子。故選c。4b主旨大意題。跑步、游泳、打球都能起到強(qiáng)身健體的作用。但在本文中作者介紹了一種新的健身方式爬行。故選b。.七選五(2017·海南省瓊海市嘉積中學(xué)質(zhì)檢)how to protect yourself from hackers onlinean increase in cyber­attacks (網(wǎng)絡(luò)攻擊) makes the internet seem like a scary place these days. how can individuals protect or make i

12、t more difficult for hackers to access their information? here are several tips that can help you protect against cyber­attacks：_1_hard passwords include upper and lower case letters, numbers and special characters. they should be at least eight characters in length. they should also not spell

13、out words easy for hackers to find, like your pet's name or the name of a family member.change your password regularlya very common mistake made by users is to create one hard password, but then never change it. remembering a long list of complicated passwords can be difficult. but no password i

14、s unbreakable. hackers are better able to hack multiple accounts if those accounts all have the same password. a password management service, like dashlane or passwordbox, can help you keep track of hard passwords._2_clear your browser (瀏覽器) historythis goes for all the devices you use in a dayyour

15、home computer, your work computer, or your friend's ipad. internet browsers like firefox or chrome keep track of where you've been and what you've done online. they keep records of every site you visited. _3_ it is very easy for anyone who sees that information to steal a detailed record

16、 of your online activities.do not use free wi­fi_4_ often, a user does not need a password to connect to these wireless networks. these services might be useful, but they're also an easy way for hackers to access everything on your device.use anti­virus protectionthere are many anti

17、73;virus services available for users. _5_ some anti­virus services are even free. they are a great way to have a professional help keeping users one step ahead of hackers.abe careful while using thumb drivebthese services permit users to easily store and secure their passwords.cmake your passw

18、ord harder to hackdthey can offer many different types of computer protection.ean increasing number of public places now offer free wireless access to the internet.finformation about what you sent from or saved on your computer can be kept for days or weeks.gunless you really need it, it is best not

19、 to use it.答案與解析介紹性說明文。如何保護(hù)電腦免受黑客攻擊？本文作者提出幾個(gè)有效的建議：設(shè)置高難度密碼；常常更換密碼；清除瀏覽器記錄；勿使用免費(fèi)wifi；使用殺毒軟件。1c主旨大意題。根據(jù)下文闡述的內(nèi)容：高難度密碼最少有八個(gè)字符長度。包括大小寫字母，數(shù)字和生僻漢字等。這樣做的目的是使密碼難以被黑客破譯。故c項(xiàng)切題。2b上下文銜接題。根據(jù)中心句“change your password regularly”以及上文“a password management service, like dashlane or passwordbox, can help you keep track

20、of hard passwords.”可知，密碼要經(jīng)常換。密碼管理服務(wù)軟件，像dashlane 和 passwordbox會(huì)幫助用戶很容易儲(chǔ)存和保護(hù)密碼，使得黑客難以攻破。故b項(xiàng)切題。3f上下文銜接題。因?yàn)樵陔娔X中你發(fā)送和儲(chǔ)存的信息會(huì)保持幾天或幾個(gè)星期，所以“it is very easy for anyone who sees that information to steal a detailed record of your online activities.(很容易讓人竊取你在線活動(dòng)的詳細(xì)記錄)”。故f項(xiàng)切題。4e上下文銜接題。很多公眾場合都提供免費(fèi)的網(wǎng)絡(luò)路徑。所以“often, a

21、 user does not need a password to connect to these wireless networks.(用戶不用密碼就可以進(jìn)入網(wǎng)絡(luò))” 。故e項(xiàng)切題。5d上下文銜接題。“there are many anti­virus services available for users.(電腦用戶有很多殺毒設(shè)施)”，所以它們給電腦提供多種多樣的保護(hù)。故d項(xiàng)切題。.語法填空(2017·哈爾濱師范大學(xué)附屬中學(xué)調(diào)研)online shopping is coming into fashion in most cities, where people a

22、re able to make full use of the rapidly­developed internet technology. nowadays, can we find a person _1_hasn't experienced online shopping? definitely not. online shopping _2_ (welcome) by most people due to various reasons. from the perspective of consumers, it can save some time for peop

23、le who don't have much spare time. just click the mouse, they can get _3_ they want while staying at home. for the retailers, it can cut some costs for those who don't have enough circulating funds. _4_ (compare) with the traditional trade mode, they don't have to spend money in renting

24、a house. _5_，there are still some disadvantages in online shopping. first, a face­to­face deal makes online shopping less reliable and trustworthy. second, people will lose _6_ fun of bargain._7_ is undeniable that shopping on the internet has become an irresistible trend in modern society

25、. it's _8_ great urgency that we need to make the relative laws _9_ the rapid growth of online shopping. only in this way can we enjoy the pleasure and _10_ (convenient) of online shopping without the concern of being cheated. 答案與解析網(wǎng)購現(xiàn)象越來越普遍，文章講述了其原因、優(yōu)缺點(diǎn)及如何使之更規(guī)范。1who/that考查定語從句。句意：現(xiàn)在你能找到?jīng)]有網(wǎng)購體驗(yàn)的人

26、嗎？定語從句中先行詞a person指人，從句可用who/that引導(dǎo)且在從句中作主語。故填who/that。2is welcomed考查時(shí)態(tài)語態(tài)。句意：因?yàn)楦鞣N原因網(wǎng)上購物被很多人歡迎。online shopping與welcome之間為被動(dòng)關(guān)系，且主語為單數(shù)，故應(yīng)用被動(dòng)語態(tài)。故填is welcomed。3whatever/what考查連接代詞。句意：只是點(diǎn)擊鼠標(biāo)，他們能在家里就得到想要的東西。what/whatever引導(dǎo)賓語從句，并在從句中作賓語。故填what/whatever。4compared考查非謂語動(dòng)詞。句意：和傳統(tǒng)的交易模式相比，他們不用花錢租房子。compared with“

27、與相比”，是固定用法。故填compared。5however考查副詞。根據(jù)上下文可知，句子前后為轉(zhuǎn)折關(guān)系，且用逗號隔開，應(yīng)用副詞however。6the考查冠詞。句意：人們失去討價(jià)還價(jià)的樂趣。特指“討價(jià)還價(jià)的樂趣”用定冠詞。故填the。7it考查代詞。句意：毋庸置疑，網(wǎng)購已經(jīng)成為現(xiàn)代社會(huì)中不可抗拒的潮流。it作形式主語，代替that引導(dǎo)的主語從句。故填it。8of考查介詞。句意：我們需要制定相關(guān)的法律是非常緊急的。用be of抽象名詞be形容詞。故填of。9with考查介詞。句意：隨著網(wǎng)上貿(mào)易的迅速增長。with復(fù)合結(jié)構(gòu)作伴隨狀語。故填with。10convenience考查名詞。由空前的pl

28、easure可知此處應(yīng)填名詞形式與之并列。故填convenience。.短文改錯(cuò)(2017·閬中中學(xué)校檢測)my father and i enjoy fishing.one sunday morning we go fishing at a lake. we took ours fishing poles and headed for the lake. as soon as we arrived, so we dropped the lines into the water. before waiting for about half an hour, i was beginni

29、ng to get impatiently. i wanted to give up, and my father told me to wait a little longer. finally, there were a sudden pull at the pole and a fish caught. within the next few minute, my father also caught a fish.felt hungry, we built a fire by the lake and barbecued the fish. it was delicious.答案my

30、father and i enjoy fishing.one sunday morning we fishing at a lake. we took fishing poles and headed for the lake. as soon as we arrived, we dropped the lines into the water. waiting for about half an hour, i was beginning to get . i wanted to give up, my father told me to wait a little longer. finally, there a sudden pull at the pole and a fish caught. within the next few ， my father also caught a fish. hungry, we built a fire by the la