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計(jì)算機(jī)技能
There is no denying that students should learn something about how computers work, just as we expect them at least to understand that the internal combustion engine(內(nèi)燃機(jī)) has something to do with burning fuel, expanding gases and pistons (活塞) being driven. For people should have some basic idea of how the things that they use do what they do. Further, students might be helped by a course that considers the computer's impact on society. But that is not what is meant by computer literacy. For computer literacy is not a form of literacy(讀寫能力);it is a trade skill that should not be taught as a liberal art.
Learning how to use a computer and learning how to program one are two distinct activities, A case might be made that the competent citizens of tomorrow should free themselves from their fear of computers. But this is quite different from saying that all ought to know how to program one. Leave that to people who have c hosen programming as a career. While programming can be lots of fun, and while our society needs some people who are experts at it, the same is true of auto repair and violin making.
Learning how to use a computer is not that difficult, and it gets easier all the time as programs become more“user?friendly”. Let us assume that in the future everyone is going to have to know how to use a computer to be a competent citizen. What does the phrase “l(fā)earning to use a computer”mean? It sounds like “l(fā)earning to drive a car”, that is, it sounds as if there is some set of definite skills that, once acquired, enable one to use a computer.
In fact,“l(fā)earning to use a computer”is much more like“l(fā)earning to play a game”, but learning the rules of one game may not help you play a second game, whose rules may not be the same. There is no such a thing as teaching someone how to use a computer. One can only teach people to use this or that program and generally that is easily accomplished.
這是篇議論文,主要討論了掌握計(jì)算機(jī)技能的問題。
1. To be the competent citizens of tomorrow, people should _______.
A) try to lay a solid foundation in computer science
B) be aware of how the things that they use do what they do
C) learn to use a computer by acquiring a certain set of skills
D) understand that programming a computer is more essential than repairing a car
2. In the second paragraph “violin?making”is mentioned to show that _______ .
A) programming a computer is as interesting as making a violin
B) our society needs experts in different fields
C) violin making requires as much skill as computer programming
D) people who can use a computer don't necessarily have to know computer program-ming
3. Learning to use a computer is getting easier all the time because _______ .
A) programs are becoming less complicated
B) programs are designed to be convenient to users
C) programming is becoming easier and easier
D) programs are becoming readily available to computer users
4. According to the author,the phrase“l(fā)earning to use a computer”(Lines3,4,Para.3)means learning _______.
A) a set of rules B) the fundamentals of computer science
C) specific programs D) general principles of programming
5. The author's purpose in writing this passage is _______.
A) to stress the impact of the computer on society
B) to explain the concept of computer literacy
C) to illustrate the requirements for being competent citizens of tomorrow
D) to emphasize that computer programming is an interesting and challenging job
參考答案及解析
1、[答案及分析]:[C]是文章第2段的意思:學(xué)習(xí)使用計(jì)算機(jī)并非學(xué)習(xí)編制計(jì)算機(jī)程序。必須使得將來的合格的公民對學(xué)習(xí)計(jì)算機(jī)不再有畏懼感。這并不是要求人們都應(yīng)該懂得如何編程,那是以編制序?yàn)槁殬I(yè)的人的事。
2、[答案及分析]:[D]第2段的意思是:盡管編制程序可能很有趣味,盡管社會需要有人精通編程,如同需要有人精通修理汽車和制造小提琴。但是,學(xué)習(xí)計(jì)算機(jī)并非要求大家都學(xué)會編程,正如我們只需會開車就行,不必懂得修理汽車;只需會使用小提琴,而不必了解如何制作小提琴。故而D項(xiàng)正確。
3、[答案及分析]:[B]依據(jù)為第3段第1句話。
4、[答案及分析]:[C]該題具有一定難度,關(guān)鍵在于對第3段最后兩句話的正確理解:何謂“學(xué)習(xí)使用計(jì)算機(jī)”?“學(xué)習(xí)使用計(jì)算機(jī)”聽起來(sound like)跟“學(xué)習(xí)開車”一樣,似乎(as if)只要掌握了一些確定的技巧就能學(xué)會使用它。在第4段,作者又說:其實(shí)(in fact),“學(xué)習(xí)使用計(jì)算機(jī)”更像“學(xué)習(xí)玩游戲”,掌握了一種游戲的規(guī)則并不能使你會玩另一種游戲,因?yàn)閮煞N游戲的規(guī)則不同……。只能教一個(gè)人使用這種或那種程序,而這一般都能比較容易地做到。
5、[答案及分析]:[B]主旨題。文章的主旨應(yīng)能恰如其分地概括文中所闡述的內(nèi)容,面不能太窄,即:不足以概括全部內(nèi)容;但是面也不能太寬,即:包含了文中沒有闡述的內(nèi)容。根據(jù)這一原則,只有B項(xiàng)才能概括全文要說明的問題。A、C、D都是作者在討論computer literacy這一問題時(shí)所涉及的幾個(gè)方面,而并非中心內(nèi)容,故可排除。
如何查看國際航班安全
Checking International Airline's Safety
You can check fares, fees and flight schedules for just about any airline in the world with a few keystrokes or a single phone call. But checking the safety of an international airline is a much more complicated task.
European and US regulators evaluate aviation safety, and the airline industry itself has a world-wide safety-audit program, but it's difficult for travelers to check airline safety when buying tickets. There's no restaurant-inspector's score posted on the airplane door or government crash-test star rating printed on your ticket.
That's unfortunate, since interest in airline safety is high. It's been a bad year for aviation fatalities, with more than 700 people killed in 16 crashes around the world so far in 2009. Many involved little-known airlines---some already on watch lists for safety concerns.
"There's no perfect solution at the moment, but it's undoubtedly getting better," said Geoff Want, principal adviser on airline safety at Rio Tinto Group, a global mining company that has its own list of carriers approved for employee travel.
Government regulators in Europe and the US take different approaches to aviation safety.
The European Union evaluates airlines and their planes and publishes a "blacklist" of unacceptable carriers, most recently updated just two weeks ago. The EU blacklist is available on the Internet at ec.europa.eu/transport/(click on "Air," then "List of airlines banned within the EU")
Be prepared, it's long and complex: 233 airlines are completely banned, and eight are allowed to operate under restrictions and conditions. Though its focus started as an airline-by-airline evaluation, the EU has moved more toward building the blacklist on evaluations of entire countries -all airlines from 15 countries have a blanket ban from the EU and are among the 233 cited.
The US Federal Aviation Administration evaluates countries, not carriers. US inspectors decide if a country's aviation infrastructure is up to snuff by counting the number of inspectors watching over airlines, assessing air-traffic-control procedures and evaluating funding and legal authority of aviation regulators. The FAA evaluation is based largely on standards set by the International Civil Aviation Organization, a United Nations-chartered group. (US airlines are required to meet or exceed international safety standards.)
The FAA says 101 countries have been assessed; 79 have Category 1 status, meaning the US believes the country meets international standards, and 22 fall into Category 2. Category 2 doesn't mean airlines from that country are banned, only that any new service and airline passenger-sharing ties are frozen. That can have economic impact on a country and its airlines, and the threat of a Category 2 downgrade can prompt improvement.
An FAA spokeswoman says its International Aviation Safety Assessments list, available atwww.faa.gov/about/initiatives/iasa. is "one tool a consumer can use to decide on air travel."
There's surprisingly little overlap between the FAA and EU lists. Airlines from Angola, Benin, Kazakhstan, Kyrgyz Republic, Liberia, Gabon, Sierra Leone, Sudan, Afghanistan, Cambodia, Rwanda and Zambia are banned on the EU blacklist, but those countries aren't evaluated at all by the FAA. B0th EU and US regulators share concerns on Congo, Indonesia and Swaziland. The FAA rates Zimbabwe, Israel, the Philippines, Serbia and Montenegro plus several Latin American and Caribbean nations, including Belize, Haiti, Honduras and Nicaragua, in Category 2, but not the EU.
The airline industry has come up with its own list of sorts, and it can be useful to travelers. The International Air Transport Association (IATA), the industry's world-wide trade group, began working on a standard auditing regimen nine years ago, and it has evolved into an extensive safety check now required of all airlines to be a member of IATA. Passing the audit became mandatory for membership earlier this year; 21 airlines didn't and were removed.
IATA says 330 airlines around the world have passed its audit. Of those, 230 are IATA members-another 100 airlines wanted to be certified even if not IATA members. US and EU regulators accept IOSA certification to meet requirements that airlines funneling passengers to each other through code-sharing agreements audit each other for safety issues. And a few countries -Egypt is one -require IOSA certifìcation for any airline flying there. The list is available atwww.iata.org/iosa.
如何查看國際航班安全
如果你想查看世界上任何航空公司的票價(jià)、收費(fèi)以及航班安排,只需點(diǎn)擊幾下鼠標(biāo)或者打個(gè)電話就行。但是,如果你想知道某個(gè)國際航空公司的安全系數(shù),那可要復(fù)雜得多。
歐洲和美國的監(jiān)管機(jī)構(gòu)都會評估航空公司的安全性,航空業(yè)本身也有一套全球安全審查系統(tǒng),但是,旅客在購買機(jī)票的時(shí)候很難了解到航空公司的安全性。機(jī)艙門口可沒有貼著類似餐館檢驗(yàn)機(jī)構(gòu)評分的東西,旅客的機(jī)票上也沒有印著政府失事概率測試的星級評級。
這是一個(gè)很不幸的事實(shí),因?yàn)榇蟊妼娇展景踩缘年P(guān)注度非常高。2009年是航空災(zāi)難記錄非常糟糕的一年,全球共發(fā)生飛機(jī)失事事故16起,超過700人死亡。許多事故都與名不見經(jīng)傳的航空公司有關(guān),其中一些因其安全顧慮已經(jīng)被列入觀察名單。
礦業(yè)公司力拓集團(tuán)負(fù)責(zé)航空安全的主管顧問杰夫·華恩特表示,目前還沒有完美的解決辦法,但是情況無疑正在好轉(zhuǎn)。力拓集團(tuán)有一份航空公司名單,員工旅行只選擇這個(gè)名單上航空公司的航班。
歐洲和美國的政府監(jiān)管部門對航空安全則采取了不同的方式。
歐盟會對航空公司及其機(jī)隊(duì)進(jìn)行評估,并會發(fā)布一個(gè)不合格的航空公司的"黑名單",就在兩周前剛剛更新過一次。歐盟的黑名單可以通過互聯(lián)網(wǎng)在ec.europa.eu/transport/上查到(點(diǎn)擊“航空”,接著就是“歐盟禁飛的航空公司名單”)。
不過要有心理準(zhǔn)備,這個(gè)名單很長,也很復(fù)雜:共有233家航空公司被完全禁飛,八家航空公司被允許在某些限制和條件下飛行。雖然歐盟的關(guān)注點(diǎn)開始是對航空公司逐個(gè)進(jìn)行評估,但是歐盟近來已經(jīng)更多地通過對整個(gè)國家的評估來構(gòu)建黑名單一→其中有15個(gè)國家的所有航空公司收到的都是歐盟的全面禁令,它們也在上述233家航空公司之列。
美國航空管理局評估的對象是各個(gè)國家、而不是航空公司。美國監(jiān)管機(jī)構(gòu)通過計(jì)算航空業(yè)監(jiān)管機(jī)構(gòu)配備的人員數(shù)量、評估航空運(yùn)輸量的控制流程以及航空監(jiān)管機(jī)構(gòu)的融資和法律權(quán)限,來決定一個(gè)國家的航空業(yè)是否會進(jìn)入“黑名單”。美國聯(lián)邦航空管理局的評估大多數(shù)基于聯(lián)合國下屬專門機(jī)構(gòu)國際民用航空組織制定的標(biāo)準(zhǔn)(美國航空公司必須達(dá)到或者超過國際安全標(biāo)準(zhǔn))。
美國航空管理局表示,已經(jīng)對101個(gè)國家進(jìn)行了評估179個(gè)國家為一類,表示美國認(rèn)為這些國家已經(jīng)達(dá)到國際安全標(biāo)準(zhǔn);22個(gè)國家為二類。二類并不表示來自這些國家的航空公司會被禁飛,只是說明任何新服務(wù)和航空公司乘客分享關(guān)系將被凍結(jié)。這會對一個(gè)國家及其航空公司產(chǎn)生經(jīng)濟(jì)影響,而二類國家會面臨降級的威脅,這可以促使航空公司改善其安全性。
美國航空管理局一位發(fā)言人表示,其國際航空安全評估名單可以在www.faa.gov/about/initiatives/iasa上找到,這是“消費(fèi)者可以用來決定航空旅行選擇的一個(gè)工具”。
出人意料的是,美國航空管理局和歐盟的名單很少有重合。來自安哥拉、貝寧、哈薩克斯坦、吉爾吉斯、利比亞、加蓮、塞拉利昂、蘇丹、阿富汗、柬埔寨、盧旺達(dá)和贊比亞的航空公司都在歐盟禁飛名單之上,但是這些國家甚至都沒有被美國航空管理局評估過。歐盟和美國的監(jiān)管機(jī)構(gòu)都對剛果、印度尼西亞和史瓦濟(jì)蘭的航空公司表示顧慮。美國航空管理局將贊比亞、以色列、菲律賓、塞爾維亞和黑山,還有幾個(gè)拉美和加勒比海國家,包括伯利茲、海地、洪都拉斯和尼加拉瓜,列為二類國家,但是歐盟并未對國家有類似的評級。
航空業(yè)也有自己林林總總的名單,可能會對旅客有所幫助。航空業(yè)的全球行業(yè)團(tuán)體國際航空運(yùn)輸協(xié)會(International Air Transport Association,簡稱IATA)早在9年前就開始著手安全標(biāo)準(zhǔn)審查工作,現(xiàn)在已經(jīng)演變?yōu)橐粋€(gè)覆蓋范圍很大的安全檢查體系,凡是IATA的成員航空公司都要遵照執(zhí)行。今年年初,通過安全標(biāo)準(zhǔn)審查已經(jīng)是IATA成員的必備條件;有21家沒有通過安全標(biāo)準(zhǔn)審查的航空公司已被除名。
IATA表示,全球有330家航空公司已經(jīng)通過其安全標(biāo)準(zhǔn)審查。其中230家為IATA成員,另外 100家航空公司在即便還不是IATA成員的情況下也希望獲得認(rèn)證。美國和歐盟的監(jiān)管機(jī)構(gòu)均接受IOSA認(rèn)證,滿足通過代碼共享協(xié)議互相提供客源的航空公司必須就安全問題互相審查的要求。有少數(shù)幾個(gè)國家——包括埃及,要求任何飛往該國的航空公司均要通過IOSA認(rèn)證。旅客可以在www.iata.org/iosa找到相關(guān)名單。
本句是分別由and和but連接的三個(gè)簡單句。最后一句中buying tickets現(xiàn)在分詞作狀語表示時(shí)間,前面可以加when或while。
語法重點(diǎn):分詞短語作狀語
2. It's been a bad year for aviation fatalities, with more than 700 people killed in 16 crashes around the world so far in 2009.
本句是一個(gè)簡單句。其中 with more...in 2009是獨(dú)立主格結(jié)構(gòu),對主句進(jìn)行補(bǔ)充說明,結(jié)構(gòu)為 with+名詞+過去分詞+狀語。
語法重點(diǎn):獨(dú)立主格結(jié)構(gòu)
3. Though its focus started as an airline-by-airline evaluation, the EU has moved more toward building the blacklist on evaluations of entire countries-all airlines from 15 countries have a blanket ban行om the EU and are among the 233 cited.
本句是一個(gè)復(fù)合句。主句是the EU...are among the 233 cited,破折號后面的句子是對前面句子的補(bǔ)克說明,其中from 15 countries介詞短語作后置定語,修飾airlines。 cited過去分詞短語作后置定語,修飾233。Though引導(dǎo)讓步狀語從句。
語法重點(diǎn):介詞短語作定語,過去分詞作定語,讓步狀語從句
4. US and EU regulators accept IOSA certification to meet requirements that airlines funneling passengers to each other through code-sharing agreements audit each other for safety issues.
本句是一個(gè)復(fù)合句。主句是US and EU...meet requirements. that引導(dǎo)同位語從句,解釋說明requirements.其中funneling passengers...code-sharing agreement現(xiàn)在分詞短語作后置定語修飾airlines.
語法重點(diǎn):同位語從句,分詞短語作定語
1. European and US regulators evaluate aviation safety, and the airline industry itself has a world-wide safety-audit program, but it's difficult tor travelers to check airline safety when buying tickets.
本句是分別由and和but連接的三個(gè)簡單句。最后一句中buying tickets現(xiàn)在分詞作狀語表示時(shí)間,前面可以加when或while。
語法重點(diǎn):分詞短語作狀語
2. It's been a bad year for aviation fatalities, with more than 700 people killed in 16 crashes around the world so far in 2009.
本句是一個(gè)簡單句。其中 with more...in 2009是獨(dú)立主格結(jié)構(gòu),對主句進(jìn)行補(bǔ)充說明,結(jié)構(gòu)為 with+名詞+過去分詞+狀語。
語法重點(diǎn):獨(dú)立主格結(jié)構(gòu)
3. Though its focus started as an airline-by-airline evaluation, the EU has moved more toward building the blacklist on evaluations of entire countries-all airlines from 15 countries have a blanket ban行om the EU and are among the 233 cited.
本句是一個(gè)復(fù)合句。主句是the EU...are among the 233 cited,破折號后面的句子是對前面句子的補(bǔ)克說明,其中from 15 countries介詞短語作后置定語,修飾airlines。 cited過去分詞短語作后置定語,修飾233。Though引導(dǎo)讓步狀語從句。
語法重點(diǎn):介詞短語作定語,過去分詞作定語,讓步狀語從句
4. US and EU regulators accept IOSA certification to meet requirements that airlines funneling passengers to each other through code-sharing agreements audit each other for safety issues.
本句是一個(gè)復(fù)合句。主句是US and EU...meet requirements. that引導(dǎo)同位語從句,解釋說明requirements.其中funneling passengers...code-sharing agreement現(xiàn)在分詞短語作后置定語修飾airlines.
語法重點(diǎn):同位語從句,分詞短語作定語