2015职称英语考试理工类A级完形填空

Highways in the United StatesThe United States is well-known for its network of major highways designed to help a driver get from one place to another in the shortest possible time.__1__these wide modern roads are generally__2__and well maintained,with few sharp curves and__3__straight sections,a direct route is not always the most__4__rge highways often pass__5__scenic areas and interesting small towns.Furthermore,these highways generally__6__large urban centers which means that they become crowded with__7__traffic during rush hours,__8__the "fast,direct"way becomes a very slow route.However,there is almost always another route to__9__if you are not in a hurry. Not for from the relatively new"superhighways",there are often older,__10__heavily traveled roads which go through the countryside.__11__are good lane roads;others are uneven roads curving__12__the country.These secondary routes may go up steep slopes,along hilly cliffs or down frightening hillsides to towns__13__in deep valleys.Though these are less __14__routes,longer and slower,they generally go to places __15__the air is clean and the scenery is beautiful,and the driver may have a chance to get a fresh,clean view of the world.1.A)AlthoughB)ButC)SinceD)Because 2.A)unevenB)bumpyC)roughD)smooth 3.A)littleB)muchC)manyD)few4.A)terribleB)horribleC)tolerableD)enjoyable 5.A)toB)intoC)atD)by6.A)mergeB)connectC)combineD)mix7.A)busyB)smallC)largeD)heavy 8.A)whenB)whereC)whichD)that 9.A)walkB)goC)takeD)fix10.A)moreB)lessC)veryD)extremely11.A)All of theseB)None of theseC)All roadsD)Some of these12.A)out ofB)outC)throughD)from13.A)lyingB)lieC)liesD)lay14.A)directB)indirectC)enjoyableD)beautiful15.A)theseB)whichC)thatD)where参考答案:ADCDD BDACB DCAADThe central problem of economics is to satisfy the people's and nation's wants.The problem we are faced with is that our resources,here identified as money,are__1__.The only way we can resolve our problem is to make choices.After looking at our resources,we must examine our list of__2__and identify the things we need immediately,those we can postpone,and__3__we cannot afford. As individuals,we face the central problem involved in economics-deciding just how to allocate our limited our limited resources to provide__4__with the greatest satisfaction of our wants.Nations face the same problem.As a country's population ___5__,the need for more goods and services growscorrespondingly.Resources necessary to production may increase,but there__6__are enough resources to satisfy the total desires of a nation.Whether the budget meeting is taking place in the family living room,in the conference room of the corporation__7__of directors,or in the chamber of the House of Representatives in Washington,the basic problem still exists.We need to find__8__of allocating limited resources in order to satisfy unlimited wants.A short time ago economists divided goods into two categories,free and economic.The former,like air and water, were in__9__abundance that economists had no concern for them. After all,economics is the__10__of scarcity and what to do about it.Today many of these"free goods"are__11__very expensive to use.Pollution has made clean air and water expensive for producers'extra costs,and__12__taxpayers who pay for the government's involvement in cleaning the environment.In the1990s,almost all goods are__13__.Only by effort and money__14__obtained in the form people wish.Meeting needs of people and the demands from resource available__15__the basic activity of production.In trying to meet unlimited wants from limited economic goods,productionleads to new problems in economics.EXERCISE:1.A)limited B)unlimited C)scarcity D)abundant2.A)want B)problem C)wants D)resources3.A)those B)some C)others D)many4.A)them B)themselves C)ourselves D)ours5.A)expand B)extends C)grows D)increase6.A)always B)sometimes C)often D)never7.A)management B)function C)board D)group8.A)people B)economists C)way D)methods9.A)so B)great C)such D)such an10.A)form B)study C)means D)source11.A)practically B)in practice C)in reality D) practicably12.A)the B)/C)for D)with13.A)plentiful B)scarce C)abundant D)in full supply14.A)they can be B)can they be C)they must be D)must they be15.A)are led to B)leads C)lead to D)leads to参考答案:A C A C C D C D CBC C B B DA Biological ClockUp until about100years ago,newspapers in the United States appealed only to the most serious readers.They used __1__illustrations and the articles were about politics or business.Two men changed that-Joseph Pulitzer__2__the New York World and William Randolph Hearst of the New York Journal. Pulitzer bought the New York World__3__1883.He changed it from a traditional newspaper into a very__4__one overnight. He added__5__illustrations and cartoons.And he told his reporters to write articles on__6__crime or scandal they could find.And they did.One of them even pretended she was crazy and then she__7__to a mental hospital.She then wrote a series of articles about the poor treatment of__8__in those hospitals.In1895,Hearst came to New York from__9__California.He wanted the Journal to be more sensational and more exciting __10__the world.He also wanted it to be__11__,so he reduced the price by a penny.Hearst attracted attention because his headlines were bigger than__12__.He often said,"Big print makes big news."Pulitzer and Hearst did anything they__13__to sell newspapers.For example,Hearst sent Frederic Remington,thefamous illustrator,__14__pictures of the Spanish-American War.When he got there,he told Hearst that no fighting was__15__.Hearst answered,"You furnish the pictures.I’ll furnish the war."EXERCISE:1.A)no B)many C)a lot D)little2.A)on B)for C)in D)of3.A)on B)in C)at D)about4.A)excite B)excitingly C)exciting D)excited5.A)a lot B)few C)a few D)lots of6.A)every B)all C)both D)many7.A)admitted B)was admitted C)could admit D)has admitted8.A)patients B)patience C)patient D)patiences9.A)an B)the C)a D)/10.A)than B)as C)in D)for11.A)cheap B)cheaper C)cheapest D)the cheapest12.A)anyone B)anyone’s C)anyone else D)anyone else’s13.A)may B)might C)can D)could14.A)draw B)drew C)to dray D)drawn15.A)going B)going out C)going on D)going off参考答案:ADBCDABADABDDCCEarth's Inner CoreScientists have long struggled to understand what lies at the planet's center.Direct observation of its center is impossible,so researchers must(1)to other evidence.In1889,a German scientist detected a severe earthquake in Japan.Geophysicists concluded that shock waves(2)jolts (晃动)from one side of Earth through the center to the other side.Then in1936,Danish geophysicist Inge Lehmann studied the waves'(3)to determine that within Earth's core of molten (熔化了的)iron lies a solid inner core-but(4)that core was made of eluded(难倒)her.Other geophysicists quickly determined that Lehmann's inner core was composed mostly(5) iron.Since then,Lehmann's discovery has(6)conventional Earth science.But now scientists are challenging traditional theory with new and radical(7).For example,Earth's center could actually contain an"inner core within the inner core,"claim Ishii and colleague Adam Dziewonski.Analyzing hundreds of thousands of earthquake wave(8), they maintain that the inner core has at its heart a tiny,even more solid sphere(球体).This sphere"may be the oldest fossil(9)from the formation of Earth,"says Dziewonski.Dziewonski and Ishii speculate that shortly(10)Earth formed around 4.8billion years ago,a giant asteroid(小行星)smashed into the young planet and nearly melted it.But Earth's center didn't quite melt;it(11)mass as the planet cooled.The core within a core may be the kernel(核心)that endured."Its presence could change our basic ideas about the (12)of the planet,"Dziewonski says.Dziewonski's idea is tame(温和的)compared to the(13) theories of independent geophysicist J.Marvin Herndon. Earth's inner core is made not of iron,he claims,but a(14) of nickel and silicon.Herndon has a truly revolutionary notion: Within the nickel silicide(硅化物)inner core is also an "inner"inner core-an8km-wide ball of the element uranium. Uranium is radioactive.Herndon thinks the uranium releases heat energy as its atoms(15)fission-split and crash into one another in a chain reaction.In other words,we may live on top of a gigantic,"natural"nuclear power plant.1A try B leave C turn D point2A create B receive C feel D overcome3A work B solution C job D patterns4A whether B what C why D how5A from B within C of D to6A followed B dominated C restored D opposed7A ideas B demands C phenomena D movements8A things B acts C methods D records9A taken B benefited C left D kept10A after B before C since D when11A expanded B modified C gained D melted12A size B origin C structure D shape13A radical B traditional C classical D conventional14A system B copy C model D compound15A charge B last C experience D show参考答案:1.C2.A3.D4.B5.C6.B7.A8.D9.C10.A11.C12.B13.A14.D15.CIn a purely competitive market,the supplier of goods and services has no control over the market price,because he produces too little to influence market conditions.With no difference between his products and the products__1__his competitors,he will sell nothing if he charges above the market price and he will sell all if he charges at or__2__the market price.However,in considering the price,he must take cost ofproduction__3__.There are times when he may be willing to sell below his cost.This might happen when prices tumble for__4__ a short time.However,no business person can__5__lose money for a prolonged period.He must__6__of his costs in relation to the market price if he is to compete successfully and earn a profit.Many people have the impression that as production increases,costs per unit decrease.__7__mass production has made this true in certain industries and at certain levels of production,__8__logic and practical experience have shown that costs per unit begin to rise beyond a certain level of production.Some economists__9__this principle as the law of increasing costs.The reason__10__rise as production goes up is complex. However,it is easy to recognize that as production goes up, the need for additional factors of production will also grow, resulting__11__competitive bidding in the marketplace for the factors of production.If a producer needs__12__skilled labor to produce more,and none of this labor is unemployed,the producer will have to get__13__from other sources.This can be done by__14__higher wages.Higher bidding would also apply to the other factors of production.We must also recognize thatnot all labor is equally productive,__15__not all land is equally fertile and not all ore is equally rich in the mineral wanted.1.A)to B)at C)of D)on2.A)below B)beneath C)over D)above3.A)to consider B)into consideration C)to considerationD)in consideration4.A)he believes will be B)what he believes be C)what he believes will be D)he believes to be5.A)afford to B)be affordable C)be afforded to D)have afforded6.A)constantly aware B)constantly knowledgeable of C) be constantly aware of D)constantly aware of7.A)Because B)Since C)When D)While8.A)both B)as well as C)also D)but9.A)refer B)refer to C)call D)are referred to10.A)cost B)the cost C)the costs D)costs11.A)from B)in C)\D)for12.A)less B)numerous C)more D)many13.A)them B)these C)it D)those14.A)offering B)cutting C)reducing D)having15.A)as just B)just as C)because D)while参考答案:CABCA CDABD BCCAB。