完形填空练习.docx

2012年职称英语理工类B级完形填空提高练习（1）The Greatest Mystery of WhalesThe whale is a mammal - warm-blooded, air-breathing, giving birth to its young alive, sucking them-and, like all mammals, originated on land. There are many signs of this. _1_ front flippers, used for steering and stability, are traces of feet.Immense strength is built into the great body of the big whales, and in fact most of a whales body is one gigantic muscle. The blue whales pulling _2_ has been estimated at 400 horsepower. One specimen was reported to have _3_ a whaling vessel for seven hours at the _4_ of eight knots.An enraged whale will attack a ship. A famous _5_ of this was the fate of whaler Essex, which was sunk _6_ South America early in the last century. More recently, steel ships have had their plates buckled in the same way. Sperm whales were known to _7_ the old-time whaleboats in their jaws and crush them.The greatest mystery of whales is their diving ability. The sperm whale _8_ the bottom for his favourite food, the octopus. _9_ he is known to go as far down as 3,200 feet, where the pressure is 1,400 pounds, to the square inch. Doing _10_ he will remain submerged as long as one hour. Two feats are involved in this : storing up enough _11_(all whales are air-breathed) and withstanding the great change in pressure. Just _12_ he dose it scientists have not determined. It is believed that some of the oxygen is stored in a special system of blood vessels, rather than just held in the lungs. And _13_ that a special kind of oil in his head is some sort of compensating mechanism that automatically adjusts the internal pressure of his body. But _14_ you cant bring a live whale into the laboratory for study, no one _15_ just how these things work.EXERCISE:1. A)Their B)His C)Theirs D)Its2. A)strength B)width C)height D)length3. A)eaten B)crashed C)towed D)lifted4. A)distance B)rate C)voyage D)sail5. A)picture B)film C)example D)book6. A)off the coast of B)of the coast of C0away the coast of D)in the coast of7. A)hit B)seize C)damage D)overturn8. A)sink to B)rest on C)dive to D)hide on9. A)In that search B)Because of this C)In spite of that D)In support of this10. A)so B)such C)above D)the same11. A)air B)oxygen C)energy D)heat12. A)what B)where C)how D)when13. A)it is believed B)he believes C)we believe D)it believes14. A)because of B)due to C)since D)owing to15. A)communicates B)knows C)hears D)developsKEY:D A C B C A B C A A B C A C B2012年职称英语理工类B级完形填空提高练习(2)Federal Deposit Insurance CorporationBefore 1933, and particularly during the period 1929-33, bank failures were not uncommon. _1_ a bank overextended itself in creating credit or if several of its important loans could not be _2_, depositors in the bank would frequently become panicky and begin to make large withdrawals. _3_ the bank had only a small number of its deposits backed by currency, the band would soon be unable to meet withdrawals, and most depositors _4_ their money. Most frequently a bank merely needed time to improve its cash position by _5_ some of its loans and not making additional ones. In 1933, the number of bank failures _6_ a peak, forcing the federal government to intervene and _7_ the banks temporarily. To help restore the publics confidence _8_ banks and strengthen the banking community, Congress passed legislation setting up the Federal Deposit Insurance Corporation. _9_ corporation, an agency of the federal government, now insures over 90 percent of all mutual savings and commercial bank deposits for _10_ $100,000 per deposit. The FDIC has _11_ its insurance fund by charging member institutions one-twelfth of 1 percent of their total deposits.As a result of the protection provided by the FDIC and through other kinds of supervision, bank failures have been _12_ to a few isolated instances. When deposits are federally insured, people _13_ rush to withdraw their money if they _14_ the financial condition of their bank. The delay gives the banks the necessary time to adjust their cash credit balance, and this action helps to reduce the _15_ of bankruptcy. For an example of the value of the FDIC, note that the failure in 1974 of the huge Franklin National Bank did not touch off a panic, and that depositors lost no money as Franklin was taken over by another bank.EXERCISE:1. A) Although B) Even if C) If D) Because2. A) repaid B) deposited C) found D) saved3. A) Because B) Because of C) As a result D) considering4. A) lost B) had lost C) will lose D) would lose5. A) calling on B) calling for C) calling off D) calling in6. A) fell from B) reached C) climbed up D) arrived7. A) closed B) closing C) close D) has closed8. A) to B) in C) of D) into9. A) For the B) This C) As a D) A10. A) up to B) as much C) as many as D) equal11. A) built up B) build up C) been built D) build12. A) growing B) increased C) reduced D) disappeared13. A) no B) any more C) no longer D) not14. A) become concerned about B) become concerned withC) become concerned in D) concern15. A) likely B) possibility C) possibly D) opportunityKey: CAADD BCBBA ACCAB2012年职称英语理工类B级完形填空提高练习(3)BrokersBrokers neither physically handle products being distributed nor work on a continuing _1_ with their principals. _2_, a broker is an independent wholesaling middleman that brings buyers and sellers together and provides market information to either party. Most brokers work for sellers, _3_ a small percentage represent buyers.Brokers have no authority to set prices. They simply negotiate a sale and leave it up to the seller to accept or _4_ the buyers offer. They also furnish considerable market information _5_ prices, products, and general market conditions.Because of the limited services provided , brokers receive relatively small commissions-5 percent or less. _6_, brokers need to operate on a low -cost basis.Food brokers _7_ buyers and sellers of food and _8_ general-merchandise items to one another and bring them together to complete a sale. They are well _9_ about market conditions, terms of sale, sources of credit, price setting, potential _10_, and the art of negotiating. They do not actually provide credit but sometimes store and deliver goods. Brokers also do not _11_ goods and usually are not allowed to complete a transaction _12_formal approval. Like other brokers, food brokers generally represent the seller, who pays their commission.Food brokers, _13_manufactures agents, operate in specific geographic locations and work for a limited _14_ of food producers within these areas. Their sales force calls on chain-store buyers, store managers, and institutional purchasing agents. Brokers work _15_with advertising agencies. The average commission for food brokers is 5 per cent of sales.EXERCISE:1. A) basic B) basical C) basically D) basis2. A) Instead of B) Instead C) So D) Therefore3. A) for example B) as a result C) since D) although4. A) raise B) take C) reject D) lower5. A) regards B) in relation C) with regard D) regarding6. A) However B) Therefore C) For instance D) Because7. A) introduce B) to introduce C) take D) bring8. A) relating B) relate C) to relate to D) connected with9. A) informed of B) informing C) known D) informed10. A) sellers B) people C) buyers D) agents11. A) take title to B) take title of C) have title of D) give the title to12. A) with B) have C) in the possession of D) without13. A) alike B) like C) resemble D) look like14. A) number B) sum C) amount D) quantities15. A) close B) loose C) closely D)closerKey: DBDCD BABDC ADBAC2012年职称英语理工类B级完形填空提高练习(4)Singing Alarms Could Save the BlindIf you cannot see, you may not be able to find your way out of a burning building-and that could be fatal. A company in Leeds could change all that_1_ directional sound alarms capable of guiding you to the exit.Sound Alert, a company_2_ the University of Leeds, is installing the alarms in a residential home for_3_ people in Sommerset and a resource centre for the blind in Cumbria._4_produce a wide range of frequencies that enable the brain to determine the _5_ is coming from.Deborah Withington of Sound Alert says that the alarms use most of the frequencies that can be _6_ by humans. It is a burst of white noise_7_ people say sounds like static on the radio, he says. Its life-saving potential is greatShe conducted an experiment in which people were filmed by thermal-imaging cameras trying to find their way out of a large_8_ room. It_9_ them nearly our minutes to find the door_10_ a sound alarm, but only 15 seconds with one.Withington studies how the brain_11_ sounds at the university. She says that the _12_ of a wide band of frequencies can be pinpointed more easily than the source of a narrow band. Alarms_13_ on the same concept have already been installed on emergency vehicles.The alarms will also include rising or falling frequencies to indicate whether people should go up_14_ down stairs. They were_15_ with the aid of a large grant from British Nuclear Fuels.1. A) without B)with C)having D)selling2. A) run by B)changed by C) decorated by D)criticized by3. A) slow B)deaf C)blind D)lame4. A) Alarms B) Alarm C) The alarm D) The alarms5. A) noise B) sound C) music D) bell6. A) watched B) produced C) learnt D) heard7. A) where B) what C) that D) how8. A) smoked B) smoke-filled C) filled with smoke D) smoke-filling9. A) has taken B) takes C) took D) will take10. A) on B) near C) without D) from11. A) processes B) produces C) possesses D) proceeds12. A) feature B) quality C)diagram D) source13. A) basis on B) base on C) basing on D) based on14. A) or B) and C) but D) otherwise15. A) developed B) determined C) discovered D) deliveredkey: BACDB DCBCC ADDAA2012年职称英语理工类B级完形填空提高练习(5)Lets Have a Little Cooperation PleaseCia Andina do Triconos (CATSA), a Bolivian joint venture of the U.S. Dresser Industries and local investors, which and based its investment _(1)_ an allocation under the metalworking program, closed its doors after _(2)_ to penetrate the Andean market after more than two years in operation.The prospect of _(3)_ access to the Andean market, plus protection provided by a 55 percent ad valorem common outer tariff on bits sourced from outside the bloc, made the sales outlook seem _(4)_.However, CATSAs monopoly position in Ancom proved specious. _(5)_ the plant went on stream in 1974, the company was never able to export a single drill bit to the Andean market; and its local sales were _(6)_ a state-owned petroleum company. This market was clearly _(7)_, since the operation had been based on exporting the bulk of the plants 200-unit-per-month capacity to the Andean area.CATSA could not penetrate the Ancom market for several reasons:Although Ancom _(8)_ a 55-percent common outer tariff on third-country imports, some Ancom countries had previously _(9)_ LAFTA (Latin American Free Trade Association) tariff concessions, which take precedence over the Ancom tariffs.Ancom members simply did not _(10)_ the spirit of the metalworking agreement. After the installation of the CATSA facility, plants producing tricone bits _(11)_ in Peru and Venezuela. Under the metalworking program, participating _(12)_ were committed to prohibiting new foreign investment in allocations of other Ancom countries. But on the question of new investment by local industry, the obligation was only not to encourage it, with no requirement to prevent it. _(13)_ Venezuela, it has no com