大专预官英文考试试题

大专预官英文考试试题 83~88年 83年英文題目 :B:1.Please remember________ your hand during the test if you have any question. A raising B to raise C having raised D to have raised :A:2.You should have asked for help instead ________to do it yourself. A of trying B to try C try D from trying :B:3.Do you have any excuse ________late to class yesterday, A for to be B for being C to be D being :D:4.when ________a dictionary ,you need to know the symbols it contains. A used B use C to use D using :D:5.While ________to help Eliza, I got impatient because she wouldn't pay attention to what I was saying. A I am trying B tried C I try D trying :A:6.I was very upset by ________me the truth. A his not having told B him not tell C he didn't tell D not to tell :D:7.I think I hear someone ________the back door. Do you hear it ,too, A trying open B to try opening C to try to open D trying to open 1 :C:8.A fire must have a supply of oxygen.________, it will stop burning. A Consequently B Furthermore C Otherwise D However :A:9.We ________the game if we'd had a few more minutes. A might have won B won C had won D will win :D:10.I want to visit Rome,________ of Italy. A is the capital B it is capital C which the capital is D the capital :B:11.People who exercise frequently have greater physical endurance than those________. A who doesn't B who don't C that doesn't D which don't :B:12.Knowing several ________helpful if you work for an international company. A languages are B languages is C language is D language are :C:13.No one has better qualifications. You are certain ________for the position. A to choose B having chosen C to be chosen D choose :D:14.Yesterday's party was okay ,but I'd rather ________to a movie. A go B went C be going D have gone :B:15.The little boy started to cry. He ________his bicycle, and no one was able to find it for him A has lost B had lost C was lost D was losing :A:16.Next Monday when there ________a full moon ,the ocean tides will be 2 higher. A is B is being C will be D will have been :A:17.A fortune-teller predicted ________get married before the end of this year. A that I would B when I C what I will D what I :D:18.The plane's departure was delayed because of mechanical problems. When the passengers finally boarded the aircraft,many were annoyed Because they ________in the airport for three hours. A are waiting B were waiting C have been waited D had been waiting :A:19.Excuse me ,________speaking a little more slowly ,I didn't catch what you said. A would you mind B can you C why don't you D could you please :C:20.There's too much noise in this room. I can't understand what ________. A is the professor saying B that the professor is saying C the professor is saying D is saying the professor :C:21.Somebody forgot this umbrella. I wonder ________. A whose is this umbrella B whose umbrella is C whose umbrella this is D is this whose umbrella 3 :B:22.I'm sorry. I didn't know you were asleep. Otherwise, I ________so much noise when I came in. A didn't make B wouldn't have made C won't make D don't make :C:23.Our government has already imposed pollution controls on automobiles. Both domestic and imported cars must ______anti-pollution devices. A equip B equip by C be equipped with D be equipped by :C:24.Be sure to wash your vegetables thoroughly. A lot of pesticide residue ________on local produce. A can find B can found C can be found D can be finding :B:25.As the fairy tale goes, the prince ________into a frog by an evil witch,and only a kiss from a beautiful princess could restore him to his original state. A turned B was turned C was turning D had been turning 回英文試題首頁 84年英文題目 For questions 1-9,choose the answer that would best keep the meaning of the underlined word or phrase. 4 :A:1.Researchers have discovered that dolphins are able to mimic human speech. A.imitate B.deliver C.hear D.understand :C:2.Astronomers use telescopes to study the asteroids between Mars and Jupiter. A.satellites B.space ships C.small planets that look like stars D.unidentified flying objects :D:3.In mountainous regions, much of the snow that falls is compacted into ice. A.broken down B.embedded C.compiled D.compressed :B:4.In snowing days, people often sprinkle salt on roads to prevent them from being frozen. A.split B.scatter C.swab D.splinter :C:5.For three thousand years, poets have been enchanted and moved and perplexed by the power of their own imagination. A.fascinated B.astonished C.bewildered D.grasped :B:6.The devastating earthquake,with a preliminary magnitude of 7.2 on the Richter scale,jolted Japan last month. A.terrible B.completely destructive C.sudden D.collapsed :A:7.Customer:Could I have some coffee? 5 Witress:Sorry,we're all out. A.we have no more coffee now B.we're going out now C.we just closed the shop D.please drink outside in the yard :C:8.Sally:I want to buy those emerald green curtains. John:Be reasonable.dear.you haven't really got enough money. A.sensational B.sensitive C.sensible D.patient :D:9.By the time the train has pulled into Montreal,the detective will have figured out the mystery and caught the criminal. A.expected B.calculated C.believed D.unraveled For questions 10-21,choose the best word or phrase for the blank. :C:10.Unlike most European students in our dormitory ,many American students ____ bacon and eggs for breakfast every day. A.used to eating B.are used to eat C.are used to eating D.are using to eat :D:11.The density of copper is 8.92 grams per cubic centimeter,just about half ____. A.of gold B.is gold C.of the gold D.that of gold :C:12.People who live far away from their families often find it difficult to ____ with their situation.They can hardly deal with the loneliness they feel. A.coupe B.cop out C.cope D.couple 6 :D:13.Schubert was one of the greatest composers ____ ever lived in the world. A.who B.which C.who has D.that :A:14.If the illness had been diagnosed a day earlier it ____ all the difference. A.might have made B.would have been made C.may make D.would be made :A:15.Tony:Hello.Is Rob there? Sue:No,he's not here right now.Can I ____ a message? A.take B.bring C.leave D.make :D:16.According to the law of inertia,a body once in motion will never stop till a force compels it ,nor will a body at rest start to move ____. A.with its accord B.in an accordance C.unwilling D.of its own accord :A:17.The Reykjanes Ridge forms a northern portion of the Mid-Atlantic Ridge where two enormous segments of the earth's crust ____ about half an inch a year. A.are being wrenched apart B.have to be wrested C.wrinkle D.are wreaking :D:18.Barely ____ the exam when the professor collected the papers. 7 A.he had finished B.was he finishing C.he had been finishing D.had he finished :A:19.In the ear,just above the cochlea, there are three small semi-circular canals ____ as an organ of balance. A.that function together B.they function as well C.having been functioned together D.they function together :D:20.conifers are important to man ____ they supply much of the lumber and most of the wood pulp for paper. A.that B.though C.whatever D.because :C:21.This report would be ____ only to an expert in computing. A.intelligent B.intellectual C.intelligible D.diligent For questions 22-25,read the following passage and choose the best answer to each question. Northrop Grumman is modifying the cockpit of a U.S.Navy F-5E on loan as part of a cooperative effort with the U.S.Air Force and Navy to determine whether modern digital avionics can extend the life of F-5s in service worldwide. The U.S.government is interested in seeing if F-5s flown by many of its allies can be upgr aded.Once the F-5E is outfitted with modern digital avionics,it will fly in demonstrations in the U.S.and perhaps abroad.The aircraft is from the Navy aggressor squadron at the Top Gun school at NAS Fallon,where it was being used to simulate MIG aircraft in air-to-air combat maneuvering. The F-5E arrived at Northrop Grumman's E1 Segundo,Calif.,facility in June 1994 and is expected to make its first flight with the midified cockpit by next spring. 8 Northrop Grumman is performing the installation of a digital avionics suite as well as foight testing and evaluation at no cost to the government.Tht effort will cost about $12 million over three years. :C:22.What is the main topic of the passage? A.F-5E is a very old plane. B.It costs a lot to modify the cockpit of an F-5E. C.The U.S.government is trying to equip F-5s with modern digital avionics. D.F-5s are superior to MIGs. :B:23.What does the world 'extend' in the first paragraph refer to? A.stress B.prolong C.reach D.stick out for :B:24.What is the F-5E used as at the Top Gun school? A.a cargo plane B.a MIG C.a bomber D.an aggressor squadron :B:25.Which of the following statements is NOT true? A.F-5s are still in service. B.The flight testing is performed at the Top Gun school. C.The U.S.Air Force and Navy have joined the modification project. D.The first flight of the modified F-5E is planned to be made by the 9 spring of 1995. 回英文試題首頁 85年英文題目 For questions 1~10, choose the one word or phrase that best keeps the meaning of the underlined word or phrase. (A)1.Nostalgia is a recurrent theme in Chinese poetry. A subject B purpose C title D method (C)2.I recall with anguish a lecture I heard in Taipei three years ago. A joy B fun C pain D pleasure (D)3.Despite the advances in technological knowledge, mankind sickens and idies. A advantages B inventions C discoveries D development (A)4.Law gave birth toi the concept of freedom. A brought about B got rid of C took care of D made up of (A)5.It was a terrible blow for us to discover that we had brought a retarded child into this world. 10 A a damagins effect B a strong wind C a surprise D an incredible shock (A)6.Violence as a way of achieving racial justice is both impractical and immoral. A unrealistic B impatient C irresistible D irresponsible (C)7.There is no denying that boys think differently from girls. A It is possible to deny B Everyone believes C It is impossible to deny D All people doubt (B)8.In fact, the scientific breakthrough has been initiated by those who were formally educated. A outcome B achievement C result D finding (A)9.Politicians frequently use hand movements to hold attention of an audience. A attract B watch C attend D command (C)10.A dream is an involuntary and spontaneous psychic product, a voice of nature. A obvious B continuous C unplanned D designed For questions 11~25, choose the one word or phrase that best completes the 11 sentence. (A)11.Science has been morals. A accused of undermining B accused to undermine C accused undermining D accusing to undermine (B)12. of the twentieth century, James Joyce is known for his complex prose and characterizations. A The most studying novelist B The most studied novelist C Most of the study D Study most (D)13.After his education at Eton in England, George Orwell as a member of the British Imperial Police in Burma. A since five years served B serving five years C serving for five years D served for five years (D)14.One of the characteristics of peasant art . A are their conservatism B are conservative C is their conservatism D is its conservatism (B)15.A leader of the civil rights movement in the United Sates, Martin Luther King Jr. advocated a policy of non-violent . A resisting unjust author B resistance to unjust authority 12 C resistant to unjust authorization D resist unjust authority (D)16.The new law enbables a man the government if he has no work. A claiming money from B claim money for C claimed money by D to claim money from (C)17.People of different cultures , its qualities, and its uses. A has different views of time B views time differently C have different views of time D having differing views of time (A)18.Unlike buying it, is a complex acivity, and it affects deeply the shape and value of our lives. A growing our own food B grow food of our own C the frow for our own food D our own food grow (A)19. Rober Frost, , was awarded the Pulitzer Prize four times. A a major American poet B a major American poem C is a major American D major American poetry (A)20.As an editor , a newswriter, ,and an author of novels, Van Doren is known for her personal style and insightful skepticism. A an essay B writes essays C an essayist D she is an essayist (A)21.In 1852, an English chemist had noticed that the atoms of a particular element tended a fixed number of other atoms. A combine B to combine C be a combination D to combine with (B)22.Since the end of World War II, the United States has been market in the world. 13 A largest and openest B the largest and most open C the most largest and open D the larger and opener (D)23.A good laboratory, like a good bank or a corporation or government, has to . A ran a computer B be a computer C runs as a computer D run like a computer (B)24.The history of life on earth has been a history of interaction and their surroundings. A among alike things B between living things C both alive things D either lively things. (C)25.Everything or think concerns the satisfaction of the needs they feel or the escape from pain. A which men does B men does C that men do D what men do 回英文試題首頁 86年英文題目 For questions 1~7, choose the one word or phrase that best keeps the meaning of the underlined word or phrase. (A)1.In essence, the classrooms in most of our nation's primary grades are geared to skills that come naturally to girls but develop very slowly in boys. A are orientated B are taught C are misled D are compromised 14 (C)2.The dream life, though queer and bewildering and unsatisfactory in many respects, has its own advantages. A fantastic B interesting C baffling D weird (C)3.The people who are prone to fall on their knees to do us honor when succes is with us may be the first to throw the stone of malice when failure settles its cloud upon our heads. A laugh B justice C malevolence D fate (A)4.Experts predict that by the year 2000 many people will be working at home with computers that are connected to their offices. A foresee B guess C assure D estimate (B)5. A riot broke out at a detention center for juvenile convicts in November, 1996 A drug addicts B young criminals C heinous villains D misbehaved inmates. (D)6.Despite the feeble demand that led to a slump for global semiconductor makers, Taiwan's IC companies generally fared better than their counterparts in other countries. A rise B swing C raise D decline (C)7.English is not only noted for its high degree of uniformity; it is also noted for the remarkable increase in the number of users of the language. A adaptability B diversity C sameness D popularity For questions 8~20, choose the one word or phrase that best completes the sentence. (B)8.Many banks have automatic teller machines outside the bank customers can get their money any time they want it, day or night. A therefore B so that C so as D whose (C)9. It is said that mathematics is the base of all other sciences, and that arithmetic, , is the base of mathematics. A is science of numbers B it's a science of numbers C the science of numbers D a science of numbers (B)10.The force of attraction between the positive protons in the nucleus and the negative electrons keeps the electrons 15 in their paths. A is whirling around B whirling around C is whirled around D whirls around (B)11.Aspirin is used a constriction of the blood vessels. A counteract B to counteract C counteracting D the counteraction (C)12. stone tools and animal remains found with the human fossils, anthropologists have determined that Neanderthal Man was a successful hunger. A The B Both the C From the D When the (A)13.only after the universities send you the application, for the admission A can you apply B you can apply C you apply them D you can be applied (D)14.Even western physicians agree that patients with deep faith will regain their health patients with little hope. A most fastly B more fastly than C more fast than D faster than (C)15.Some people refrain their gratitude because they feel it will not be welcome. A to express B expressing C from expressing D express (B)16. According to Bernoulli's Principle, the higher the speed of a fluid, the pressure. A the lower it is B the lower C lower than D it will be lower than (C)17.So far all attempts to relate the bird's navigational ability to electric forces and magnetic activity . A is failed B fails C have failed D had failed (C)18.Scientists say that is happening to the Earth. A something very seriously B something very much seriously C something very serious D very serious something (D)19.When the girl came back from Australia, she wanted to tell everybody about the lovely raccoons she had seen. A who B where C what D that (C)20. thousands of snow-seeking tourists, scattered flakes were seen in hohuanshan this morning as the cold air mass loomed over the island. A To attract B Attracted C Attracting D For attracting 16 For questions 21~25, identify the one underlined word or phrase that is incorrect. (C)21. The wings of one species of butterfly were discovered to contain A B a rare chemical which appears to be effective as an anti-tumor agency in experiments on laboratory rats. C D (B)22.Despite the advances in techonological knowledge and the millions A spending on medical research programs, mankind sickens and dies; B C hospital and mental institutions are filled to overflowing with D the diseased and the hopeless. (A)23.A storm in 1989 fell hundreds of trees, damaging the bayon, a A B sandstone temple famous for its eerily smiling stone faces. C D (D)24.When an oyster fails to get rid of a liability like a grain of sand, A B C it clams down, closes up and converting that liability into D a precious pearl. (B)25.If I were an employer, I would rather employed graduates who have A B wide range and curiousty than those who narrowly pursued safe C D subjects and high grades. 回英文試題首頁 87年英文題目 17 For questions 1~10, choose the one word or phrase that best keeps the meaning of the underlined word of phrase. (B) 1.We are always on the move, and we don't have much patience with slow systems of transportation. A taking a train B going somewhere C changing from one house to another D making decisions (A) 2.He was a great friend of mine and saw me through all the hard times. A supported me B saw me off C saw me about D spared me (B) 3.During the mid-1960s the world became awash with dollars. A award B flooded C aware D away (D) 4.It's not your physical condition that counts; it's the condition of your brain. A numerates B adds C estimates D matters (A) 5.Brody was ready for a fight, but he backed off. A withdrew B reconsidered C bailed out D was baffled (B) 6.There is at least one bar where you can be sure of high-level conversation. A barrier B cocktail lounge C court D telephone (A) 7.Pakistan's president dismisses a prime minister mired in family troubles and corruption charges. A bogged down B mixed C mined D jailed (C) 8.At the conclusion of the opening session, cheers were raised for Queen Victoria. A deduction B opinion C end D encouragement (B) 9.British artist Brian Clarke's architectural stained glass brightens the world. A dark glass B colored glass C sunglass D broken glass (A) 10.Nowhere is the discussion of emotional intelligence more pressing than in American schools, where both the stakes and opportunities seem greatest. A urgen B precious C meaningful D heavy For questions 11~20, identify the one underlined word or phrase that is incorrect. 18 (A)11.The use of computer, already very important today, will continue to create enormous changes for white-collar workers. (C)12.The main stadium in central Atlanta is still abuilding, but venues for 14 of the sports on the 1996 Games are more or less complete. (A)13.During this wild pinball games in frenetic cyberspace, volcanic explosions and mysterious comets stymie your progress. (D)14.Exploring a vast, labyrinthine museum like the Louvre can do wonders for your cultural education, but try telling that to your feet--- even the gift shop seemed to go on forever. (C)15.The fires of World War II forged many great leaders and inspiring orators, none great than Winston Churchill, Britain's indomitable Prime Minister. (B)16.Our stolen Future says a wide range of reproduction-related ills maybe caused by chemical pollutants in the environment, including DDT, some forms of dioxins and PCB, and a number of other synthetic substances. (B)17.I'd heard about "spam"--- Internet jargon for machine-generated junk mail-and over the year I'd received my share of E-mail chain letters, get-rich-quick pitches and cheesy magazine advertisements. (A)18.Among two dozen major countries, US ranks third from last in individual willingness to save, putting aside a bare 4% of disposable income. (C)19.With three months to go until the Russian presidential vote, Boris Yeltsin is in fully campaign mode and is harping on the central issue of the election: the future of economic reform. (C)20.Paris' venerable Olympia concert hall has never seen anything quite likes the stir created by Woody Allen and his New Orleans Jazz Band. For question 21~25, choose the one word or phrase that best completes the sentence. (A)21.Everyone has to persevere and to innumerable setbacks. A face up B put down C defect D get over (C)22.Users of English today are quite open and straightforward in their language, and will use words which shocked people only a few years ago. A will B would C would have D will have 19 (D)23.She complimented her opponents the intelligence of their remarks. A in B of C by D on (B)24.These birds have a highly accurate instinct that leads them to sea cliffs. A home B homing C homely D homesick (B)24.ContemporaryCompositions are breaking down the established divisions between popular and so-called serious music. A classicist B classical C classified D class 回英文試題首頁 88年英文題目 Directions: Choose the most appropriate answer to each question according to the passage given. For questions 1~5 Animals are not the only carnivorous organisms in the world. Certain plants- usually those in nitrate-poor soils-- occasionally consume meat to stay alive. One of the best-known is the venus-flytrap, found in the bogs of North Carol rent is generated, which causes a change in motor cell water retention. The motor cells, located at the middle of the two lobes, go limp; the plant closes trapping the creature-all within about two-fifths of a second. Digestive juices in the plant then take over, absorbing the nitrogen and other nutrients from the creature. After the soft parts are digested, the plant opens and drops the skeleton to the ground. (B)1. the word " carnivorous" is used to describe animals that eat _________. A grass B meat C plants D soil (D)2. The word "kidney-shaped" is to describe something that is in the shape of a(an)_________, A octagon B square C triangle D irregular oval (C)3. The word " alight" means________. A to burn B to adjust C to land D to make 20 less heavy (B)4. When something goes " limp" it becomes ___________. A stronger B weaker C denser D thicker (A)5. "nutrients" are ________. A substances B gases C insects D plants For questions 6~10 The procedure of donating blood has been in use since World War I. Blood is needed for transfusion, mainly for surgical procedures and for accident victims. Donors usually give a pint of whole blood, which is then divided into platelets, white blood cells, and red blood emotherapy. A pint of blood is collected, the platelets are removed, and then the processed blood is transfused back to the donor. This process takes place eight times to get the amount of platelets needed. Pheresis donors can give platelets every two weeks, because the body replaces the platelets more quickly than it replaced red blood cells. In addition, this method yields as many platelets as ten normal whole blood donations. Donated blood is routinely tested for a multitude of foreign bodies, such as HIV (which causes AIDS), hepatitis B, and syphilis. In addition, blood that will be used by newborns and infants is usually irradiated to eliminate harmful elements in the blood. (C)6. " chemotherapy" is a treatment which may need a large supply of _______. A white blood cells B red blood cells C platelets D whole blood (B)7. The purpose of " pheresis" is to collect ________only. A whole blood B platelets C red blood cells D white blood cells (A)8. which of the following titles is the best for this passage? A Donating Blood B Donated Blood C Donors D Platelets (B)9. One can donate platelets as often as ________. A once every two months B once every two weeks C eight times a year D ten times a month 21 (D)10. Which of the following ideas is "NOT" found in the passage? A Donated blood may contain harmful elements. B blood may be needed for surgical procedures. C blood donors usually give a pint of whole blood at a time. D A white blood cell is larger than a red blood cell in size. For questions 11~15 New developments in food preservation technology include irradiating some foods with gamma radiation to keep them fresh. The procedure is relatively simple: Food travels by conveyer belt through and irradiation chamber containing pellets of gamma-emitting radioisotopes (usually cobalt-60). As the food passes, the gamma radiation destroys bacteria, molds, and yeasts that cause spoilage. The radiation is also used to sterilize vacuum-packed meat, which then can be stored for years use spoilage C to put something into a bag D to heat something until it is eatable (D)12.A "radioisotope" is ___________- A a method B an instrument C a machine D a substance (B)13. Which of the following foods is "NOT" mentioned in he passage? 22 A bacon B banana C meat D strawberries (C)14. According to the passage, which of the following statements is "NOT" true? A Food irradiation has been approved by a number of nations for various foods. B food irradiation is not widely accepted by Americans. C the procedure of irradiating foods is very complicated. D some people are worried about the safety of irradiated foods (D)14.Which of the following ideas is "NOT" mentioned in the passage? A irradiation is one of the new developments in food preservation technology. B prolonging foods' shelf life can increase world food supplies. C radiation might create harmful materials in foods. D food value is usually measured in vitamins, minerals, or calories. For questions 16~20 when certain metals such as lead or mercury are cooled to temperatures 23 very near absolute zero, they exhibit a phenomenon known as superconductivity, where they lose almost all resistance to the flow of electric current. If a current is set moving in a close loop of super conducting wire, the current will continue to flow indefinitely. Superconductors are used to make very powerful electromagnets for particle accelerators. Someday, they may be used to build trains that float above their tracks on magnetic fields, allowing them to travel at a very high speed because of the reduced friction. Superconductors also may be used to build super fast computers. Until recently, the highest temperature at which any known superconductor would operate was around 22K, or 22 degrees above absolute zero. Such superconductors must be cooled by immersing 24 them in liquid helium, which boils at about 4 K. Unfortunately, liquid helium is expensive and in fairly short supply. Recently, new ceramic materials have been found that become super conducting at temperature up to around 70 K. These can be cooled with liquid nitrogen, which is much cheaper and more abundant. So far these new materials have not been able to carry as much current as metal superconductors, and because they are ceramics, they have been difficult to form into wires. Eventually, superconductors may be cooled with conventionally refrigeration equipment. But the real dream is to find superconductors that function at room temperature. (C)16. Ceramic superconductors are better than metal ones because they _____ A can be formed into wires easily 25 B can carry much more electric current C become supercnoducting at a higher temperature D can function at room temperature (A)17.The "superconductivity" of certain materials is caused by ______ A a very low temperature B a very high moving speed C a very high magnetic force D a very low air pressure (D)18. The capital letter "K" in this passage ( as in "22K") is used as the symbol for ______ A the boiling point of water B the number of a thousand C electrical resistance D absolute temperature (A)19. Which of the following ideas is "NOT" found in the passage? A absolute zero is the theoretical temperature where a molecular motion stops. B liquid helium boils at about 4K. C liquid nitrogen is more abundant than liquid helium. D Mercury can become superconductive. (C)20. Which of the following statements is "NOT" true according to 26 the passage? A lead can lose almost all resistance to the flow of electric current because of low temperature B superconductors may be used to build trains that float above their tracks. C ceramic superconductors can carry as much current as metal ones do. D liquid nitrogen is much cheaper than liquid helium. For questions 21~25 Radar has been used since World War II to locate and track storms all over the world. Radar antennas send out radian wave pulses toward the clouds. All types of precipitation and even boundaries created by air temperature differences reflect some of the waves back to the antennas. The received radio wave data are plotted on maps, which are used to create many of the weather maps we see on television and in newspapers. The latest weather radar techniques use the Doppler effect- a phenomenon discovered by Austrian scientist Christian Doppler in 1842., who noted that the frequency of sound waves from an approaching source is shifted to a higher frequency and that those from a receding source is shifted to a lower frequency. The same principle is applied to Doppler radar-radar that gathers radio wave frequency to "read" weather events. Doppler radar can determine precipitation moving toward a weather station, from the increase in the radio wave frequency reflected from the clouds. The radar detects any frequency change in the speed of the clouds and uses the data to show wind patterns. For example, if the precipitation is being blown away from the antenna, the frequency of 27 the radio waves decrease. Doppler radar is also used to predict tornadoes; The changeable winds around a storm could indicated the internal circulation in a storm that could lead to a twister. (C)21. The word "receding" means _________ A going down B going up C moving away D coming out (C)22. Radar is introduced in this passage mainly as a device to detect __________- A aircraft B ships C storms D missiles (C)23. In this passage, which of the following is mentioned as a type of " precipitation"? A snow B hail C cloud D rain (D)24. The word "pulse" in this passage refers to _______A heartbeat 28