| 四六级考试六级每日一练（2019/6/4） |
| 第1、2、3、4、5题：T[ornadoes,whirlwinds,and watersprouts are rotating funnel cloud air masses of small diameter.They are differentiated by the intensity of their rotation and by the surfaces that they traverse.Though tornadoes and whirlwinds both travel over land masses,whirlwinds are atmospheric systems smaller than tornadoes.Watersprouts are tornadoes that form or pass over a water surface.A tornado is a powerful vortex or “twister” whose rotational speeds are estimated to be near 300 miles per hour.The first visible indication of tornado development is usually a funnel cloud.As this funnel dips earthward,it becomes darker because of the debris that is forced into its intensifying vortex.Some tornadoes give no visible warning until their destruction strikes the unsuspecting victim.Tornadoes often occur in groups,and several twisters sometimes descend from the same cloud base.The forward speed of a tornado is normally 30 to 40 miles per hour.In the short time that it takes to pass,a tornado can cause fantastic destruction.There have been cases reported in which blades of straw were embeded in fence posts. 31. How are tornadoes distinguished from whirlwinds? A.Whirlwinds rotate in a different direction than tornadoes do. B.Tonadoes travel over land and whirlwinds over water. C.Tonadoes are larger than whirlwinds. D.Only tornadoes are funnelshaped. 32. Why do tornadoes appear to be dark? A.They occur only at night. B.They are funnel-shaped. C.They pick up debris from the ground. D.They are water-laden. 33. According to the passage,which of the following behaviors is frequently characteristic of funnel clouds? A.Descending from different cloud bases. B.Occurring in isolated areas. C.Lasting a long time. D.Occurring in groups. 34. According to the passage,some tornadoes take people unaware because they__. A.produce a sound similar to thunder. B.cannot be seen until it is too late. C.look so much like other clouds. D.carry so many large pieces of debris. 35. The author refers to straw embeded in fence posts in order to show __. A.where tornadoes occur. B.who makes reports about tornadoes. C.when tornadoes take form. D.how tornadoes affect physical objects. |
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| 第6题：By1990,productioninareaisexpectedtodouble（）of1980 A.that B.it C.one D.what |
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| 第7题：He was soaked to the skin,for there was no shelter（）the rain anywhere. A.under B.in C.off D.from |
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| 第8题：Whentwopeoplefeelthesamewayabouteachother,theirfeelingare（） A.liable B.visible C.typical D.mutual |
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| 第9题：Undergraduate students have no （）to the rare books in the school liberty. A. way B. entrance C. path D. access |
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| 第10题： Stunned by what had happened,the old man stood rooted ¬¬¬（）. A.on the spot B.to the spot C.on the ground D.to the ground |
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| 第11题：She may be （） experience, but she learns quickly. A. lacking B. lacking in C. in need for D. in lack of |
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| 第12、13、14、15、16题：By far the most common snake in Britain is the adder. In Scotland, in fact, there are no other snakes at all. The adder is also the only British snake with a poisonous bite. It can be found almost anywhere, but prefers sunny hillsides and rough open country, including high ground. In Ireland there are no snakes at all. Most people regard snake bites as a fatal misfortune, but not all bites are serious, and very few are fatal. Sometimes attempts at emergency treatment turn out to be more dangerous than the bite itself, with amateurs heroically, but mistakenly, trying do-it-yourself surgery and other unnecessary measures. All snakes have small teeth, so it follows that all snakes can bite, but only the bite of the adder presents any danger. British snakes are shy animals and are far more frightened of you than you could possibly be of them. The adder will attack only if it feels threatened, as can be happen if you take it by surprise and step on it accidentally or if you try to catch it or pick it up, which it dislikes intensely. If it hears you coming, it will normally get out of the way as quickly as it can, but adders cannot move very rapidly and may attack before moving if you are very close. The effect of a bite varies considerably. It depends upon several things, one of which is the body-weight of the person bitten. The bigger the person, the less harmful the bite is likely to be, which is why children suffer more seriously from snake bites than adults. A healthy person will also have better resistance against the poison. Very few people actually die from snake bites in Britain, and though these bites can make some people very ill, there are probably just as many cases of bites having little or no efforts, as there are of serious illness. 41. Adders are most likely to be found _______. A. in Scotland and nowhere else B. in wider parts of Britain C. in shady fields in England D. on uncultivated land throughout Britain 42. We are told that British snakes are ______. A. afraid of human beings B. poisonous including the adder c. dangerous except the adder D. friendly towards human beings 43. Which of the followings statements is Not true? A. The adder is the only poisonous snake in Britain. B. In Scotland there are no other snakes except the adder. C. Snake bites seem more dangerous than they actually are. D. People's attempts at emergency treatment are utterly unnecessary. 44. When will the adder not attack you? A. when you try to catch it B. when you are some distance away from it. C. when you happen to step on it. D. when you try to pick 45. If an adder hears you coming, it will usually _______. A. attack you immediately B. disappear very quickly C. want to frighten you D. move out of the way |
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| 第17题：Susanfoundthatherjobdidnotprovideherwithsufficient（）forherability. A.capability B.opening C.range D.scope |
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| 第18题：Manyatime（）themnottodoso. A.wehavewarned B.dowehavewarned C.havewewarned D.warnedwehave |
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