全国职称英语考试通关必备利器理工类C级押题环球幺建华版牛津英语同义词字典版.doc

阅读理解：第十三篇Invisibility Ring　　Scientists can’t yet make an invisibility cloak1 like the one that Harry Potter2 uses.But，for the first time，they’ve constructed a simple cloaking device that makes itself and somethingplaced inside it invisible to microwaves.　　When a person “sees” an object，his or her eye senses many different waves of visiblelight as they bounce off the object.The eye and brain then work together to organize thesesensations and reconstruct the object’s original shape. So，to make an object invisible，scientists have to keep waves from bouncing off it.And they have to make sure the objectcasts no shadow.Otherwise，the absence of reflected light on one side would give the obiectaway.　　Invisibility isn’t possible yet with waves of light that the human eye can see.But it is nowpossible with microwaves.Like visible light，microwaves are a form of radiant energy.Theyare part of the electromagnetic spectrum，which also includes radio waves，infrared light，ultraviolet rays，X rays，and gamma rays.The wavelengths of microwaves are shorter thanthose of radio waves but longer than those of visible light.　　The scientists’ new “invisibility device” is the size of a drink coaster and shaped like aring.The ring is made of a special material with unusual ability.When microwaves strike thering，very few bounce off it.Instead，they pass through the ring，which bends the waves allthe way around until they reach the opposite side.The waves then return to their originalpaths.　　To a detector set up to receive microwaves on the other side of the ring，it looks as if thewaves never changed their paths as if there were no object in the way! So，the ring is effectively invisible.　　When the researchers put a small cdpper loop inside the ring，it，too，is nearly invisible. However，the cloaking device and anything inside it do cast a pale shadow.And the deviceworks only for microwaves，not for visible light or any kind of electromagnetic radiation.So，Harry Potter’s invisibility cloak doesn’t have any real competition yet.词汇：invisibility/invizE5biliti/n.看不见，无形 spectrum/5spektrEm/n.光谱cloak/klEuk/斗篷，披风 infrared/5infrE5red/adj.红外线的microwave/5maikrEuweiv/n.微波 ultraviolet ray 紫外线reconstruct/5ri:kEn5strQkt/v.重建 gamma ray 伽马射线radiant/5reidjEnt/adj.辐射的 wavelength/5weivleNW/n.波长electromagnetic/IlektrEJ5mA^nItIk/adj.电磁的coaster/5kEustE(r)/n.托盘，垫子练习：1.Harry Potter is mentioned in the passage，because scientistsA can now make an invisible cloak of the same kind as he uses.B try to make an invisible cloak of the same kind as he uses.C try to invent a device Similar in idea to the invisible cloak he uses.D know that it is possible to make an invisible cloak of the same kind.2.What is true of microwaves?A Their wavelengths are shorter than those of visible light.B Their wavelengths are longer than those of visible light.C They are different from visible light as they are a kind of radiant energy.D They are visible to the human eye.3.What is NOT true of the invisibility device?A It is made of a special material with unusual ability.B Microwaves bounce off it when they strike it.C Microwaves pass through it when they strike it.D It bends the microwaves all the way around until they reach the opposite side.4.What does the word “coaster” mean in the passage?A A disk or plate placed under a drinking glass to protect a table top.B A vessel engaged in coastal trade.C A roller coaster.D A resident of a coastal area.5.Harry Potter’s invisibility cloak doesn’t have any real competition yet，becauseA scientists have not found out how his cloak works.B the cloaking device is a total failure.C the cloaking device works only for microwaves.D the cloaking device works only for visible light.答案与题解：1.C文章的第一段告诉我们，科学家还没有发明哈里·波特使用的那种隐身衣，所以不能选 A;该段还告诉我们，科学家已制造了，一种装置，这种装置能使自身或置于其中的物体不被微波发现，所以C是正确选择，也就是说，科学家发明的隐形装置和哈里波特的隐身衣仅仅在概念上相同，这同时说明B和D是错误的选择。

2.B第三段最后一句中告诉我们，A是错误选择，B是正确选择该段第三句说，微波与可见光一样都是一种辐射能，所以C的说法是错误的，不能选择;根据该段第一句：with wavesof light that the human eye can see和第三句：Like visible light，可以得知D是错误的说法，也不能选择3.B第四段第三句说，当微波到达装置表面时，very few bounce offvery few是几乎没有的意思，所以选择B其他选择所述内容都可以很容易在该段中找到4.A第四段第一句告诉我们，科学家的这个隐形装置和一个杯垫差不多大小，所以A是正确选择coaster是一个多义词，其他几个选择是该词的其他意思，B：从事沿海贸易的船;C：过山车，摩天轮;D：海岸地区居民5.C A句在短文中没有提到;按文章的内容B不是正确的说法;文章最后一段说，And thedevice works only for microwaves，not forvisible light，所以C是正确选择译文：隐形环    到目前为止，科学家还不能造出哈利；波特使用过的隐身斗篷但是他们率先研制出了一种与其类似的装置，这种装置能使自身和置于其中的物体不受微波的探测。

    当一个人“看”某物体时，他的眼睛就会感知到从那个物体反射过来的光波眼睛和大脑一同工作，编辑这些光感并重建其原貌所以，如果要让一个物体隐形，科学家们就必须阻止光波反射并且他们得确保此物体没有阴影否则，反射光的缺失会使物体显现       鉴于人眼对光波的感知性，要想隐形某物体很难做到，但对微波就可以做到如同可见光，微波是一种辐射能他们是电磁波谱的一部分，其中也包括无线电波、红外线光、紫外线、x射线和伽马射线微波的波长比无线电波短，但比可见光长        科学家研制出的这种新型隐身装置和杯垫一般大小，形状像个环由于它是特殊材料制成，因此具有非同寻常的功能当微波射向它时，仅有极少的光会反射回去，这些光会从一端穿过这个环，并在此过程中沿着弯曲的路线前进，直到抵达另一端最后光波回到原来的路线    对于在环的另一端放置的探测器来说，光波看上去就像从来没有改变过路径一样，即好像没有遇到障碍物这样一来，这个环就如同没有存在过研究者又将一个铜线圈放进环里，依然得到同样的结果不过，这个环和里面的东西还是会留下一点影子环形隐身器只能作用于微波，而不能作用于可见光及电磁波因此，哈里。