首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
A、You hear the gun before you see the smoke. B、You see the smoke before you hear the gun. C、The sound of the gun will reach you
A、You hear the gun before you see the smoke. B、You see the smoke before you hear the gun. C、The sound of the gun will reach you
admin
2010-05-09
46
问题
Light travels at a speed that is about a million times faster than the speed of sound. In one second, light travels about 300, 000 km, but sound travels only about 334 meters. You can get some idea of this difference by watching the start of a race. If you stand some distance away from the starter, you can see smoke come from his gun before the sound reaches your ears.
This great speed of light produces some strange facts. Sunlight takes about 8 minutes to reach us. If you look at the light of the moon tonight, remember that the light rays left the moon 1.3 seconds before they reached you. The nearest star is so far away that the light that you can see from it tonight started to travel towards you about four years ago at a speed of nearly 20 million km per minute. In some cases, the light from one of tonight’s stars started on its journey to you before you were born. Thus, if we want to be honest, we cannot say, "the stars are shining tonight.” We have to say, "the tars look pretty. They were shining four years ago, but their light has only just reached the earth."
选项
A、You hear the gun before you see the smoke.
B、You see the smoke before you hear the gun.
C、The sound of the gun will reach you before the race starts.
D、Racers start to run before you see the smoke.
答案
B
解析
事实细节题 根据原文的举例可以得知会先看到枪管的烟,然后听到枪声。
转载请注明原文地址:https://kaotiyun.com/show/I9KK777K
0
大学英语六级
相关试题推荐
A、Buildingrelationshipwithouterspace.B、Makingprofits.C、Creatingastepping-stonetoscientificresearch.D、Fosteringinte
GriffithworkedforafirmthatspecializedineconomicdevelopmentinWashingtonD.C.becausesheneededmoneytopayforherd
A、Itstrees.B、Itsstonewalls.C、Itsrockgarden.D、Itspronunciation.CWhatisRyoanjiTemplefamousfor?信息明示题。文章第四段最后提到,This
A、SoccerisnotpopularinItaly.B、MostCanadianshatehockey.C、MostAmericanslikebaseball.D、Thosewhodon’tlikebaseball
Thetraditionalbeliefthatawoman’splaceisinthehomeandthatawomanoughtnottogoouttoworkcanhardlybereasonably
ManyAsiantouristsdarenotgotoThailandsincethetsunamiin2004becauseoftheir______.Privatecompanieshavebeengran
Popularideologicalassumptionsaboutsocietychangewiththedecades,aswellaswiththeenlargementofknowledge.Theanalysi
A、Hesaiditwastrue.B、Hesaiditwasanaccusationagainsthim.C、Hesaiditwashardtobelieve.D、Hesaiditwasimpossible
InanefforttomakeupforsomeoftheglaringlimitationsofIQtests,researchershavebeguntodevelopnewwaystomeasuret
A、Hecan’tfindhisnewbuilding.B、He’snotsatisfiedwiththebigapartment.C、He’snotaccustomedtothelargebuilding.D、He
随机试题
要改变窗体上文本框控件的数据源,应设置的属性是()。
恶心呕吐、呃逆嗳气等症频作,其病机是
阿托品对缓解哪一项症状无效治疗过程中患者出现瞳孔扩大、意识。模糊、烦躁不安、尿潴留应考虑
典型阿米巴肠病的粪便为
处于炎症浸润期的压疮,下列哪项不对( )。
房地产行业年检与验证管理有利于()。
下列不属于对会计信息质量要求的是()。
某省甲市A县公安局和乙市B县公安局对一起治安违法事件的行政处罚管辖权发生争议,应()。
结构化生命周期方法将信息系统的开发过程划分为5个阶段,即系统规划阶段、系统分析阶段、系统设计阶段以及
TheUScourtsystem,aspartofthefederalsystemofgovernment,ischaracterizedbydualhierarchies;therearebothstateand
最新回复
(
0
)