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
Contrary to popular belief, "falling stars" are not stars at all, but are meteors, solid bodies that travel throng space. M
Contrary to popular belief, "falling stars" are not stars at all, but are meteors, solid bodies that travel throng space. M
admin
2010-04-24
46
问题
Contrary to popular belief, "falling stars" are not stars at all, but are meteors, solid bodies that travel throng space.
Meteor, ranging in size from that of a pinhead, to many tons, are visible to the naked eye at night, when the friction between the surfaces of the meteors and of the air, produces heat as the meteors enter the earth’s
atmosphere. The intense heat burns up the meteors, which leave a blazing trail of light in their wake.
Most meteors do burn up when they enter the earth’s atmosphere, with the exception of the large mete- ors, which are dragged through the earth’s atmosphere by the earth’s gravitational pull. After successful landings upon the earth, these huge bodies are renamed meteorites. Some scientists theorize that thousands of meteors fall to the earth during the daytime and the nighttime, but this theory is impossible to prove or to disprove, as most would necessarily land in water, which covers most of the earth’s surface.
Generally speaking, meteors and meteor particles travel together in swarms like bees, with the exception of the loners, and travel in any direction they choose. Nature’s spectacular fireworks show, a "meteor shower", comes into view when the swarms encounter the upper layer of the earth’s atmosphere during the earth’s perpetual revolution around the sun. The friction produced when the meteors and the meteor particles rub against the atmospheric air, and they fall towards the earth in a brilliant display of light.
The source of meteors traveling through space has yet to be explained satisfactorily. For thousands of years, the common belief held, was that meteors, or "falling stars," were literally from out of this world. In 467 BC, Roman historians recorded the extraordinary fall of a meteor to the earth.
Today, astronomers support the theory that comets spawn the swarms. The comets’ offspring, the mete- or swarms, travel in regular orbits, similar to the earth’s orbit around the sun. One must be quite patient to witness such a swarm, or a meteor shower, as the swarms cross the earth’s path only once every 33 years. This spectacle of light is, however, well worth the wait.
Which of the following is NOT the feature of meteors?
选项
A、Different in size.
B、Made of solid.
C、Hot and bright.
D、In groups.
答案
C
解析
细节理解题。对应原文第1,2,4段,分别提到流星的特点是固体B,大小不一A,成群D。题目问哪一个不是流星的特征,因此答案为C。swarnl n.(密集的)一大群,一大批
转载请注明原文地址:https://kaotiyun.com/show/0U2K777K
0
专业英语四级
相关试题推荐
Themotheralmost________whenshelearnedthathersonwasshotdead.
Shynessisthecauseofmuchunhappinessforagreatmanypeople.Shypeopleareanxiousandself-conscious;thatis,theyaree
Childrenare______tohavesomeaccidentsastheygrowup.
Scientistsclaimthatairpollutioncausesadeclineintheworld’saverageairtemperature,Inordertoprovethattheory,ecol
Johnis______hardworkingthanhissister,buthefailedintheexam.
Itisusualtoclassifytypesofproductionasjobproduction,batchproductionandflowproduction.Injobproduction,products
ThedoctorassuredSusanthatthepainwould______onehouraftershetookthemedicine.
Thisarticlewaswritten______forChinaDaily.
InaChineseuniversityorcollege,astudentissometimesobligedtosharearoomwithoneormoreroommates.Brieflydiscussw
"100yuanforthismirror!I______itwouldcostsomuch,"saidthewomaninsurprise.
随机试题
对于工作在线性区的运算放大器而言,其同相输入端与反相输入端的电位_________。
腰痛日久,屡次复发者,可用活血化瘀配合搜风通络的药物,如
男性,45岁,2小时前无明显诱因黑便,随即感头昏,心悸,曾一度晕厥,体查:P124次/分,BP10/8kPa(75/60mmHg)腹平软,剑突下轻压痛,肠鸣音活跃,此时最首要的措施是
对青光眼具有治疗作用的药物是
按照《特种设备安全监察条例》的定义,特种设备包括锅炉、压力容器、压力管道等8类设备,下列设备中,不属于特种设备的是()
ThereisgrowinginterestinEastJapanRailwayCo.Ltd,oneofthesixcompanies,createdoutoftheprivatizednationalrailways
根据以下情境材料,回答下列问题。2016年,甲(男,26岁)、乙(女,19岁)、丙(男,17岁)三人在××省B市因为抢劫银行被抓获。三人在抢劫过程中,杀害了银行工作人员丁。三人都是××省A市人,在被抓之前,三人常在本市和其他地区共同作案。如果
某单位的网络要配置一台DHCP服务器,为网络内部的计算机自动分配IP地址。在考虑DHCP服务器时,回答以下问题。配置DHCP服务器应具备什么条件?
Monitoringheartpatients’exerciseaswellasathletesexercising,isnowdonebysmalltransmittersbroadcastingphysiological
SavingsareasimportantasinsurancetoprotectpeopleagainstlargefinanciallossesOnemightshareagreatfinanciallossw
最新回复
(
0
)