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 through space.
Contrary to popular belief, "falling stars" are not stars at all, but are meteors, solid bodies that travel through space.
admin
2010-02-17
55
问题
Contrary to popular belief, "falling stars" are not stars at all, but are meteors, solid bodies that travel through space.
Meteors,【C1】______ in size from that of a pinhead, to many tons, are 【C2】______ to the naked eye at night, when the friction between the 【C3】______ of the meteors and of the air, produces heat【C4】______ the meteors enter the earth’s atmosphere. The intense heat 【C5】______ the meteors, which leave a blazing trail of light in their 【C6】______ .
Most meteors 【C7】______ when they enter the earth’s atmosphere, 【C8】______ the large meteors, which are dragged through the earth’s atmosphere by theearth’s【C9】______ pull. After successful landings up on the earth, these huge【C10】 ______ Some scientists are renamed meteorites. theorize【C11】______ thousands of meteors fall to the earth during the daytime and the nighttime, but this theory is impossible to prove 【C12】______ to disprove, as most would necessarily land in water,【C13】______ covers most of the earth’s surface.【C14】______ , meteors and meteor particles, except the loners, travel together in 【C15】______ like bees, and travel 【C16】______ any direction they 【C17】______ Nature’s spec-tacular fireworks show, a "meteor view shower," comes into 【C18】______ the meteors encounter the upper layer of the earth’s atmosphere during the earth’s perpetual revolution 【C19】______ the sun. The friction produced when the meteors and the meteor particles【C20】______ the atmospheric air incinerates the swarms, and they fall towards the earth in a brilliant display of light.
【C18】
选项
A、before
B、when
C、after
D、unless
答案
B
解析
转载请注明原文地址:https://kaotiyun.com/show/Us9K777K
0
专业英语四级
相关试题推荐
Morethantwo-thirdsofpeoplewhotryjustonecigarettemaygoontobecomeregularsmokers,newresearchsuggests.Researche
WriteonANSWERSHEETTWOacompositionof200wordsonthefollowingtopic:ProfitsofPraiseYoua
Theyhavebeentryingtofindouttheidentityofthewriterofthe________letter,butinvain.
AccordingtotheUNICEFreport,greatprogresshasbeenmadeintheprotectionofworld’schildrenfrom______.
WhendidmanymoreChinesearriveinCalifornia?
Whichofthefollowingstatementsistrueaccordingtothenews?
Itwaslateintheafternoon,andIwasputtingthefinaltouchonapieceofwritingthatIwasfeelingprettygoodabout.Iwa
FriedFoodsFriedfoodshavelongbeenfrownedupon.Nevertheless,theskillet(平底煎锅)isaboutourhandiestandmostuseful
Whatcanbelearntaboutthetrial?
Allparentspushtheirkidsatleastalittle.Wepressureourkidstobepolite,learntoeat【C1】______andbeobedient.So,pre
随机试题
1999年9月,某生物研究所的研究员项冬向研究所申报了一项提高杂交水稻产量的科研成果。经研究所审查鉴定,认为此项研究成果具有一定价值,便以研究所名义逐级上报。经批准此生物研究所派代表参加全国科研评审大会并获得一等奖,且获得10万元奖金。项冬得知后,便向研究
关于子宫内膜癌化疗的指征不恰当的是
产生了特征X线现象的是
腹主动脉的分支包括脏支和壁支,其脏支不包括
考虑黄体萎缩不全,诊断性刮宫时间应在
某地一国家规划矿区内拟“上大压小”,关闭周边6个小煤矿整合新建一个大型煤矿,产煤涉及规模为400万t/a。根据项目设计文件,矿区地面有设计主井和副井各一处,通风井两处,洗煤厂一处。洗煤厂设尾矿库一座,洗煤废水能够重复利用。工程设矿井水地面处理站一个,拟配套
劳动争议调解委员会调解劳动争议应在当事人申请调解之日起( )内结案。
根据证券法律制度的规定,下列关于公开发行公司债券的表述中,正确的有()。
甲、乙、丙三兄弟共同继承一幅古董字画,由甲保管。甲擅自将该画以市场价出卖给丁并已交付,丁对该画的共有权属关系并不知情。根据物权法律制度的规定,下列表述中,正确的是()。(2016年)
正畸牙移动过程中,倾斜牙移动的最大压力与张力区部位在()。
最新回复
(
0
)