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
When you look up at the night sky, what do you see? There are other【B1】______bodies out there besides the moon and stars. One of
When you look up at the night sky, what do you see? There are other【B1】______bodies out there besides the moon and stars. One of
admin
2016-03-02
59
问题
When you look up at the night sky, what do you see? There are other【B1】______bodies out there besides the moon and stars. One of the most【B2】______of these is a comet(彗星).
Comets were formed around the same time the Earth was formed. They are【B3】______ice and other frozen liquids and gases.【B4】______these "dirty snowballs" begin to orbit the sun, just as the planets do.
As a comet gets closer to the sun, some gases in it begin to unfreeze. They【B5】______dust particles from the comet to form a huge cloud. As the comet gets even nearer to the sun, a solar wind blows the cloud behind the comet, thus forming its tail. The tail and the【B6】______fuzzy(模糊的)atmosphere around a comet are【B7】______that can help identify this【B8】______in the night sky.
In any given year, about a dozen known comets come close to the sun in their orbits. The average person can’t see them all, of course. Usually there is only one or two a year bright enough to be seen with the【B9】______eye. Comet Hale-Bopp, discovered in 1995, was an unusually bright comet. Its orbit brought it【B10】______close to the Earth, within 122 million miles of it. But Hale-Bopp came a long way on its earthly visit. It won’t be back for another four thousand years or so.
【B4】
选项
答案
Now and then
解析
此处应填入状语成分。now and then意为“偶尔,有时”。
转载请注明原文地址:https://kaotiyun.com/show/72e7777K
0
大学英语四级
相关试题推荐
Asfoodistothebody,soislearningtothemind.Ourbodiesgrowandmusclesdevelopwiththe【C1】______ofadequatenutritious
Asfoodistothebody,soislearningtothemind.Ourbodiesgrowandmusclesdevelopwiththe【C1】______ofadequatenutritious
Asfoodistothebody,soislearningtothemind.Ourbodiesgrowandmusclesdevelopwiththe【C1】______ofadequatenutritious
BeautyandBodyImageintheMediaA)Imagesoffemalebodiesareeverywhere.Women—andtheirbodyparts—selleverythingfromfoo
BeautyandBodyImageintheMediaA)Imagesoffemalebodiesareeverywhere.Women—andtheirbodyparts—selleverythingfromfoo
BeautyandBodyImageintheMediaA)Imagesoffemalebodiesareeverywhere.Women—andtheirbodyparts—selleverythingfromfoo
BeautyandBodyImageintheMediaA)Imagesoffemalebodiesareeverywhere.Women—andtheirbodyparts—selleverythingfromfoo
BeautyandBodyImageintheMediaA)Imagesoffemalebodiesareeverywhere.Women—andtheirbodyparts—selleverythingfromfoo
随机试题
在短期生产中,当边际产量达到最大值时,下列哪项成本达到最小值()
当全球一体化的压力低、当地化的压力低时,跨国企业将采取()的竞争策略。
心理过程是指
患者主诉左下后牙残根,要求拔除。平时无不适症状。查左下第一前磨牙冠黄褐色残根状,探硬无龋坏,牙髓活力正常。应诊断为
甲委托乙购买一套机械设备,但要求以乙的名义签订合同,乙同意,遂与丙签订了设备购买合同。后由于甲的原因,乙不能按时向丙支付设备款。在乙向丙说明了自己是受甲委托向丙购买机械设备后,关于丙的权利,下列选项正确的是()。
Nativeads—oradsthattakeonthelookandfeelofthecontentsurroundingthem—aretakingoverdigitaladvertising.By
某中学在招生广告中明确提出:“从我校毕业的学生,男生是绅士,女生是淑女”,该校的培养目标反映了()
新旧知识的相互干扰是影响有意义学习和机械学习的知识遗忘的最重要原因。
教学中学生认识的形成既是目的,也是发展的手段,学生在学习过程中认识世界并实现着知、情、意、行的协调发展与人格的养成。这是指教学过程中学生认识的()
市政府决定在禁毒日进行禁毒宣传活动,为了保证宣传效果,领导指示由你负责此项工作,要求组织一些人员认真筹备,务必做好落实。禁毒宣传活动可以由多部门协同操作,作为负责人,你认为可以协同哪些部门?()
最新回复
(
0
)