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
Many years ago people thought the earth was flat. They believed that the sky【C1】______a big upside-down bowl and that the sun, m
Many years ago people thought the earth was flat. They believed that the sky【C1】______a big upside-down bowl and that the sun, m
admin
2014-01-13
27
问题
Many years ago people thought the earth was flat. They believed that the sky【C1】______a big upside-down bowl and that the sun, moon, and stars were lamps hanging from the top of the bowl. Later, people【C2】______better. They found out that the earth【C3】______round.
We call the study of the skies and the planets astronomy, 【C4】______we call the watchers of the skies astronomer. Early astronomers thought the earth was the center of【C5】______They thought the heavens spun【C6】______the earth. Later, they changed their【C7】______. They knew the earth was not the center. They believed that the earth and the【C8】______planets spin around the sun. Today we know this is true.
Ancient scientists studied the skies【C9】______simple instruments. The first person【C10】______a telescope was named Galileo. In 1610【C11】______four moons around the planet Jupiter. Today【C12】______use more complex equipment. Some of these measure the brightness of light. 【C13】______break lights up into different colors. Radio telescopes make stars and planets【C14】______far closer than Galileo’s telescope could.
Early astronomers【C15】______five planets in the sky. Besides Earth, they knew about mercury, Venus, Mars, Jupiter, and Saturn. In 1781 a seventh one was discovered and named Uranus. Years later, astronomers found another planet and called it Neptune. The ninth planet to be found is called Pluto. It was not【C16】______until 1930.
Today scientists can【C17】______almost anywhere. They have reached the heavens with their spacecraft. In 1959, a spacecraft【C18】______took pictures of the dark side of the moon. The years later a spacecraft landed two Americans on the moon. Other important journeys into space【C19】______. Who knows? Maybe【C20】______human beings will live on another planet. Maybe you will be one of them.
【C19】
选项
A、followed
B、had followed
C、were following
D、follow
答案
A
解析
这个句子和前面几个句子都是在讲述过去发生的事情。陈述过去某个时间段发生的事情,用一般过去时即可,因此,A选项正确。
转载请注明原文地址:https://kaotiyun.com/show/YzQO777K
0
考博英语
相关试题推荐
Formostkindsofactivities,alargegroupofpeoplecanaccomplishmoreandhavemorefunthanonepersonalone.Forexample,
Formostkindsofactivities,alargegroupofpeoplecanaccomplishmoreandhavemorefunthanonepersonalone.Forexample,
Formostkindsofactivities,alargegroupofpeoplecanaccomplishmoreandhavemorefunthanonepersonalone.Forexample,
Formostkindsofactivities,alargegroupofpeoplecanaccomplishmoreandhavemorefunthanonepersonalone.Forexample,
Formostkindsofactivities,alargegroupofpeoplecanaccomplishmoreandhavemorefunthanonepersonalone.Forexample,
Oneofthe______ofthetrainingprogramisthatitenablestheyoungpeopletobebettercandidatesforemployment.
LastyearFrenchdriverskilled【56】than5,000peopleontheroadsforthefirsttimeindecades.Creditgoeslargely【57】the1
LastyearFrenchdriverskilled【56】than5,000peopleontheroadsforthefirsttimeindecades.Creditgoeslargely【57】the1
LastyearFrenchdriverskilled【56】than5,000peopleontheroadsforthefirsttimeindecades.Creditgoeslargely【57】the1
随机试题
ModernEnglishbeganwiththeestablishmentof______inEngland.()
A.类赫氏反应B.球后视神经炎C.周围神经炎D.电解质紊乱E.痛风样关节炎男性,18岁,因血行播散性肺结核在采用HRZE治疗2个月时,结核中毒症状及肺内病灶消失,但出现气管旁淋巴结肿大,考虑为利福平所致的反应
1996年王一名、赵乙丽结婚,夫妻感情不和。1998年,王一名离家出走音讯全无。2002年,赵乙丽向人民法院申请宣告王一名死亡。王一名的母亲得知后坚决反对宣告王一名死亡。2003年8月,人民法院宣告王一名死亡。2003年赵乙丽、丙结婚,2004年12月,丙
关于现金流量图绘制规则的说法,正确的有()。
背景A公司参与远离所在地炼钢厂的机电安装工程总承包的投标,投标前做了如下工作:1.分析了招标文件工程范围,本工程含机械设备安装、电气及自动化系统安装、钢结构及非标准件制作安装、工业给水排水施工、防腐及保温工程、筑炉工程。并分析本公司施工技术力量
音乐教育是以________为媒介,以________为核心的一种教育形式。
MichaelJacksonisoneoftheworld’sbestsingers.MichaelJacksonwasborninthemiddlewestofthecityofGary,Indiana,in
论述电视艺术中审美与娱乐的关系。
•Youwillhearabusinesspresentationabout3simplesellingtactics.•Asyoulisten,forquestions1—12,completethenotes,
Humansaresocial【B1】______.Theyliketoliveandworkingroups,andtherefore,theyformcouplesandfamilies,villagesandc
最新回复
(
0
)