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
39
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.
【C10】
选项
A、to use
B、used
C、uses
D、of using
答案
A
解析
空白处为定语修饰主语,动词不定式和动名词形式可以做定语,因此,A选项正确。B和C选项为动词,做谓语,故排除。
转载请注明原文地址:https://kaotiyun.com/show/7zQO777K
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,
Formostkindsofactivities,alargegroupofpeoplecanaccomplishmoreandhavemorefunthanonepersonalone.Forexample,
LastyearFrenchdriverskilled【56】than5,000peopleontheroadsforthefirsttimeindecades.Creditgoeslargely【57】the1
LastyearFrenchdriverskilled【56】than5,000peopleontheroadsforthefirsttimeindecades.Creditgoeslargely【57】the1
随机试题
某总经理把产品销售的任务委派给一位负责市场营销的副总经理,由其负责的所有地区的经销办事处,但同时总经理又要求各地区经销部办事处的经理直接向公司总会计师汇报每天的销售数字,而该总会计师也直接向经销部办事处经理下达命令。总经理的这种做法违反了权责对等原则。
烧伤早期出现代谢性酸中毒和/或有血红蛋白尿,输液中应尽早补充
人体内维生素D的主要来源是
在鉴定验收时,为了证明研究成果的新颖性,一般应进行__________。
某房地产开发公司通过招标出让方式取得了一宗毛地的使用权进行住宅和商业房地产开发。该房地产开发公司在编制建筑工程预算时,可将该开发项目划分为()等单项工程。
油罐按其不同结构形式可分为( )。
下面是某教师执教《不等式的运用》的教学过程。教学的具体环节如下:(1)揭示知识联系学生画均值不等式概念图,并展示,交流讨论,丰富概念图。(设计意图:引导学生总结梳理与均值不等式相关的知识结构,通过交流讨论,帮助学生
有n个叶结点的非满的完全二叉树的高度为()。
民法总则确立的民法基本原则有()。
Mr.Smithwasa【B1】______industrialist,buthewasnotsatisfiedwithlife.Hedidn’tsleepwellandhisfooddidnot【B2】______w
最新回复
(
0
)