首页
登录
职称英语
Many years ago people thought the earth was flat. They believed that the sky
Many years ago people thought the earth was flat. They believed that the sky
游客
2025-04-15
32
管理
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. [br] 【C17】
选项
A、run
B、explore
C、play
D、relax
答案
B
解析
A选项意为“运行、跑”;B选项意为“探索”;C选项意为“玩耍”;D选项意为“放松”。空白处为“如今,科学家几乎能够探索宇宙任何地方。”因此,B选项正确。
转载请注明原文地址:https://tihaiku.com/zcyy/4038042.html
相关试题推荐
ManypeopleinWaleshaveanaffinitywithmusic.A、reputationforB、solubilityi
Shypeoplenever______setouttoattractattentionofotherpeople.A、willingly
Accordingtoonesurveyof12,000people,about30percentofthosemakingN
Accordingtoonesurveyof12,000people,about30percentofthosemakingN
Accordingtoonesurveyof12,000people,about30percentofthosemakingN
Linguistshaveunderstoodfordecadesthatlanguageandthoughtareclosely
MostpeoplewhodevelopLymedisease,atick-borninfectionthat’sendemici
MostpeoplewhodevelopLymedisease,atick-borninfectionthat’sendemici
MostpeoplewhodevelopLymedisease,atick-borninfectionthat’sendemici
MostpeoplewhodevelopLymedisease,atick-borninfectionthat’sendemici
随机试题
Fordecades,thetelevisionwastheflagshipofanyconsumer-electronicspro
[originaltext]M:Weplantogotothebeachafterclass.Wanttocome?W:I’dl
Peopleinsunny,outdoorsystates—Louisiana,Hawaii,Florida—saytheyareth
材料在19世纪初,以普鲁士为首的许多邦已经对封建农奴制进行了改革,废除农民对地主
测绘人员外业作业时遇雷电天气时,适合区域是( )。A.屋檐下 B.山顶 C
直到3月中旬,长白山远望还是一片白雪皑皑。春天的脚步出了关外,到长白山脚下时,就
注册审查机构批准注册的,在决定批准之日起10个工作日内,将批准决定送达注册申请人
()是国际上最主要的直接投资方式。A.企业兼并 B.股票上市 C.融资 D
关于屋面涂膜防水施工的说法,正确的有( )。A.上下二层胎体增强材料应相互垂直铺
A.海藻糖 B.果糖 C.麦芽糖 D.水苏糖 E.乳糖蘑菇中含量较多是
最新回复
(
0
)