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
28
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.
【C20】
选项
A、someday
B、some day
C、some days
D、somedays
答案
A
解析
A选项意为“有一天”;B选项意为“某一天”;C选项意为“一些天”;没有D选项这种用法。空白处为抽象的将来总有一天会,A选项符合原意,因此,A选项正确。
转载请注明原文地址:https://jikaoti.com/ti/ue6YFFFM
0
考博英语
相关试题推荐
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
LastyearFrenchdriverskilled【56】than5,000peopleontheroadsforthefirsttimeindecades.Creditgoeslargely【57】the1
LastyearFrenchdriverskilled【56】than5,000peopleontheroadsforthefirsttimeindecades.Creditgoeslargely【57】the1
随机试题
用不了几十年,人工智能就会超越多种人类自认独有的能力。对我们这一代人来说,这是个巨大的挑战,也许我们需要“非理性”地应对。计算机占领了曾专属于人类的工作——那些需要知识、策略甚至创造力的工作。在这种“劳动分工”之下,我们应把人类的工作定位在与机器互补,而非
血液凝固:
患者,男性,52岁。因胸闷、胸痛4小时入院。入院查体:血压86/60mmHg,心率44次/分,律齐。心电图示:Ⅱ、Ⅲ、aVF导联ST段抬高、Q波形成。其心律失常最可能的是
该患儿最可能的诊断是哪种检测方法有助于诊断和治疗
女性,50岁,畏寒、发热伴剧烈腰痛5天,T39℃,左肾区明显扣痛,血WBC11.8×109/L,N80%,尿常规提示尿蛋白(+),WBC10/HP。最可能的诊断是
在宪法文本的不同部分,“国家”一词的内涵与表现形式是不同的。在我国宪法中,主要是在三种意义上使用该词:一是在统一的政治实体意义上使用的“国家”;二是在与社会相对的意义上使用的“国家”:三是在与地方相对的意义上使用的“国家”。下列哪些选项是在第一种意义上使用
《旅行社条例》规定,县级以上各级人民政府()等有关部门,应当按照职责分工,依法对旅行社进行监督管理。
图书不同于报纸和期刊的主要特点有()。
“落雁”指的是我国四大美女中的()。
设f(x)=a1ln(1+x)+a2ln(1+2x)+…+anln(1+nx),其中a1,a2,…,an为常数,且对一切x有|f(x)|≤|ex-1|,证明|a1+2a2+…+nan|≤1.
最新回复
(
0
)