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
31
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://jikaoti.com/ti/pe6YFFFM
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,
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
_______就是向客户说明买该汽车产品能够得到的好处,也向客户说明不买该产品所蒙受的各种损失,让客户自己权衡利弊,做出选择。
药品监督管理部门对药品抽样必须
女性,高三学生。在春游中不慎被毒蛇咬伤,伤口红肿、疼痛。关于毒蛇咬伤的局部创口反应,描述正确的是
钢材的成分一定时,其金相组织主要决定于钢材的热处理,其中影响最大的是(
我国金融市场体系包括()。①货币市场②债券市场③商品市场④金融衍生品市场
城乡居民的()是可用于投资、购买个人理财产品和服务的直接经济基础。
根据《国家中长期教育改革和发展规划纲要(2010~2020年)》规定,下列关于我国教育发展战略目标的说法不正确的是()。
大金石是缅甸一处著名的佛教朝拜圣地,它是一块耸立在悬崖边上的花岗岩巨石。海拔1100米,石头表面贴有金箔,石上建有一座7.3米的佛塔,完成下面各题。关于该巨石的说法,正确的是()。
"Ifwintercomes,canspringbefarbehind?"isfromShelly’s______.
Thecityisundergoingsuchtremendousdevelopmentthatnewbuildingsaregoing_______everywhereeveryday.
最新回复
(
0
)