首页
登录
职称英语
According to the speaker, what do people often think about astronomers? [origina
According to the speaker, what do people often think about astronomers? [origina
游客
2023-11-11
15
管理
问题
According to the speaker, what do people often think about astronomers?
Most people think of astronomers as people who spend their time in cold observatories peering through telescopes every night. In fact, a typical astronomer spends most of his or her time analyzing data and may only be at the telescope for a few weeks of the year. Some astronomers work on purely theoretical problems and never use a telescope at all.
You might not know how rarely images are viewed directly through telescopes. The most common way to observe the skies is to photograph them. The process is very simple. First a photographic plate is coated with a light-sensitive material. The plate is positioned so that the image received by the telescope is recorded on it. Then the image can be developed, enlarged and published so that many people can study it.
Because most astronomical objects are very remote, the light we receive from them is rather feeble. But by using a telescope as a camera long-time exposures can be made.
In this way, objects can be photographed that are a hundred times too faint to be seen by just looking through a telescope.
选项
A、They spend most of their time looking through telescopes.
B、They are constantly analyzing data.
C、They often live near observatories.
D、They devote a lot of time to theoretical problems.
答案
A
解析
转载请注明原文地址:https://www.tihaiku.com/zcyy/3177492.html
相关试题推荐
Amongthemanywaysinwhichpeoplecommunicatethroughspeech,publicspea
Amongthemanywaysinwhichpeoplecommunicatethroughspeech,publicspea
WhoisgoingtomeetinthecityofPotsdam?[originaltext]Environmentalmi
JosephConnorwas______.[br][originaltext]Forthefirsttimein6year
JosephConnorwas______.[originaltext]Forthefirsttimein6years,the
Wherecanpeopletakeadulteducationcourses?[br][originaltext]Millions
Wherecanpeopletakeadulteducationcourses?[br][originaltext]Millions
WhatisthepurposeofToastmastersclub?[br][originaltext]Welcometoour
WhatisthepurposeofToastmastersclub?[originaltext]WelcometoourToast
Whatdidnotthemanrequire?[br][originaltext]M:I’dlikeahaircut,please.
随机试题
Therearefourmainlearningstyles:imaginative,analytic,commonsenseand
Directions:Forthispart,youareallowed30minutestowriteanessaycomm
[originaltext]WhydidhegotoAlaska?[/originaltext]A、Becausetherewerebeaut
某市调查总队随机抽取2000名市民开展媒体需求调查,受访市民按文化程度分为小学及
过程改进策略包括()两个环节。 A.判断过程是否处于统计控制状态B.评价过
近年来,无论是产品质量还是控制技术都有了很大突破。在控制技术上,生产控制方式由过
消费品行业属于防守型行业。()
关于设备的自然寿命,下列说法正确的是()。A、自然寿命是指设备从开始使用直到由
根据《安全生产许可证条例》,国家对()实行安全生产许可制度。A.矿山企业
形状观察分析是指将绘制好的直方图形状与正态分布图的形状进行比较分析,除了看形状是
最新回复
(
0
)