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
According to the passage, what do people often think about astronomers?
According to the passage, what do people often think about astronomers?
admin
2016-02-29
25
问题
According to the passage, what do people often think about astronomers?
(17)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/her time analyzing data and may only be at the telescope 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.(18 - 1)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.(19)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 people can study it.(18 -2)Because most astronomical objects are very remote, the light we receive from them is rather feeble.(18 - 3)(20)But by using a telescope as a camera, long time exposures can be made. In this way objects that are hundreds of times too faint to be seen by just looking through a telescope can be photographed.
选项
A、To decrease the time it takes to photograph objects.
B、To avoid using a telescope.
C、To sharpen the color of what observe.
D、To obtain images of distant objects.
答案
D
解析
语义理解题。根据句(18—1)、(18—2)以及(18—3)可知,文章在介绍天文学家的工作过程时说:由于很多天体很远,因此天文学家们通常把天体拍摄下来以供研究。因此正确答案为D。
转载请注明原文地址:https://kaotiyun.com/show/cMWK777K
0
专业英语四级
相关试题推荐
IntelligenceAresomepeoplebornclever,andothersbornstupid?Orisintelligencedevelopedbyourenvironmentandourex
Whenthefirebrokeout,almostallthepeoplelosttheir_____andraninalldirections.
WhichofthefollowingsentencesisINCORRECT?
ProfessorSmithandProfessorMichael______ingivinguslectures.
WhatdoesProfessorDodgedo?
Whatistheonereasonastronomersmakelongtimeexposures?
Whatisthepurposeofthe"GreenMovement"?
Manychildrenfirstlearnthevalueofmoneybyreceivinganallowance.Thepurposeistoletchildrenlearn【C1】______experienc
InTheArtofChoosing,SheenaIyengar,abusinessprofessoratColumbiaUniversityandaleadingexpertondecisionmaking,tel
InTheArtofChoosing,SheenaIyengar,abusinessprofessoratColumbiaUniversityandaleadingexpertondecisionmaking,tel
随机试题
白酒中固形物含量的测定过程中,将烘干的蒸发皿放在干燥器中的作用是冷却。
急性化脓性腹膜炎的转归
可以作为片剂崩解剂的是
下列不属于新生儿呼吸窘迫综合征的X线特征表现的是()。
负责残损人民币回收和销毁的机构是()。
在国际买卖合同中,在货物的风险转移至买方之后,卖方对货物与合同不符概不承担责任。()
资本扣除项主要包括()。
财政法律关系的内容是指()。
关于天体及其运行,下列表述错误的是()。
宋朝画家文与可的住宅周围有很多竹子。他一年四季都注意观察竹子的变化,对竹子的形状、姿态有透彻的了解,因此,画出的竹子生动逼真。有诗云:“与可画竹时,胸中有成竹。”这一事实体现的哲学道理是()
最新回复
(
0
)