首页
登录
职称英语
According to the passage, what do people often think about astronomers? [br] [o
According to the passage, what do people often think about astronomers? [br] [o
游客
2023-11-02
56
管理
问题
According to the passage, what do people often think about astronomers? [br]
(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://tihaiku.com/zcyy/3151692.html
相关试题推荐
RichpeopleinBritainhavebeenhuntingfoxes______.[br][originaltext]Fo
RichpeopleinBritainhavebeenhuntingfoxes______.[br][originaltext]Fo
Whatisreportedtohavecausedthedeathofatleast17people?[originaltext]
Howmanypeoplewereinjuredintheaccident?[br][originaltext]Yesterday,
PeoplearoundFloridastockeduponthefollowingEXCEPT______.[br][originalt
PeoplearoundFloridastockeduponthefollowingEXCEPT______.[originaltext]
Accordingtothenewsitem,theAffordableCareActis______.[br][originaltex
Accordingtothenewsitem,theAffordableCareActis______.[originaltext]
Accordingtothepassage,whatdopeopleoftenthinkaboutastronomers?[br][o
Accordingtothepassage,whatdopeopleoftenthinkaboutastronomers?[origina
随机试题
Iwasabouttofallasleep______therewasaknockatthedoor.A、asB、whileC、the
简述中班儿童表演游戏的特点与指导要点。
Thechangeinthatvillagewasmiraculou
专用规程主要内容中图表主要包括()等。一次系统主接线图$;$交直流系统图$
小便混浊如膏,可见于下列哪些病证中A.膏淋 B.尿浊 C.消渴 D.癃闭
关于我国石窟艺术的下列表述,正确的有() ①石窟是封建统治阶级宣传佛教的产物②
基础心理学是研究()。 (A)正常成人心理现象的心理学基础学科 (B
在库存清查核算中,盘盈的存货应当( )。A.按同类或类似存货的市场价格计入其他
国际直接投资是指以控制国外企业的()为核心的对外投资。A.控股权 B.人
共用题干 假设某储户2012年8月1日存入银行定期存款20000元,存期一年,
最新回复
(
0
)