首页
登录
职称英语
According to the speaker, what do people often think about astronomers? [br] [o
According to the speaker, what do people often think about astronomers? [br] [o
游客
2024-10-08
27
管理
问题
According to the speaker, what do people often think about astronomers? [br]
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、To spend less time at their telescopes.
B、To overcome the problem of weak light.
C、To take more photographs.
D、To photograph astronomical objects without using a telescope.
答案
B
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3792058.html
相关试题推荐
AccordingtotheresearchbyNASA,anafternoonnap______.[br][originaltext]
AccordingtotheresearchbyNASA,anafternoonnap______.[br][originaltext]
AccordingtotheresearchbyNASA,anafternoonnap______.[originaltext]T
______wasnothitbyriotslastyearaccordingtothenews.[br][originaltext
WhichofthefollowingareNOTthefirstpeopletoreceivetheswinefluvaccina
Whatdoesthespeakermeanwhenhesays"Idon’tthinkIneedtotellyouwhyth
Whatdoesthespeakermeanwhenhesays"Idon’tthinkIneedtotellyouwhyth
Whatdoesthespeakermeanwhenhesays"Idon’tthinkIneedtotellyouwhyth
Accordingtothespeaker,whatdopeopleoftenthinkaboutastronomers?[origina
WhichofthefollowingisNOTanevidenceofsomepeople’scarelessnessindaily
随机试题
AnnaDouglaswas72yearsoldwhenshestartedwritinghernewspapercolumn
TheFrenchvisitor’sEnglishwassopoorthathefounditdifficulttomakehims
HowtoFindTimeforYourselfI.Introduction:waystoc
[originaltext]M:Whatdoyouthinkisthemostimportantpartintheworkofli
[originaltext]W:YouAmericansarefunny.Itseemsasifyouweremarriedwith
微博(microblog)是近几年开始兴起的一种社交网络服务。简单地说,就是将不超过140个字的几句话或者图片,通过电脑或手机发到微博上,随时随地和朋友
Asfoodistothebody,soislearningtothemind.Ourbodiesgrowandmusc
支付工资最少的企业是()。 A.甲企业B.乙企业C.丙企业D.丁企
患儿,男,10岁。患急性淋巴细胞白血病入院。治疗方案中有环磷酰胺。在化疗期间要特
A. B. C. D.
最新回复
(
0
)