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
2024-10-11
37
管理
问题
According to the passage, 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/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. (16) The plate is positioned so that the image received by the telescope is recorded on it. (15)Then the image can be developed 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, (17) long time exposures can be made. In this way, objects that are a hundred times too faint to be seen can be photographed 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:http://tihaiku.com/zcyy/3796018.html
相关试题推荐
AccordingtoresearchersinTaiwan,sealevelswouldbemuchhigherif______.[o
Whatisthepassagemainlyabout?[br][originaltext]Thedelicatematerial
Whatisthepassagemainlyabout?[originaltext]Thedelicatematerialthatm
Inthepast,hip-hopwasaplaceforpeopletosingabout______.[br][original
HowmanyofficersdoestheHongKongPolicedepartmentroughlyhaveaccordingto
Accordingtothepassage______.[br][originaltext]Unconsciously,weallke
Accordingtothepassage______.[br][originaltext]Unconsciously,weallke
Accordingtothepassage______.[originaltext]Unconsciously,weallkeepac
Accordingtothenews,whathashappenedlastautumn?[originaltext]LastOct
WhathappenedtotheU.S.economyinthepasttwoandahalfyearsaccordingto
随机试题
Youshouldalways______sometimepracticingEnglishifyouwanttomakeprogress
解方程11x-4-8x=2(x+4)-2x。x=4。
WhatkindoftopicsdoyouthinkDonnadoesNOTlike?[originaltext]M:Well,Don
Advertisementcanbethoughtof"asthemeansofmakingknowninordertobu
Thefeaturesoficehotelsareconstantlyevolving,asthebuildingsarereconst
Evenwhen__________tosuchtoughliving
某企业希望利用控制图对生产批量大、长期进行加工的轴外径尺寸进行监控,为此,首先确
我国境内的期货交易所不对会员实行数量控制,只要申请就可以成为会员。( )
经口磷化锌中毒出现的典型症状是()A.腐蚀性口腔炎 B.肌肉震颤、抽搐 C
如果应聘者的着装、表情、动作等影响了考官对面试结果的判断,这种面试偏差称为(
最新回复
(
0
)