What is the one reason astronomers make long time exposures?A、To spend less time

游客2023-11-05 38

问题 What is the one reason astronomers make long time exposures?

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

解析细节题。文章后面讲到由于大部分天体距离很远，所以我们能捕捉到的它们所发出的光线也很微弱，但如果用望远镜充当照相机就可以进行长时间曝光，以此将物体拍下来。故B项正确。

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What is the one reason astronomers make long time exposures?A、To spend less time

Youallknowthereasonswhichhaveimpelledmeto______thethrone.A、renderB、

ThereasonBeethovenwentawaytothecountryis______.A、thathewasgradually

Whatisthepossibi9reasonforthecandidatesfailtogetjobsattheBBC?[br]

Whatisthepossibi9reasonforthecandidatesfailtogetjobsattheBBC?[ori

Yourreasonsfordemandinganincreaseinwagesare______.A、inaccurateB、inadeq

ThereasonwhyIleftbeforethemeetingendedwas________________Iwasbored

Whichofthefollowingismentionedasareasonforthelowpopulationgrowthra

Whichofthefollowingismentionedasareasonforthelowpopulationgrowthra

ThewomanlovetoliveinthecityforthefollowingreasonsEXCEPTthat[br][

ThewomanlovetoliveinthecityforthefollowingreasonsEXCEPTthat[origin

Housingofficialssaythatlatelytheyarenoticingsomethingdifferent:stu

IthasbeenmonthssinceTinaMoorelastbitintoabagelorasliceoftoas

世界知识产权组织于1974年成为联合国组织系统的一个专门机构，其总部位于()

患儿，8个月。未及时添加辅食和维生素D。近1月来，多汗夜惊，烦躁不安，前囟开大，

1名中学生突然发热、咽痛、"杨梅舌"，病后第2天，从耳后、颈部开始出现皮疹，然后

Thechangeinthatvillagewasmiraculou

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从所给四个选项中，选择最合适的一个填入问号处，使之呈现一定规律性： A.如上图

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