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
2023-11-06
74
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. 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, 1ong 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
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。
转载请注明原文地址:https://tihaiku.com/zcyy/3162865.html
相关试题推荐
Mostpeoplehaterockmusic.【C1】______Iamnotbynatureanunreasonableor
Mostpeoplehaterockmusic.【C1】______Iamnotbynatureanunreasonableor
Mostpeoplehaterockmusic.【C1】______Iamnotbynatureanunreasonableor
Mostpeoplehaterockmusic.【C1】______Iamnotbynatureanunreasonableor
Mostpeoplehaterockmusic.【C1】______Iamnotbynatureanunreasonableor
Mostpeoplehaterockmusic.【C1】______Iamnotbynatureanunreasonableor
Mostpeoplehaterockmusic.【C1】______Iamnotbynatureanunreasonableor
Mostpeoplehaterockmusic.【C1】______Iamnotbynatureanunreasonableor
Mostpeoplehaterockmusic.【C1】______Iamnotbynatureanunreasonableor
Mostpeoplehaterockmusic.【C1】______Iamnotbynatureanunreasonableor
随机试题
•YouwillhearpartofabusinessnegotiationbetweenMr.MitchellandMadamLi.
Malestudentsemitmoreheatthanfemalestudentsdo,andthelargerastudenti
They______gaveusapresentation.A、everyB、everyoneC、eachD、eachoneC题意为:他们每
桥梁用锚具、夹具硬度二次检测仍有一个试件不合格,则该批产品不合格。()
RLC串联电路,当ωC
某大型超市通过多种形式对本单位的普通员工开展经常性的消防安全宣传教育和培训,下列
脏腑病变可反映于舌面,舌两侧多反映的脏腑病变是( ) A.上焦心肺 B.中
甲向乙出租音响设备一套,双方在合同中约定租期为一年。合同生效后第三个月,乙未经甲
上市公司只有在减少公司注册资本,与持有本公司股份的其他公司合并,将股份奖励给本公
许多冠心病患者都具备相似的个性特征,其中不包括A.情绪易冲动 B.时间紧迫感
最新回复
(
0
)