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According to the passage, what do people often think about astronomers?
According to the passage, what do people often think about astronomers?
admin
2015-03-11
83
问题
According to the passage, what do people often think about astronomers?
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 photo graphic 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、They spend most of their time looking through telescopes.
B、They are constantly analyzing data.
C、They often live near observatories.
D、They devote a lot of time to theoretical problems.
答案
A
解析
细节题。原文说“大部分人都认为天文学家就是每个晚上都在冰冷的天文台用望远镜观察天空的人”。故A项符合题意。
转载请注明原文地址:https://kaotiyun.com/show/wWHK777K
0
专业英语四级
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