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
65
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
Ournewsalesmanagerfoundoutthat______thejobdoneisnotaseasyasitfi
EXONERATE:A、disparageB、conquerC、arbitrateD、incriminateE、debilitateD
实际费用法是计算工程索赔时最常用的一种方法。当难以采用实际费用法时,发生多次索赔
基金销售适用性是指基金销售机构在销售基金和相关产品的过程中,注重根据基金投资人的
A.生片、糊片不得超过2%,药屑、杂质不得超过1%B.生片、炭化片不得超过3%,
男,45岁,因骨盆骨折住院。X线检查发现多部位溶骨性病变。实验室检查:骨髓浆细胞
Marshaconfessedthatsheknewnothingo
对变压器充电时下面那一项操作是正确的?()变压器充电时,应先合装有保护的电源
分解(代谢)物激活蛋白在DNA的结合部位是( )。A.CAP结合位点 B.启
某律师事务所共有12名工作人员。(1)有人会使用计算机;(2)有人不会使用计算机
最新回复
(
0
)