首页
登录
职称英语
According to the speaker, what do people often think about astronomers? [br] [o
According to the speaker, what do people often think about astronomers? [br] [o
游客
2023-11-11
37
管理
问题
According to the speaker, 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 or 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 long-time exposures can be made.
In this way, objects can be photographed that are a hundred times too faint to be seen 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:https://tihaiku.com/zcyy/3177494.html
相关试题推荐
Whatisthepossiblerelationshipbetweenthespeakers?[originaltext]M:Ithink
Manyelderlypeoplearesufferingfromthe______disease,rheumatism,asacons
Ithinkmostpeoplewouldagreethattomanloveis______.nutritionistoplant
ThepeopleatthepartywereworriedaboutSusanbecausenoonewasaware______
Themeetingwassoprolongedandexhaustingthat______thespeakersstoppedfor
Therewasatimeinmylifewhenpeopleasked【C1】______forstoriesaboutwha
Therewasatimeinmylifewhenpeopleasked【C1】______forstoriesaboutwha
Therewasatimeinmylifewhenpeopleasked【C1】______forstoriesaboutwha
Therewasatimeinmylifewhenpeopleasked【C1】______forstoriesaboutwha
Therewasatimeinmylifewhenpeopleasked【C1】______forstoriesaboutwha
随机试题
ThisiswhatAfricahasinabundance,space,almost12millionsquaremiles
Whatisthefirstproblemthegirlnoticesaboutherfather’scooking?A、Heisno
ChoosingEnglishProgramsintheUSA1.Whatisyourgoal?Fora【C1】:2weekst
某患者,女,24岁继发性闭经10个月,检查卵巢不大,肌注黄体酮5天后停药无阴道出
A.清热利湿,舒筋止痛 B.清热利湿,利水通淋 C.活血化瘀,理气止痛 D
下列对滤过除菌法的说法错误的是A.只能滤除活的微生物B.适用于不耐热的低黏度药物
某建筑企业拟在西部某开发区建设一个生产基地项目,该建设项目实行的是公开招标。在
全口义齿的合力主要集中在A:尖牙和双尖牙区 B:双尖牙区 C:第二双尖牙区和
经营者和所有者的主要利益冲突,是经营者希望在创造财富的同时,能够获取更多的报酬、
贫血A、球形心 B、靴形心 C、梨形心 D、绒毛心 E、虎斑心
最新回复
(
0
)