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
2024-09-20
39
管理
问题
According to the passage, what do people often think about astronomers? [br]
(17)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 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.(18 - 1)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.(19)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 people can study it.(18 -2)Because most astronomical objects are very remote, the light we receive from them is rather feeble.(18 - 3)(20)But by using a telescope as a camera, long time exposures can be made. In this way objects that are hundreds of times too faint to be seen by just looking through a telescope can be photographed.
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
语义理解题。根据句(20)可知,如果天体太远,光线太弱用望远镜看不清楚时,可以用长时间的曝光拍摄来解决这一问题。因此正确答案为B。
转载请注明原文地址:https://tihaiku.com/zcyy/3766262.html
相关试题推荐
Whatdoesthecampaignintendtotellpeople?[br][originaltext]Smokersin
Whatdoesthecampaignintendtotellpeople?[br][originaltext]Smokersin
Whatdoesthecampaignintendtotellpeople?[originaltext]SmokersinEngla
Accordingtothepassage,adognamedRicocould______.[br][originaltext]
RichpeopleinBritainhavebeenhuntingfoxes______.[br][originaltext]Fo
RichpeopleinBritainhavebeenhuntingfoxes______.[br][originaltext]Fo
RichpeopleinBritainhavebeenhuntingfoxes______.[br][originaltext]Fo
RichpeopleinBritainhavebeenhuntingfoxes______.[originaltext]Foxesan
Whatisreportedtohavecausedthedeathofatleast17people?[br][original
Whatisreportedtohavecausedthedeathofatleast17people?[originaltext]
随机试题
Thehonestyoungman______thebossthathewouldtryhisbestfortheexcellen
屋顶的类型与建筑物的屋面材料、屋顶结构类型及建筑造型要求等因素有关。
关于Ⅳ高脂血症的描述错误的是A.LDL↑ B.血清外观浑浊 C.电泳深前β带
从所给的四个选项中,选择最合适的一个填入问号处,使之呈现一定的规律。 A.如上
护士发现血液检查血红蛋白与血细胞比容持续降低提示A、细菌感染 B、有活动性出血
硫酸镁的中毒现象首先表现为A、呼吸减慢 B、心率减慢 C、尿量减少 D、血
断流阀宜采用(),应能直接观察阀门(),具有手动复位功能。(A)
马克思主义诞生的标志是( )。A.《共产党宣言》的发表 B.中国共产党的成立
申请期货公司首席风险官的任职资格,应当具有从事期货业务3年以上经验,并担任期货公
下列施工安全检查项目中,属于季节性专项检查的有( )。A.防暑降温 B.施工
最新回复
(
0
)