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
2023-11-02
43
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/3151694.html
相关试题推荐
I______thepartymuchmoreiftherehadn’tbeenquitesuchacrowdofpeoplet
Nowadays,theInternethasbecomepartofpeople’slife,andmillionsofyou
Ifyouarelikemostpeople,thenchancesareyouoften______otherswhilethey
Fortypeoplewerekilledina______ontherailwayyesterday.A、collisionB、collap
Manypeoplearemakingpromiseseveryday.Administrationdepartmentspromis
Mostpeoplewhomarryyoungstartoutlivinghandtomouth.Theunderlinedpart
AccordingtoanoticeissuedbyStateAdministrationofRadio,FilmandTele
Whilealotofpeopleadvocatetheprominentroleofadvancedtechnologyin
Aphenomenonemergesthatanincreasingnumberofon-jobpeople,especially
Theanimalprotectiongroupiscallingonpeopleto______furcoatsandcarefo
随机试题
IfDorothyhadnotbeenbadlyhurtinacaraccident,______inlastmonth’sOly
Thefamousline"Tobeornottobe"comesfrom______.A、MacbethB、HamletC、King
Wecannotmakeaprecisecalculationofthepriceuntilwehaveallthecosts.T
白细胞显微镜计数描述不正确的是A.充池时不能有气泡 B.白细胞≤4×10/L时
生产符合国家规定条件的来源于古代经典名方的中药复方制剂,在申请药品()时,可以仅
在金属材料的超声波检测中使用最多的频率范围是()A.1-5MHz B.2.5-
A.手太阳小肠经 B.手阳明大肠经 C.足阳明胃经 D.手少阳三焦经 E
在城市黄线范围内禁止进行的活动包括( )。A.违反城市规划要求,进行建筑物、构
患者女,44岁。胆石症患者,今餐后1小时突发恶心、呕吐、腹痛,抽搐,腹痛位于上腹
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性:
最新回复
(
0
)