首页
登录
职称英语
[originaltext] On December 25, 2000, many people across North America receive
[originaltext] On December 25, 2000, many people across North America receive
游客
2025-01-06
34
管理
问题
On December 25, 2000, many people across North America received a rare Christmas treat when the moon passed in front of the sun resulting in a partial solar eclipse.
Solar eclipses occur when the moon passes between tile earth and the sun, and the moon’ s shadow covers part of the earth, and a total solar eclipse takes place when the moon’s shadow blocks out the sun entirely. What made this particular solar eclipse unique was that such an event has occured on December twenty - fifth only 30 times during the past 5000 years, the last time in 1954. But people must be exceptionally careful when attempting to view a solar eclipse. Without taking precautionary measures, one can permanently damage the retina of the eyes; however, there are several safe methods of witnessing this heavenly marvel.
First, you can view a solar eclipse by using eclipse safety glasses for filtering out the sun’ s harmful rays. They should be used when any part of the sun is visible. Sunglasses can block out some of the sun’s ultraviolet rays, but the results can be very deceptive. The eye’ s natural reaction to this darken state when wearing sunglasses is to make the pupil larger, which allows in more light and can intensify the damage to your eyes. u can also watch an eclipse by projecting the sun’ s image on a piece of paper either by using a telescope, or easier yet, by creating a pinhole in a piece of paper and viewing the result on another piece of paper, thus called a pinhole projector.
Only during a total eclipse when the sun is completely and briefly covered can you watch the eclipse without eye protection. Even then, extreme caution should be taken. In case you didn’t catch this last spectacular eclipse on December twenty - fifth, 2000, there ’ s no need to fret. Your posterity can record the next eclipse on Christmas in the year 2307, but only if their visiting the west coast of Africa for the holidays.
选项
A、Its location for viewing in the world
B、its timing on the calendar.
C、Its movement across the sky.
D、Its beautiful scene.
答案
B
解析
对于这次日偏食之所以独特的原因,报道中说得很清楚:What made this particular solar eclipse unique was that such an event has occured on December twenty-fifth only 30 times during the past 5000 years,the last time in 1954。即这种发生在圣诞节的日食在过去的5000年中只有30次,可见它这种日期是非常稀罕的,故正确答案应为B。
转载请注明原文地址:https://www.tihaiku.com/zcyy/3900765.html
相关试题推荐
[originaltext]TheU.S.lawmakerswitnessedinterrogations,touredcellblocks
[originaltext]ThenotoriousYasukuniShrineinTokyoonSaturdaymadefallac
[originaltext]ThenotoriousYasukuniShrineinTokyoonSaturdaymadefallac
[originaltext]AninterviewwithHelenaNorberg-Hodge,aboutherworkinapr
[originaltext]WorldTradeOrganizationchiefSupachaiPanitchpakdisaysall
[originaltext]Question:MrFischer,congratulationsontheEuropeanConstitutio
[originaltext]Question:MrFischer,congratulationsontheEuropeanConstitutio
[originaltext]Question:MrFischer,congratulationsontheEuropeanConstitutio
[originaltext]Question:MrFischer,congratulationsontheEuropeanConstitutio
[originaltext]Question:MrFischer,congratulationsontheEuropeanConstitutio
随机试题
【B1】[br]【B8】[audioFiles]audio_eusm_j01_301(20099)[/audioFiles]nickname根据上文als
[originaltext]Theworld’srichest10%areresponsibleforhalfofallcarbo
Thenatureofworkischanging.Recenttechnologicaladvances,ashiftfrom
A)Withhisdrywitandimpeccable(无瑕疵的)style,JamesBondhasbeendefying
将乐音体系中的音,按照一定音高关系和次序,由低到高,或由高到低,依次排列起来叫做
某工程在浇筑楼板混凝土时,发生支模架坍塌,造成3人死亡,6人重伤,经调查,系现
沪深300股指期货的当日结算价是指期货合约的最后1小时成交价格按照成交量的加权平
运用陶冶法应注意的要求有()。 A.坚持严格要求B.创设良好的情境 C.
乳牙的发育是从胚胎第几周开始的A.2 B.4 C.8 D.6 E.10
在建设工程施工阶段,由于承包商自身的原因造成工期延误时,监理工程师对承包商修改后
最新回复
(
0
)