首页
登录
职称英语
What made this eclipse so unique? [originaltext] On December 25, 2000, many p
What made this eclipse so unique? [originaltext] On December 25, 2000, many p
游客
2024-12-27
11
管理
问题
What made this eclipse so unique?
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 the 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. You 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 scen
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://tihaiku.com/zcyy/3887052.html
相关试题推荐
The10RussiansleftU.S.because[originaltext](6)RussianPrimeMinisterVlad
GeneralBanKi-moonisurgingtheBurmesegovernmentto[br][originaltext]
Whatisthemainideaofthenewsitem?[originaltext][6]IsraeliJusticeMi
WhichofthefollowingstatementsisINCORRECTaboutMissChan?[originaltext]M:
Whichofthefollowingstatementsistrue?[br][originaltext]TheUnitedSt
Whichofthefollowingstatementsistrue?[originaltext]TheUnitedStatese
PresidentObamaisnowfocusingon______[br][originaltext]PresidentObam
ThefollowingpeoplemetMexicanPresidentEXCEPT[br][originaltext]Mexica
Tensionshaveflaredbecause[br][originaltext]Thelatestattack,onanEv
Tensionshaveflaredbecause[originaltext]Thelatestattack,onanEvangeli
随机试题
Thispassageismainlyaboutthebenefitsofdevelopingrobotsandhowpeoplear
施工现场出入口应标有企业名称或者企业标识。主要出入口明显处应设置()等制度牌。
先天性胆管囊性扩张症可发生在A.肝内胆管 B.胰管 C.胆囊管 D.肝内胆
听力损失为71~90dB是A.中度聋 B.中重度聋 C.重度聋 D.轻度聋
26岁,初产妇,妊娠39周,规律宫缩18小时,肛查宫口8cm,先露0,胎膜未破,
男性,15岁,少尿、水肿5天,咳嗽气短不能平卧1天,起病前2周喉痛3天,血压17
《巴塞尔协议Ⅱ》中的第()支柱要求银行通过建立一套披露机制,通过市场力量驱动银
以满足交通运输的要求为主要功能并承担城市主要的交通量及与对外交通联系的是( )
长矩形平面现浇钢筋混凝土框架-剪力墙高层结构,楼、屋盖抗震墙之间无大洞口,抗震设
随机选择5所幼儿园小班儿童,进行某种新流感疫苗的预防效果观察,随访3年结果表明9
最新回复
(
0
)