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
6
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
(honest)______speaking,heisnotatopstudentinmyclass.Honestly所填之词应为副词修饰现
[originaltext]TelephonebooksintheUnitedStateshavewhite,blueandyel
EnglishEssayAsthebeginningofaseriesoflectur
EnglishteachersnetworkELTECS-Chi-LWha
腹股沟区出现肿块,站立体位出现,躺下按住内环不再突出的是( )。A.腹股沟斜疝
抗血吸虫病的首选药物是A、乙胺嘧啶 B、酒石酸锑钾 C、乙胺嗪
A.胰岛素绝对不足 B.胰岛素相对不足 C.呼吸带烂苹果味 D.多尿、多饮
导管内乳头状瘤时,常出现的乳头溢液是( )。A.血性溢液 B.黄色或黄绿色溢
关于焊接工艺评定,下列说法不正确的是(),A.焊接工艺评定应在本单位进行,由本
施工组织设计的内容包括()A.工程概况 B.施工部署及施工方案 C.施工进度
最新回复
(
0
)