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
2023-12-19
44
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://tihaiku.com/zcyy/3286207.html
相关试题推荐
[originaltext](1)AccordingtoarecentstudyinSweden,almosthalfofourunna
[originaltext](1)AccordingtoarecentstudyinSweden,almosthalfofourunna
[originaltext](1)AccordingtoarecentstudyinSweden,almosthalfofourunna
[originaltext](1)AccordingtoarecentstudyinSweden,almosthalfofourunna
[originaltext]M:We’realmostfinished.Couldyouhandmethewhitepepper?W:
[originaltext]M:We’realmostfinished.Couldyouhandmethewhitepepper?W:
[originaltext]M:We’realmostfinished.Couldyouhandmethewhitepepper?W:
[originaltext]Rodeosweren’talwaysthebigentertainmentshowsthatwesee
[originaltext]M:TellmeMrs.Evans,howdidyoucometobeabeardedlady?W:
[originaltext]Itiscommonknowledgethatmusiccanhaveapowerfuleffecto
随机试题
HowoftendotheFOMCmemberstypicallyputtheirheadstogether?[br][origina
IwishI__(see)yesterday’sfootballmatchonthespotinsteadofwatchingit
体现课程的体系结构,也是学校教育和教学工作的指导性文件的是()。A.教学计划
判定患者有无共济失调,可通过以下哪种试验检查?( )A.轻瘫试验 B.闭目直
下列选项中,艺术家及其作品搭配错误的是()A.安迪·沃霍尔《玛丽莲·
新生儿寒冷损伤综合征复温原则是A.逐步升温,循序渐进 B.供给足够水量,缓慢升
湖南岳阳岳阳楼与湖北武汉黄鹤楼、江西南昌滕王阁并称为“江南三大名楼”,是“中国十
经营机构告知投资者不适合购买相关产品或者接受相关服务后,投资者仍坚持购买的,(
患者,男性,22岁,4天前劳累后出现右下后牙区胀痛,进食、吞咽时加重。昨日起出现
按工程进度编制施工阶段资金使用计划,首要进行的工作是()。A.计算单位时间
最新回复
(
0
)