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
36
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:http://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
PestControlP1:Pestcontrolisatleastasoldasagriculture,astherehasal
[audioFiles]2021m9s/audio_ve01005j_0010_210831[/audioFiles]
审查利润表所列指标的可信性时所涉及的指标是()。A.流动比率 B.存货周转率
请认真阅读下面的材料并按要求作答。 根据上述材料完成下列问题。 (1)简
4个杯子上各写着一句话。第一个杯子:每个杯子都是酸性溶液;第二个杯子:本杯中是矿
箱子中红黄蓝黑四种颜色的小球,数量分别是20颗、16颗、14颗和10颗,现在从箱
关于颞下颌关节紊乱病描述不正确的是A.并非指单一个疾病,而是指一组关节疾病的总称
男性,40岁,某印刷厂工人,因持续性腹绞痛,阵发性加剧而入院。患者自诉近五年来经
我国卫生部规定,一名供精者的精子最多只能提供给() A.8名妇女受孕 B.6
建设工程施工项目经审查符合竣工验收条件和标准后,即可由()组织正式验收A.监理单
最新回复
(
0
)