首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
A、Its location for viewing in the world. B、Its timing on the calendar. C、Its movement across the sky. D、Its beautiful scene. B对于
A、Its location for viewing in the world. B、Its timing on the calendar. C、Its movement across the sky. D、Its beautiful scene. B对于
admin
2010-02-20
46
问题
On December 25, 2000,. many Pe0Ple 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 pro- jecting 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://jikaoti.com/ti/i49YFFFM
0
专业英语八级
相关试题推荐
Up-Minneapolis,MN—Afatherwasrecentlyarrestedbythepoliceforspankinghischild,startingadebateamongtheAmericanpub
A、Brazilianchildrenusuallyhavelunchatschool.B、Brazilianwatchtelevisionalot.C、Braziliansarenormallyverybusy,sot
Whydoyoulistentomusic?Ifyoushouldputthisquestiontoanumberofpeople,youmightreceiveanswerslikethese:"Ilik
AnewcatastrophefacesAfghanistan.TheAmericanbombingcampaignisconspiringwithyearsofcivilconflictanddroughttocre
A、Americanworkerstendtostayinonejob.B、CropdustingjobsinAmericanarefew.C、Themobmovedveryslowly.D、Theirrelati
ThefirstpersonIcameacrosswho’dgotthemeasureofe-mallwasanAmericanfriendwhowashighupinabigcorporation.Some
Initseverydaylife,Italyisverymuchtheman’sworld.However,becauseoftheItalian’sunderstandingofforeigners,thewom
A、Themanmaybepaidforsomethingwhilehestaysonatschool.B、Furthereducationcollegeisanewstartfortheman.C、TheY
随机试题
全身炎症反应综合症的主要表现为()
内脏痛最主要的特点是
临床中进行肥达试验最常采用的方法为
预应力混凝土悬臂梁、连续梁、刚构、斜拉桥等结构都可采用()施工方法。
()的经营形式税负最重。
统计调查对象中,必须取得统计从业资格、持有统计从业资格证书的人员是()。
甲公司存货采用计划成本核算,2019年3月1日“原材料一A材料”借方余额为2900000元,“材料成本差异”贷方余额为22000元。当月采购A材料一批,取得货物增值税专用发票注明的价款为5522000元,增值税税额为883520元,全部验收入库。该批原材料
剩余权益收益等于()。
某夫妻二人因为感情不和提出离婚,那么二人在诉讼离婚时必经的庭审程序是()
关于诉讼时效制度的表述,正确的是()。
最新回复
(
0
)