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、It is losing energy. B、It is rotating once every 26.8 days. C、It is moving further away from the earth. D、It is travelling fas
A、It is losing energy. B、It is rotating once every 26.8 days. C、It is moving further away from the earth. D、It is travelling fas
admin
2022-09-21
36
问题
It takes 8. 3 minutes for the sun’s light travelling at 186 282 miles a second to reach the earth. At that speed, light could travel around the earth seven times in one second. The sun looks yellow-gold, because we’re viewing it through the earth’s atmosphere. Judging from its surface temperature, the sun’s color is probably closer to white. The temperature of the sun at its core is around 73 million degrees F. It takes 50 years for this energy to reach the sun’s surface, where we can see it as light. The English astronomer James Jeans once figured that if you placed a piece of the sun’s core, the size of the head of a pin, on earth, its heat would kill a person 94 miles away. The temperature of the sun’s photosphere, the part that sends us light, is about 10000 degrees F. The sun contains 99. 9% of the matter in our solar system. The sun produces more energy in one second than human beings have produced in all of our history. In less than a week, the sun sends out more energy than we could make by burning all the natural gas, oil, coal and wood on the earth. The earth receives one two-billionth of the sun’s power. With every passing day, the sun is losing energy, but it still has about 5 billion years of life left.
Questions 9 to 11 are based on the passage you have just heard.
9. According to the speaker, what is the travelling speed of the sun’s light?
10. According to the speaker, what is probably the sun’s actual color?
11. What is happening each day to the sun?
选项
A、It is losing energy.
B、It is rotating once every 26.8 days.
C、It is moving further away from the earth.
D、It is travelling faster.
答案
A
解析
转载请注明原文地址:https://kaotiyun.com/show/eIR7777K
0
大学英语六级
相关试题推荐
A、Tochecktheaccuracyofscales.B、Tocalculatethedensityofothermetals.C、Toobservechangesintheatmosphere.D、Tomeas
A、HowmanynativespeakersithadinShakespeare’stime.B、ThenumberofpeoplewithanadequateworkingknowledgeofitC、Thes
A、Thehotelassignedfive-bedroomforher.B、Thehotelofferedaspecialpackagetoher.C、Thehotelconfusedherwithanother
A、Checkyournumberandcallagain.B、Telltheoperatorwhathashappened.C、Asktheoperatortoputyouthrough.D、Asktheoper
A、Theyarenotinahurrywhentheysaythingsoutloud.B、Theyactasiftheyarereflectingoneverythingcarefully.C、Theyte
A、Ithashelpedeliminatetheissueofcuttingtreesforfarmland.B、Ithaseradicatedtheuseoffiretoclearland.C、Itbring
A、Inspiring.B、Exciting.C、Depressing.D、Confusing.C
A、£80000.B、£100000.C、£400000.D、£800000.C
A、Exciting.B、Interesting.C、Moving.D、Dull.DW:Ihaveneverseensuchaninterestingshow.IhopeyouenjoyeditasmuchasI
A、It’smodern.B、It’sexciting.C、It’scomfortable.D、It’sabnormal.BM:Whydoyoupreferlivinginalargemodemcity?W:Well
随机试题
洋洋乎与造物者游,而不知其所穷。
以下哪位科学家绘成了遗忘曲线
A.血浆胶体渗透压降低B.组织液静水压降低C.毛细血管通透性增加D.毛细血管血压增高E.淋巴和(或)静脉回流受阻严重丝虫病导致下肢水肿的原因是()。
伤亡事故按受伤性质划分可分为()。
影响计算机系统安全的主要因素有( )。
切线类技术分析方法中,常见的切线有()。Ⅰ.压力线Ⅱ.支撑线Ⅲ.趋势线Ⅳ.移动平均线
行业生命周期中最长的阶段是()。
x²+y²的最小值为2。(1)实数x,y满足条件:x²-y²-8x+10=0(2)实数x,y是关于t的方程t²-2at+a+2=0的两个实根
根据凯恩斯流动性偏好理论,当预期利率上升时,人们会()。
SummaryListentothepassage.Forquestions26-30,completethenotesusingnomorethanthreewordsforeachblank.America’
最新回复
(
0
)