首页
登录
职称英语
[originaltext]W: Wow! What a beautiful sunset.M: Enjoy it while it lasts, the
[originaltext]W: Wow! What a beautiful sunset.M: Enjoy it while it lasts, the
游客
2024-02-20
15
管理
问题
W: Wow! What a beautiful sunset.
M: Enjoy it while it lasts, the sun won’t be around forever.
W: You mean, one day the sun will disappear?
M: Not exactly disappear, but the sun will eventually burn out and die.
W: Won’t that make things really cold down here?
M: Actually, there won’t be any here. (19) When the sun dies, the earth will be destroyed too.
W: Wow, hold on, start from the beginning.
M: Okay. Like all stars, (20)the sun is basically a giant nuclear reactor that bums hydrogen to create energy. But like any reactor, the sun needs fuel to keep going. It’s been going strong for around 4. 5 billion years, and will probably keep burning for about five billion more.
W: But then, the fuel will run out?
M: Exactly. When it does, gravity will cause the sun’s core to contract. (21) When it contracts the core will get hotter, which will heat up the sun’s upper layers and make them expand. The sun will then become what’s called a red giant, and become bigger W: It is bad for us.
M: After a few billion years the core will begin to cool and expand. (22) The sun’s upper layers will expand and lose material, and eventually the core will cool enough to become a white dwarf star, and finally a black dwarf.
W: So, we’re pretty much doomed.
M: Yes, but not for billions of years. Who knows? By then, human might have been living on another planet.
19. What may happen to the earth when the sun dies?
20. How can the sun create energy?
21. What will happen to the sun’s core when it contracts?
22. What will the core finally be after the sun’s upper layer expanded?
选项
A、It will explode.
B、It will get colder.
C、It will get hotter.
D、It will be dark.
答案
C
解析
题干询问当太阳核缩小时它会如何。对话中男士说当太阳核缩小时,它会变得更热,故答案为C)。
转载请注明原文地址:https://tihaiku.com/zcyy/3466180.html
相关试题推荐
[originaltext]ThefirstEnglishdictionarywaspublishedin1604.Thedicti
[originaltext]ThefirstEnglishdictionarywaspublishedin1604.Thedicti
[originaltext]Oneoftheimportantmaterialsusedintheconstructionofbu
[originaltext]Oneoftheimportantmaterialsusedintheconstructionofbu
[originaltext]M:Well,here’syourroom,ma’am.Um...afteryou.W:Why,tha
[originaltext]M:Nowthatyouareallhere,letmeshowyouaroundthisplant,
[originaltext]M:Nowthatyouareallhere,letmeshowyouaroundthisplant,
[originaltext]M:Nowthatyouareallhere,letmeshowyouaroundthisplant,
[originaltext]Whenmyinterestshiftedfromspacetothesea,Ineverexpec
[originaltext]Whenmyinterestshiftedfromspacetothesea,Ineverexpec
随机试题
[originaltext]W:I’msickofbeingasalariedemployee.Whydon’twepoolours
PassageOneAmazonrainforest,normallyoneoftheworld’swettestregi
ResilienceIsAboutHowYouRecharge,NotHowYouEndure[A]Ascons
Anunsettlingfactaboutlungcanceristhatevencleanlivingcannotguara
[originaltext]ProfessorsfromYaleUniversityagreedinapaneldiscussion
热对流是指流体各部分之间发生的相对位移,冷热流体相互掺混引起热量传递的现象。()
下列有关开挖方式的说法中不正确的是()。A.深基坑工程中面积较大的基坑宜采
尿道感染最常见的致病菌是A.大肠埃希菌 B.变形杆菌 C.粪球菌 D.金黄
患者,男,50岁。以外伤入院治疗,在用氧过程中,家属私自将鼻导管氧流量调至10L
根据《水利水电工程施工组织设计规范》(SL303—2004(),工程施工总工
最新回复
(
0
)