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、The surface of the ocean is expanding. B、Volcanic activity is increasing. C、The surface of Earth contains tons of cosmic dust.
A、The surface of the ocean is expanding. B、Volcanic activity is increasing. C、The surface of Earth contains tons of cosmic dust.
admin
2017-02-13
20
问题
M: How did you like yesterday’s astronomy class?
W: It was interesting. But the point she was trying to make seemed a little far-fetched.
M: Oh, the new theory that ocean water came from comets?
W: Yeah. Do you remember what it was based on?
M: Some recent satellite photos, I think. Apparently, space satellites recently detected thousands of small comets colliding with earth’s outer atmosphere, almost 40, 000 per day.
W: OK, so they collided with the atmosphere. So that’s what created the water?
M: It’s not that the collision created water. Comets contain water. They are made up mostly of cosmic dust and water. When they collide with the atmosphere, they break up. And the water they contain rains down to earth. Ocean water came from that rain.
W: Oh. Well, this morning I asked my geology teacher about that. He said that most geologists didn’t accept it.
M: Why not?
W: Their research indicates that most of the water molecules from the comet would have burned up as they fell through the atmosphere. Enough rain couldn’t have reached the earth to fill up the ocean.
M: Well, did the geologists have an alternative theory to explain where ocean water came from?
W: Yeah, he said the more traditional view is that the ocean water came from volcanoes.
M: From volcanoes?
W: Right. They say volcanic fumes are mostly steam. And they claimed that it was the volcanic steam that created the oceans, not rain from comets.
Questions 8 and 11 are based on the conversation you have just heard.
8. What did they learn in yesterday’s astronomy class?
9. What did recent photographs from a space satellite indicate?
10. According to the new theory, where did ocean water come from?
11. Who disagreed with the new theory described in the conversation?
选项
A、The surface of the ocean is expanding.
B、Volcanic activity is increasing.
C、The surface of Earth contains tons of cosmic dust.
D、Thousands of comets are colliding with Earth’s atmosphere.
答案
D
解析
本题考查细节。根据录音“Apparently,space satellites recently detected thousands of small comets colliding with earth’s outer atmosphere,almost 40,000 per day.”可知,每天大约有4万个小彗星与地球的外气层相碰撞。因此选项D为正确答案。
转载请注明原文地址:https://kaotiyun.com/show/CPi7777K
0
大学英语四级
相关试题推荐
A、Hethinksit’sgoodforhealthtohavesomeicecream.B、Hecan’teatanysnacksbecauseofhistoothache.C、Heonlybelieves
Whatdostudentsthinkofe-textbooks?AdministratorsatNorthwestMissouriStateUniversitywantedto【B1】______.Earlierthisy
It’sverypopulartoseecollegeanduniversitystudentsspendingtheirvacationpartyinginawarmbarwithnoparentsaroundi
A、BecauseMariadidn’tlikethegame.B、BecauseMariafellill.C、Becausehedidn’thavethetime.D、Becausehecouldn’tstandf
一家技术研究机构指出,全球范围个人电脑销量持续下降,而平板电脑正在取代个人电脑成为许多人的主要电脑装置。2013年第二季度的全球个人电脑出货量与去年同比下降11%。全球消费者正转而购买价格较为便宜的平板电脑。在新兴市场,价格便宜的平板电脑已经成为许多人的首
KentishTownRoadisaboringhighstreetinnorthLondon.Itcontainspoundshops,hairdressersandsomeoldhardwarestores.U
Forthispart,youareallowed30minutestowriteashortessayaboutaplacewhichyoulikemost.Youshouldstatethereasons
Eatingfruitsandvegetableshasprovedhelpfulinpreventingvariouschronic(慢性的)illnesses.Doesthatmeanthemorethebetter?
Thetermbiologicalclockisappliedtothemeansbywhichlivingthingsadjusttheiractivitypatterns,withoutany【B1】______c
随机试题
某成年男性头面部、右上肢及双足烧伤,估计其烧伤面积为【】
下列财产所有权的取得方式中属于原始取得方式的是()。
【真题(初级)】下列有关顺查法的提法中,正确的有()。
下列资产中,商业银行随时可以调度、使用的资金头寸是()。
以下选项中,不属于人力资源规划内容的是()。
赞成毛泽东农村包围城市的观点,提出“先有农村红军,后有城市政权”论断的领导人是()。
在后现代社会,艺术的概念越来越模糊,“人人都是艺术家”的口号无限地将艺术范围扩张了。从医学和科学角度上,有人说“遗体展览”以惊骇的态度戏弄了艺术,戏弄了艺术传统的美学标准。更有人说此类展览是认知领域的一个探索,它以其道德存在背景所产生的石破天惊的恶趣味和骇
设函数中有整型变量a,为保证其在未赋初值的情况下初值为0,应选择的存储类别是()。
ForecastingMethodsThereareseveraldifferentmethodsthatcanbeusedtocreateaforecast.Themethodforecasterchooses
PassageTwo(1)It’sagoldenageforstudyinginequality.ThomasPiketty,aFrencheconomist,setthebenchmarkin2014wh
最新回复
(
0
)