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
35
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
Forthispart,youareallowed30minutestowriteashortessayentitledThePopularityofSelf-drivingTour.Youshouldwrite
Forthispart,youareallowed30minutestowriteashortessayentitledWhyAreMoreandMoreCollegeStudentsAbsentFromCla
Forthispart,youareallowed30minutestowriteashortessayentitledSpamMessages.Youshouldstartyouressaywithabrie
Thewidespreaduseofsearchenginesandonlinedatabaseshasaffectedthewaypeoplerememberinformation,researchersarerepo
We’renowwitnessingtheemergenceofanadvancedeconomybasedoninformationandknowledge.Physicallabor,rawmaterials,ami
Thetermbiologicalclockisappliedtothemeansbywhichlivingthingsadjusttheiractivitypatterns,withoutany【B1】______c
Thetermbiologicalclockisappliedtothemeansbywhichlivingthingsadjusttheiractivitypatterns,withoutany【B1】______c
中国是世界上最多产的(prolific)图书生产国之一,但中国人的阅读率偏低。近几十年来,中国的书籍供应量大大增加,但人们对书籍的兴趣却跟不上其增加的速度。一项调查显示,2012年中国人年平均读书4.39本。这一数据与一些发达国家有很大差距。如美国人年平均
根据传统,门前摆放的石狮应为一对,雄狮在左而雌狮在右。
A、Electronics.B、Collectingumbrellas.C、Collectingstamps.D、Playinggolfortennis.D男士表示自己对运动感兴趣,并在对话最后问女士高尔夫和网球是否合适,女士给出了肯定的
随机试题
下列说法错误的是()
肠套叠是婴幼儿最常见的急腹症之一,发病年龄集中于:()
A.肝外门静脉血栓形成B.肝炎后肝硬化C.血吸虫病D.布加综合征E.肝脓肿肝后型门静脉高压症的病因
下列四种遥感影像,空间分辨率从高到低排列正确的是()。
面层可由一层或数层组成,高等级路面可包括(),或称上(表)面层、中面层、下(底)面层。
下列对夹层资本融资的描述,不正确的是()。
阅读下面的文言文,回答问题。朱熹,字元晦,一字仲晦,徽州婺源人。父松字乔年。熹幼颖悟,甫能言,父指天示之日:“天也。”熹问曰:“天之上何物?”松异之。就傅,授以《孝经》,一阅,题其上曰:“不若是,非人也。”尝从群儿戏沙上。独端坐以指画沙,视之,八
“十二五”面临的是一场更加广泛而深刻的改革,将撬动一场深刻的利益关系调整,是中国改革的再次出发。下列选项中,不属于“十二五”期间改革主线的是()。
Whatdoesthehamburgersayaboutourmodernfoodeconomy?Alot,actually.OverthepastseveralyearsWaldoJaquithintendedt
以下有关选项组叙述错误的是()。
最新回复
(
0
)