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
36
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,youareallowed30minutestowriteashortessayentitledTheNationalFitnessProgramfollowingtheoutlinegiv
Forthispart,youareallowed30minutestowriteashortcompositionentitledAVolunteerActivityfollowingtheoutlinegiven
Onlyhalfofwomenactuallyenjoybeingpraisedandmanyothersmisinterpretwell-meantwords,asoffensive,accordingtoanew
A、Thewomanhastoleavebecausesheforgottobringherticket.B、Thewomanhastostandherebecausetherearenoseatsleft.
A、Employerandemployee.B、Co-workers.C、Husbandandwife.D、Businesspartners.B工作商务类。事实细节题。男士抱怨他无法在这么短的时间内完成这么多的工作;女士说她也在相同的时间
Thewidespreaduseofsearchenginesandonlinedatabaseshasaffectedthewaypeoplerememberinformation,researchersarerepo
Thewidespreaduseofsearchenginesandonlinedatabaseshasaffectedthewaypeoplerememberinformation,researchersarerepo
Youknoweatingfruitandvegetablesisvirtuous.Butdidyouknowitcanalsomakeyoulookgood?Peoplewhoincreasedtheirint
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
随机试题
用柴胡疏肝理气,兼引诸药入肝经的方剂是
简述动脉血气分析最常用的采血部位及采血时的注意事项。
心肺复苏脑功能开始好转的迹象为()
DNA的高级结构是
A、纤维起于牙槽嵴顶,呈放射状向牙冠方向走行,止于牙颈部的牙骨质B、自牙颈部牙骨质,向牙冠方向散开,广泛地位于牙龈固有层中C、自牙槽嵴向冠方牙龈固有层展开,止于游离龈中D、起自根分叉处的牙根间骨隔顶,至根分叉区牙骨质E、自
对建设项目方案设计招标投标活动实施监督管理的部门为()。
李先生想设立一个信托,下列说法中合法的是( )。
给定资料1D村是J县西部一个具有千年历史的传统村落,秦皇古驿道就从D村东西的两个阁楼穿村而过,自古以来为晋冀交接之通衢,交通便捷。村中现有文化遗产丰富,明清式民居、庙宇、阁楼、桥梁等尤为引人注目,有“三桥四阁七庙”之称。民俗活动多样且丰富,村中已申请到一
Throughoutthewholeperiodofone’slifetime,theachievingofhappinesscanbeseenasour【C1】______andeverlastinggoal.Happ
What’sthemostpossiblerelationshipbetweenthetwospeakers?
最新回复
(
0
)