首页
登录
职称英语
What are speakers mainly discussing? [br] [originaltext]M: How did you like yes
What are speakers mainly discussing? [br] [originaltext]M: How did you like yes
游客
2023-11-22
29
管理
问题
What are speakers mainly discussing? [br]
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, that 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 professor about that. He said that most geologists draft 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.
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
本题考查事实。根据原文“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40,000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://tihaiku.com/zcyy/3209687.html
相关试题推荐
Wheredoesthemanwork?[br][originaltext]F:Henry,Christmasiscoming.Don’
Wheredoesthemanwork?[originaltext]F:Henry,Christmasiscoming.Don’tyou
______politicianswerekilledintheterroristattack.[br][originaltext]A
______politicianswerekilledintheterroristattack.[br][originaltext]A
TheWHOsaysmillionsofpeopleareatrisk______.[br][originaltext]TheWo
WhendidmanymoreChinesearriveinCalifornia?[br][originaltext]M:Inthee
WhendidmanymoreChinesearriveinCalifornia?[br][originaltext]M:Inthee
Whycouldn’tthemanputonmoreweight?[originaltext]F:Henry,why?Youlook
Whendidthestoryhappen?[br][originaltext]M:Mum,I’mgettingbored.Could
Whendidthestoryhappen?[originaltext]M:Mum,I’mgettingbored.Couldyoute
随机试题
HowlongdidthetouristsspendinlifeboatsfloatingontheAntarcticOcean?[b
Adsareeverywhere.Theyareonourtrains,theyareonourplanes,theyare
In2018,Chinacelebratedits40thanniversaryofthereformandopening-up.Gre
吉林省最东端的()最近处距日本海仅15千米,距俄罗斯的波谢特湾仅4千米。A.珲春
设ε1,ε2,ε3,ε4为数域P上4维线性空间V的一个基,V上的一个线性变换σ在
A.黄柏 B.厚朴 C.杜仲 D.牡丹皮 E.肉桂粉末中可见分枝状石细胞
癫痫持续状态判断的标准之一,是指一次发作的时间至少超过A.10分钟B.15分钟C
假设在汇率不变的情况下纽约投资市场利率比伦敦高,二者分别为9.8%和7.2%,则
(2018年真题)关于项目进度计划及其优化的说法,正确的有( )。A.计划中的关
癌性胸腔积液 A.胸腔积液WBC>10X109/L伴恶臭 B.血性胸腔积液,
最新回复
(
0
)