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[originaltext]M: How did you like yesterday’s astronomy class?W: It was intere
[originaltext]M: How did you like yesterday’s astronomy class?W: It was intere
游客
2023-07-31
69
管理
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, 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, they’re collided with atmosphere. So that’s what created the water?
M: It’s not the collision that created water. Comets contain water. They’re 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 don’t accept it.
M: Why not?
W: Special 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、They are found under the oceans.
B、They were most active when earth was first formed.
C、Their emissions created earth’s atmosphere.
D、Their fumes are mostly water in the state of a gas.
答案
D
解析
信息明示题,女士指出,地质学者认为火山气体大多为蒸汽,故选D,考点 fill sth. up 意为“填写,填满,充满”,与fill 相关的短语还有:fill sb.’s shoes 接替某人的工作、职务等;fill in (for sb.)临时接替某人;fill sth. in 除了指“填写,补充,填满”以外,还可指“打发,消磨(时间)”,如: Jack filled in the afternoon watching television.杰克看电视以打发下午的时间
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