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提问人：网友陈珊发布时间：2022-05-12

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Astronomers(天文学家) can tell just how hot the surface of the moon gets.The side of t

Astronomers（天文学家) can tell just how hot the surface of the moon gets.The side of t

he moon toward the sun gets two degrees hotter than boiling water(沸水).The night side reaches 243 degrees below zero(零度).In an eclipse(月蚀),the earth's shadow falls on the moon.Then the moon's temperature may drop 300 degrees in a very short time.A temperature change like this cannot happen on the earth.Why does it happen on the moon？Astronomers think that the surface of the moon is dust.On the earth,rocks store heat from the sun.When the sun goes down,the rocks stay warm.But the dust of the moon cannot store heat.So when the moon gets dark,the heat escapes quickly.The moon gets very cold.

During an eclipse, the moon is ()

A、turned away from the sun

B、in the shadow of the sun

C、in the shadow of the earth

D、in direct sunlight

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更多“Astronomers(天文学家) can tell just how hot the surface of the moon gets.The side of t”相关的问题

第1题

What did eighteenth-century astronomers have in common with astronomers today？A．They could

What did eighteenth-century astronomers have in common with astronomers today？

A．They could not explain everything they detected with their instruments.

B．They knew the correct distances of objects they could not identify.

C．Their instruments were not powerful enough to detect spiral nebulae.

D．They argued over the natural brightness of variable stars.

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第2题

Now, a team of astronomers has discovered evidence that the object, whatever it may be, is

spewing vast quantities of energetic particles that collide with a surrounding irregular ring of cold hydrogen gas.

A、现在，一支天文学家团队已经发现了这样一个证据，即无论物体是什么，它都会喷出大量高能粒子，这些高能粒子会与周围不规则的冷氢气环相撞。

B、现在，一组天文学家发现了证据，证明这个物体，不管它是什么，都在喷出大量的高能粒子，这些粒子与周围不规则的冷氢气环碰撞。

C、现在，一个天文学家小组发现了证据，证明这个物体，不管它是什么，正在喷出大量的高能粒子，与周围不规则的冷氢气环碰撞。

D、现在，一组天文学家已经发现了证据，即这个天体（不管它是什么，）在不断地喷出大量高能粒子，同周围的形状不规则的冷氢气环相碰撞。

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第3题

Herschel collaborated with other astronomers of his time.A．YESB．NOC．NOT GIVEN

Herschel collaborated with other astronomers of his time.

A．YES

B．NO

C．NOT GIVEN

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第4题

Astronomers are finding a growing number of planets around other stars．

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第5题

A Star Is Born 1．The VLT （Very Large Telescope) is the wodd's largest telescope （望远

A Star Is Born

1．The VLT (Very Large Telescope) is the wodd's largest telescope (望远镜) and is taking astronomers (天文学家) further back to the Big Bang than they ever thought possible. Located 2,600 metres up in the Chilean Andes, it has four huge mirrors, each about the size of a London bus. The VLT is so powerful it can spot a burning match 10,000 kilometres away.

2．This astonishing power will allow astronomers to see events in space from the birth of stars to the collision (碰撞) of galaxies (星系) on the edge of the cosmos (宇宙).The VLT is giving astronomers their best-ever view of the cosmos. The power of the VLT to see the smallest detail at the furthest distances makes its designers amazed.

3．Take the case of Eta Carinae, one of the most explosive stars in the universe. This star produces ultraviolet laser rays (紫外线) and it will destroy itself in a few million years' time. It is five times brighter than the sun and when it explodes it is going to be a sight worth waiting for!

4．But it is at distances of millions, even billions, of light years that the VLT really shows its power. The VLT can detect light that set out on its journey before the earth even existed. This gives astronomers their first-ever detailed views of events that took place in the earliest days of the cosmos.

5．In other words the VLT is a kind of a time machine. It takes astronomers back to a time when complete galaxies crashed into each other. The effects of these past collisions can now be seen by scientists, and astronomers believe the telescope will reveal more about these exciting events in the years to come. One day, we might be able to say we have traveled back to the beginning of time, and we will have a much clearer picture of how our planet was born.

第 23 题 Paragraph 1____________

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第6题

伽利略（意大利数学家、物理学家、天文学家)

伽利略(意大利数学家、物理学家、天文学家)

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第7题

What is the lecture mainly about？A．How astronomers found the correct interpretation for a

What is the lecture mainly about？

A．How astronomers found the correct interpretation for a certain observation

B．How astronomers distinguish between two kinds of nebulae

C．Various improvements to the telescope over the last 300 years

D．An old problem in astronomy that remains unsolved

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第8题

哥白尼（波兰天文学家，提出日心说)

哥白尼(波兰天文学家，提出日心说)

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第9题

火星“运河”来源于1877年（）发现的火星暗沟。

A.意大利天文学家斯基帕雷利

B. 俄罗斯天文学家罗蒙诺索夫

C. 英国天文学家哈雷

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第10题

火星“运河”来源于1877年（）发现的火星暗沟

A.意大利天文学家斯基帕雷利

B.俄罗斯天文学家罗蒙诺索夫

C.英国天文学家哈雷

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第11题

According to the passage, artist astronomers spent their lives _________.A．exploring the p

According to the passage, artist astronomers spent their lives _________.

A．exploring the planets

B．studying geometry

C．creating images of space

D．producing rockets for space travel

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