1 . 阅读下面短文并完成下方的题目。

When we look up at the night sky, we see the twinkling stars. But what we don’t see is the space junk (垃圾) floating up the space. Now there may be as many as 170 million pieces of space junk in Earth’s orbit (轨道). If they hit our satellites or spaceships, they can destroy them and make them stop working.

Facing the big danger by space junk, scientists are working hard on its cleanup although it’s really a tough job and takes a long time. The European Space Agency (ESA) plans to use a “junk truck”, ClearSpace-1, in 2025. It’s a spaceship that can find its target and move close to it, then catch it with its four “arms”. This is not going to be an easy job because even the smallest junk circles Earth as fast as 8 kilometers a second. Once it catches the junk, the spaceship will carry it back to Earth. This is because the junk will burn up when traveling through the atmosphere (大气层), so there won’t be much left when it reaches Earth. However, the spaceship itself will burn up at the same time.

Since the original cleanup plan will cause huge loss, scientists are trying to work out other plans. One new plan is to send a spaceship carrying special tools, which are used to shoot to stick into the space junk, moving it away from the orbit and throwing it into Earth’s atmosphere.

Space junk is a huge threat which endangers our satellites or spaceships, but why haven’t space agencies around the world done anything yet? One reason is the cost. To catch one piece of space junk larger than 10cm wide would cost between $4,000 and $60,000 (about 30,000 to 436,000 yuan) per kilogram.

With space traffic increasing, all nations have to work together to find out more ways to reduce space junk, or there will be more in-space accidents.

阅读短文，根据短文内容完成填空。（每空限填一词）

SOME INFORMATION ABOUT SPACE CLEANING PLAN: ✧   Scientists are trying to work out space cleaning plans because space junk is     1     to satellites and spaceships. ✧   ESA plans to use ClearSpace-1, a     2    , to clean up pieces of space junk by catching them and taking them to Earth’s atmosphere. ✧   The space junk travels so     3     that it’s difficult for ClearSpace-1 to catch it. ✧   In the new space cleaning plan, a spaceship is used to     4     the space junk into Earth’s atmosphere but not to carry it there. ✧   Although the     5     of space cleanup is very high, it is something that all nations must do.

2 . 阅读下面短文，从短文后的五个选项中选出可以填入空白处的最佳选项。选项中有一项为多余选项。

The moon is round and bright on a fine night. But in fact, it isn’t as beautiful as people say in the fairy tales (神话故事).     1     It’s hot in the day and cold at night. In space (太空), the moon is our nearest neighbor.     2     If you walk to the moon, it will take you eight years and nine months. If you go there by bike, it will take you nearly two years and three months.     3     When you get there, you will find there are no birds or fish there.     4     The moon is much smaller than the earth. The earth is 49 times as large as the moon.

A．If you go there by train, it will take you 200 days.

B．Moon cakes are usually round.

C．There is no air or water on it.

D．And there are no flowers or trees, either.

E．It’s about 380, 000 kilometers away from the earth.

3 . 阅读下面短文，从短文后的五个选项中选出可以填入空白处的最佳选项。选项中有一项为多余选项。

Many people believe that the Moon was once part of the Earth and broke away millions of years ago.     1    

There are high mountains, deep valleys and wide flat spaces on the Moon. Animals and plants can’t live on the Moon because it has no air or water. There are no clouds, no rain and no snow, either.

Sound needs air to travel.     2     So there can be no sound there. The Moon is a silent（寂静的） place.

The Moon has no light of its own. It looks bright because the Sun’s light shines on it. During the day, the rocks become hotter than boiling water.     3    

The Moon is about 383 thousand kilometers away from the Earth.     4     But it would take a car nearly six months to travel this way.

A．There is no air on the Moon.

B．It takes a spaceship about three days to reach the Moon.

C．Other people say that it came from another part of space.

D．This is because the Moon is closer to the Sun than the Earth.

E．Nobody lives on the Moon.

4 .

People never stop exploring space. We sent probes (探测器) to the moon and Mars. Now the sun is our goal. China sent its first solar observation satellite Xihe (太阳探测卫星羲和号) on October 14. It will help scientists learn more about the shining star.	Did you know?
	■The temperature inside the sun can reach 15 million degrees!
	■960,000 Earths could fit inside(装在……里面) the sun.
	■The sun is about 4.6 billion (十亿) years old. But it’s young and strong.
	How does the sun affect Earth?
	■The sun makes energy for all life on Earth.
	■Solar storms (太阳风暴) can affect weather on Earth. Big ones may also make our phones and TVs stop working.

1. What can we learn about Xihe?

A．Xihe can change the sun’s temperature and speed.

B．Xihe will stay in space for at least three years.

C．Xihe may watch the sun for twelve hours a day.

2. According to the passage, ________ can affect (影响) the weather on Earth.

A．the moon

B．the satellite

C．solar storms

3. What can we learn from the passage?

A．China sent its first solar observation satellite Xihe to the moon.

B．The sun is about 46 billion of years but is young and strong.

C．The sun makes energy for all life on Earth so that it is really important.

4. Where is the passage most probably from?

A．A storybook.

B．A travel guide.

C．A science magazine.

5 . 根据短文内容及首字母提示，填写所缺单词把答案写在横线上 (每空限填一词)。

The Sun is very i    1     to us because it p    2     us with light and heat. D    3     the free time, we always go out and enjoy the sunshine. We see lots of r    4     on talking about the Sun. It will go on shining b    5     for about 5 or 6 billion years. How long it is!

6 . 阅读下面短文，掌握其大意，然后从各题所给的A、B、C、D项中，选出最佳选项。

The universe (宇宙) is everything out in space. Nobody ________ how large the universe is. When we talk about the universe, we ________ the Earth, the Sum, the Moon and all the stars, and the space between them.

Now let me tell you something about the ________. It is like a large ball. It ________ around the Sun. And ________ and land cover it. If you are in a spaceship and ________ the earth from space, you will find that there are some large blue parts. They are the seas, and about 70% of the Earth’s surface is water.

We live on the outside part of the Earth. Around us is the air. It takes the earth 24 hours to turn in the full ________. When you see the sun shining ________, it is the day for you. But when the earth turns you away from the sun, everything around you becomes ________.

Can you tell me something else about the universe? I’m ________ in it and want to learn more about it.

1.

A．studies

B．knows

C．asks

D．forgets

2.

A．protect

B．leave

C．mean

D．see

3.

A．universe

B．Sun

C．Earth

D．Moon

4.

A．goes

B．waits

C．shows

D．keeps

5.

A．water

B．ice

C．snow

D．cloud

6.

A．watch

B．hear

C．feel

D．touch

7.

A．world

B．circle

C．part

D．way

8.

A．easily

B．brightly

C．quickly

D．slowly

9.

A．cleaner

B．brighter

C．warmer

D．darker

10.

A．honest

B．lucky

C．interested

D．tired

7 . Do you know anything about the Moon? How much do you know about it?

    1     Scientists have told us so much about the Moon. So it’s easy for us to have the idea of going to the Moon. But what would it be like to really go there?

The Moon is an unfriendly place. There is no air or water. There are only lots of dust and mountains around on it.     2     The temperature of the Moon is different from day to night.     3     However, it’s very cold at night.

    4     As we know, sound can only travel in the air but there is no air on the Moon. So people can’t hear any sounds on it.

But from the Moon, you can see our beautiful Earth. It is shining more brightly than the other stars in the dark.     5     The photos would be wonderful.

A．So there are no animals or plants there.

B．The Moon is also a very quiet world.

C．Do you want to go there?

D．You can take some photos with your camera.

E．When the Sun shines in the day, the temperature is very high.

8 . Thousands of years ago, Chinese poet Qu Yuan wrote the poem Tianwen, meaning quest for heavenly truth. Inspired by the great poet, China has named its upcoming series of planetary exploration missions(任务) ________ the poem. The first one in the series—a Mars exploration mission—has been named Tianwen One.

The first step for the Tianwen series is to ________ a Mars probe(航天探测器) this year, which will mark the start of China’s exploration of the Red Planet. The probe is ________ to orbit, land on and explore Mars in one mission. After this mission, China plans to visit Mars again in 2028, aiming to ________ soil from the surface of the planet and bring it to Earth.

Mars has been a popular target for space exploration. Countries like the US and Russia have been exploring it ________ the 1960s. “It can be said that Mars is the second most popular heavenly body after the moon,” said Li Chunlai.

This is partly because Mars is relatively(相对地) close to Earth ________ other planets. Also, its ________ is quite similar to that of Earth. Scientists have tried to ________ signs of life on Mars and understand how it may have developed in such environment.

There have been 56 Mars missions so far, of which 26 have been ________, according to Digital Trends. The US has sent orbiters like the Mars Odyssey and probes like Mariner 4 and Opportunity. India also sent a probe in 2013. China tried to send a probe to Mars using a Russian rocket in 2011, but it ________.

1.

A．by

B．under

C．after

D．to

2.

A．land

B．launch

C．fly

D．set

3.

A．expected

B．wished

C．required

D．invited

4.

A．pick

B．dig

C．bury

D．collect

5.

A．since

B．in

C．on

D．during

6.

A．referred to

B．connected to

C．thanks to

D．compared to

7.

A．soil

B．air

C．environment

D．temperature

8.

A．look for

B．look up

C．look through

D．look into

9.

A．joyful

B．successful

C．peaceful

D．cheerful

10.

A．broke

B．dropped

C．failed

D．fell

9 .

What has many rings but is not a shopping mall? It is Saturn (土星). Its rings look really beautiful! But unluckily, they will disappear within 300 million years because of “ring rain”. Saturn’s rings are made of ice and rocks. The gravity (重力) pulls these things and makes them fall down to the planet. About 600,000kg of these things fall every minute! They could fill an Olympic-sized swimming pool in half an hour. Scientists don’t have an answer how the rings came out. Some think that large comets (彗星) hit Saturn’s moons. The moons then broke up into pieces and became the rings. Others think the rings are just part of Saturn. Saturn has seven main rings. They are different in size and width. E ring is the farthest from Saturn. It is the largest planet ring in our solar system(太阳系).

1. How many main rings does Saturn have?

A．300

B．600,000

C．7

D．300

2. What makes the rings fall down?

A．The gravity.

B．Large comets.

C．The moons.

D．The solar system.

3. Are Saturn’s rings the same in size and width or different?

A．No, they aren’t.

B．Yes, they are.

C．The same.

D．Different.

4. What does the underlined word “disappear” mean?

A．出现

B．消失

C．增加

D．减少

10 . June 25th, 2119
Dear Bill,

I’m on the moon and everything is great. Now I live in the Moon Hotel. It is so nice! I can see our planet from my room.

Today I went to visit the largest meteorite crater (陨石坑) on the moon. It is so cold in the crater. You can’t believe how big it is! Tomorrow I’m going to climb Mount Apollo, and then I’ll visit Armstrong Museum. Neil Alden Armstrong was the first man to walk on the moon. Then it’s time for me to go home.

I will take photos and share them with you when I go back to the earth.

Your best friend,

Anna

1. Who does Anna write the letter to?

A．Her cousin.	B．Her teacher.
C．Her parents.	D．Her friend.

2. Where does Anna come from?

A．The earth.	B．The moon.
C．The sun.	D．Mars.

3. It is ________ in the largest meteorite crater.

A．warm	B．cold
C．scary	D．bright

4. What is the last thing Anna will do?

A．Visit the Moon Hotel.	B．Climb Mount Apollo.
C．Go to the museum.	D．Visit a meteorite crater.

5. What is the best title?

A．The Future of the Moon	B．A Letter to the Moon
C．A Girl on the Moon	D．A Trip to the Moon