1 . 7:00 a.m.

It is August 7th today. It is early and it is time to eat. Chen Hua is ________. To eat her breakfast, she uses a knife, a fork, a spoon and... scissors. The scissors are needed to open food packages. Chen Hua floats (漂浮) at table with the others. She eats scrambled eggs (炒蛋), sausages, stewed (炖) tomatoes, and a banana. She also has orange juice. Astronauts can eat most foods in space even ice-cream.

12:30 p.m..

After lunch, Chen Hua brushes her teeth. It is not easy! Small ________ of water float in space. They are like little balloons. There are two special hoses (软管) for showers. One hose ________ water. The other hose takes it in. The astronauts do not use towels! Astronauts need a toilet too, but the toilet is a very special one. It does not have any water. It uses vacuum (真空装置) to take ________ away.

7:30 p.m.

It is time for Chen Hua to exercise. It is very important to exercise in space. On Earth, there is gravity(地球引力). You must use your muscles (肌肉) ________, to stand up, sit down and walk. In space, there is no gravity. You float. This makes your muscles weak. Astronauts must exercise for two hours every day. If they do not, their muscles will become weak and they won’t ________ walk when they return to Earth.

1.

A．sleepy

B．hungry

C．full

D．tired

2.

A．cups

B．bottles

C．glasses

D．drops

3.

A．puts off

B．puts on

C．puts out

D．puts up

4.

A．everything

B．something

C．anything

D．nothing

5.

A．a little

B．a few

C．at least

D．a lot

6.

A．like to

B．be able to

C．need to

D．have to

2 . On May 15, 2021, China’s Tianwen Ⅰ probe (探测器) successfully landed on Mars (火星)! This was a very difficult job. Only the US has done it before Tianwen I’s long journey began in July 2020. It went into the orbit (轨道) of Mars in February. After lying around Mars for 3 months, it finally touched down on Mars.

The final landing was very dangerous. People call it the “nine minutes of terror (恐怖)”. The probe had to do everything by itself because the control room on Earth had no way to help it. It had to slow down from 20,000 km per hour to zero. How did Tianwen I do it?

1. What’s the best title of the text?

A．Flying around Mars

B．Making a hard landing

C．On Mars

D．On Earth

2. When did Tianwen I’s journey start?

A．On May 15, 2021.

B．On August 15, 2021.

C．In July, 2020.

D．In February, 2020.

3. How did Tianwen I land on Mars finally?

A．With the help of humans.	B．Through the control room.
C．On its own.	D．By making itself faster.

4. From the text, we know that Tianwen I’s final landing is ________.

A．dangerous

B．easy

C．boring

D．interesting

3 . Chinese scientists found Changesite-(Y)—the sixth new lunar mineral in moon samples (样品) brought back by the Chang’e 5 lunar probe (探测器) in December 2020. It has become the first lunar mineral found by Chinese scientists, making China the third nation in the world, after the United States and Russia, to have achieved such a success, reported China Daily.

Changesite-(Y) looks crystal clear like a diamond (钻石). But its chemical content (化学组成) is different from any other known mineral. It has a high level of rare earth, reported China Science Daily. Li Ziying, chief scientist of the lunar sample research, said that the finding of this new mineral will help researchers study the history and physical traits (特征) of the moon. The value of the rare earth in it will also be studied.

Besides the new mineral, scientists also measured the content of helium-3 (氦-3) from the Chang’e 5 samples. Helium-3 is a valuable fuel (燃料) that can provide safer nuclear energy (核能). It is not radioactive (放射性的) and would not produce dangerous waste. On Earth, we have only 15 to 20 tons of helium-3 that can be used. But after studying the moon’s soil, scientists said there could be at least 1 million tons of helium-3 on the moon. That’s enough for all people on Earth to have clean energy for 10,000 years!

1. How many kinds of lunar minerals have scientists found so far?

A．One.

B．Three.

C．Six.

D．Seven.

2. According to the article, what still waits to be studied by scientists about the moon?

A．Its shape.

B．Its history.

C．Its looks.

D．Its size.

3. What does the discovery of Helium-3 from the Chang’e 5 samples tell us?

A．Helium-3 will not produce any waste.	B．Helium-3 on the moon may be radioactive.
C．The moon can provide us with enough clean energy.	D．There is enough nuclear energy on the moon for humans.

4 . 短文填空，从下面方框中选出10个单词，用它们的适当形式填入短文空格内，使短文意思正确、通顺（每词限用一次）

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In the minds of the Chinese, they always    1    the moon with gentleness and brightness, expressing their best wishes. On August 15 of the lunar calendar each year, the moon is full and it’s time to celebrate the Mid-Autumn Festival.

In Chinese traditional culture, the moon is a    2    of human’s feelings. In ancient times, from royalty to the ordinary family, it was an important custom    3    the full moon during the festival. Adults usually enjoyed delicious mooncakes with a cup of hot tea,    4    children ran around with bright lanterns. After nightfall, whole families went out for a walk under the stars, looking up at the full moon and thinking of their relatives or friends, as well as    5    was far from home. A line from a poem “The moon seen at home is brighter” expresses those feelings.

Besides, with respect to the history of Chinese civilization（文明）, China is the first nation to have the dream of flying to the sky.    6    the story of Chang’e to Dunhuang flying apsaras, all express Chinese ancestors’ desire to explore（探索）outer space. Many ancient Chinese poets also showed their great    7    in the moon through wonderful words. For example, the poet Li Bai, a    8    lover of the moon, wrote hundreds of poems about it.

The Chinese exploring moon project, named after Chang’e,    9    expresses this pursuit（追求）of the Chinese. The successful launch of Chang’e 1 not only    10    the groundwork（基础）for future exploration of the moon, but also made a long-held dream of the Chinese people come true.

5 . We have seen lots of science fiction movies about aliens. People travel to stars and even fight with aliens in the movies. But are there real aliens in the universe（宇宙）? Most of us think it is impossible, just like fairy tales. But the answer of some scientists is yes. So they have been searching for aliens in outer space for many years. They hope to find life signs of aliens.

Some scientists are used to using radio telescopes（望远镜）to search for aliens in space. In order to find aliens, they have worked hard for over half a century, but so far they have found nothing. Then some scientists guessed aliens might not want to connect us, but aliens could answer our messages. So some scientists sent radio signals into the universe. They hope one day they would be picked up by alien technology. These scientists want to prove（证明）that we are not alone in the universe.

But what should we do if the “alien phone” rings one day? Should we answer it? Stephen Hawking, the famous physicist, thought it could be dangerous to connect aliens. He said that the main purpose of aliens’ visiting to the earth could be searching for our resources（资源）. But other scientists think we have no need to worry. David Morrison, a NASA scientist, said, “If an alien radio signal reaches the earth from a planet thousands of light-years away, then they almost surely have solved all the problems we still have including the short of resources. Maybe they are much smarter than us, but why do they want to hurt us? I think we can try to connect them.”

根据短文内容，选择最佳答案。
1. ________ scientists believe there are aliens.

A．Few

B．All

C．Most

D．Some

2. Scientists have worked hard to find aliens for ________.

A．50 years	B．more than 50 years
C．40 years	D．more than 100 years

3. What is Stephen Hawking’s opinion? ________

A．Aliens are friendly.	B．Aliens are dangerous.
C．Aliens can’t be found.	D．Aliens have been on the earth.

4. Why does David Morrison think we want to connect aliens?________

A．Because we want to find aliens.

B．Because aliens have many skills.

C．Because we want to help aliens.

D．Because aliens are much smarter than us.

5. What’s the best title for the passage? ________

A．Are We Alone?	B．Stephen Hawking’s Idea
C．Protect Our Earth	D．How to find aliens

6 . Mars is a neighboring planet in our solar system. Scientists study Mars because it could hold clues that could help us learn more about life on Earth. For decades, scientists have used robot technology to better understand Mars. In December 2020, scientists introduced a group of robots named Mars Dogs at a yearly meeting.

The Mars Dog is a four-legged robot created by the company Boston Dynamics. It, along with other similar robots, can move around in ways the wheeled rovers (探测器) that explored the planet never could. Traditional Mars rovers are limited mostly to flat surfaces. However, many scientifically interesting Martian regions are only reachable by crossing very rough (崎岖的) ground or going below ground. Walking Mars Dogs are well-suited for such challenges—even if they fall down, they can get back up again. These robots can also explore underground by walking around rocks and lowering themselves into caves. They are even capable of selecting which path to take. While they do this, they collect measurements to build a map of what they see.

A Mars Dog would also be about 12 times lighter than present rovers. It would be able to travel much faster, reaching normal walking speeds of 5 kilometers per hour during tests. Compare that to the Curiosity rover that is presently exploring Mars. Curiosity rolls along the Martian surface at about 0.14 kilometers per hour.

Before going to Mars, the team members are testing the robot. They even take the robot to outdoor locations similar to Martian landscapes. Those tests show that the robots, without any help, can walk around rocks and map deep caves. “These behaviors could one day enable significant scientific missions to take place on the Martian surface and subsurface,” the scientists said at the yearly meeting.

1. What is the text mainly about?

A．Ways robot dogs walk on the Martian surface.

B．Robot dogs newly created for Mars exploration.

C．Differences between the Mars Dog and Curiosity.

D．Studies of Mars with the help of robot technology.

2. What advantage do Mars Dogs have according to paragraph 2?

A．They are much lighter.	B．They travel much faster.
C．They are better at seeking shelter (避难所).	D．They move around more flexibly (灵活) .

3. What is scientists’ attitude to the future of Mars Dogs?

A．Concerned.

B．Doubtful.

C．Hopeful.

D．Uncertain.

7 .

Our Milky Way Galaxy may be home to 2 billion planets that have the right conditions to support life. These planets have the correct temperature for liquid water. While no one knows what alien life would look like, if it is anything like life on earth, it would need water to keep alive. According to the research, there are nearly 2 billion habitable planets in the Milky Way Galaxy, which is just one of 100 to 200 billion galaxies in the universe.

The earth was formed 9 billion years after the Big Bang. Many of the planets in the Milky Way were formed millions and some even billions of years before the earth. If intelligent life had existed on any of these planets, they would be much more developed than humans. With that much time to develop the technology for space travel, we should have been visited by aliens many times.

So where is everyone? Some people believe that aliens have visited earth many times, and some governments of the world might have known very well. some believe that we have also been visited many times in the ancient past. They point to the Egyptian pyramids or the huge heads of Easter Island. They say that there was no way that ancient humans were able to create these structures without alien assistance.

According to Harvard professor Avi Loeb,        . For example, in 2017, a cigar-shaped object came within 33 million km of the earth as it passed through our solar system. It was named Oumuamua, which means “messenger from the distant past reaching out to us” in Hawaiian. Loeb says that its unusual shape and the fact that it sped up as it left our solar system sets it apart from anything else we’ve seen. He thinks it was a probe sent by an alien civilization. Jackie Fairey, says everyone should have reservation about this. She is one of many scientists who say there are more reasonable explanations for Oumuamua. That hasn’t stopped Professor Loeb. He has written a new book on Oumuamua called Extraterrestrial: The First Sign of Intelligent Life Beyond Earth.

1. According to the passage, if there were aliens, they ________.

A．could be similar to humans on the earth

B．must help build the Great Wall

C．would be smarter than humans on the earth

D．have a shorter history than humans

2. Which of the following can be put into the blank ________ in the passage?

A．we hasn’t been visited by aliens for we got nothing from the universe

B．we not only have been visited by aliens, but also have evidence

C．no one could be sure about whether the evidence we’ve got is true

D．all of researchers doubt about the fact that we have been visited

3. From the passage, we can infer that ________.

A．there are fewer than 100 billion habitable planets in the universe

B．some aliens did actually, and on the earth in ancient times

C．some governments received information from the oumuamua

D．scientists Leob doesn’t agree with the idea that Fairey holds

4. What’s the best title of the passage?

A．Where are all the aliens?

B．When will the aliens visit us?

C．Oumuamua: Have you ever been here?

D．How many habitable planets are there?

8 . Venus, the evening star, is a brother planet of our earth.     1     It’s covered with air and clouds. Scientists once thought that there might be some kinds of life under the clouds. Recently, they have found that it’s too hot—400℃.     2     Why is it so hot then?     3     CO₂ allows the heat of the sun to go to the ground. At the same time, it prevents the heat from going out.     4     Thus（因此）most of the heat from the sun is kept in the air forever. The temperature goes up every year, and it’s 400%℃ now.

The United Nations suggested that all leaders in the world should meet to discuss cutbacks（缩减）of CO₂. Other people in Europe have started a battle called “Green Peace Movement”.     5     No one would like to change our green earth into a red hot planet like Venus.

A．This is called “the greenhouse effect”.

B．It moves around the sun, just as the earth does.

C．They try to keep the earth green.

D．So no living things can live there.

E．The answer is very simple—because the air has much CO2 in it.

9 . I rise in the east, and it is day. I send my light into your room, and tell you it is time to get up. When I shine, you can not lie in bed or sleep. You must work and study.

I send my light here and there. I shine over the trees, the houses, the hills and the water, and I make everything beautiful.

I am high up in the sky, higher than the highest mountains, higher than the clouds. Sometimes I hide(藏)my face behind a thick cloud, and you cannot see me. But when there are no clouds and the sky is blue, and when I shine at noon, you can not look at me, because I am too bright.

When I am going to rise in the morning and begin the day, the birds fly into the sky to meet me, and cocks crow to tell everybody that I am coming.

It seems that I am a great traveler in the sky. I never stop, and I’m never tired. But, in fact, it is the earth that is traveling around me all the time.

1. The sun shines over the trees, the hills and so on(等等)because ________ .

A．it is day

B．it is bright

C．it is high

D．both B and C

2. How does the sun tell us to get up in the morning?

A．It shines.	B．It travels.
C．It shouts or rings.	D．It wakes up the cocks first.

3. We can’t see the sun when ________ .

A．we get up late	B．there is too much cloud
C．it is too bright in the sky	D．the birds do not fly into the sky to meet it

4. Which of the following is wrong?

A．The sun rises in the east and shines in the day when it is fine.

B．The sun is the highest star, higher than the highest mountains and clouds.

C．When it is fine, you can not look at the sun at noon because it is too bright.

D．In fact, the sun is a great traveler in the sky, it travels all day and all night.

5. The best title(标题)for the passage may be “________ ”.

A．The Sun

B．A Great Traveler

C．What Am I

D．What the Sun Say

10 . On August 12, 2018, NASA sent up the Parker Solar Probe (帕克太阳探测器) to explore the mysteries of the sun. It was named after Eugene Newman Parker, an American physicist who predicted important facts about solar activity and solar wind.

The Corona is much hotter than the surface of the sun. In order to get close to the sun, Parker is protected by a special material. This allows it to keep cool inside, even when the temperature around it is as high as 1,400℃.

In April 2021, on its eighth trip around the sun, Parker actually entered the sun’s corona. It flew through the corona about five hours. For the first time in history, a spacecraft (航天器) has “touched” the sun. Though this happened in April, it took scientists a few months to get the information back and then several more months to confirm the news.

Since then, the probe has got into the corona more times. As it circles closer to the sun’s surface, Parker is making new discoveries that other spacecraft were too far away to see. The discoveries will also help us know more about space weather which has a great influence on the earth as well as astronauts in space.

Parker will keep moving closer to the sun and diving deeper into the corona until we lose contact (联系) with it sometime around December 2025. It will give us plenty of chances of learning something new about our life-giving star.

根据材料内容选择最佳答案。
1. The probe got its name from ________.

A．a NASA engineer	B．a special material
C．an American physicist	D．an unsolved mystery

2. What’s the second paragraph mainly about?

A．What the probe will do.

B．What the probe is made of.

C．Why the probe can get so close to the sun.

D．Why the sun’s corona is hotter than its surface.

3. What does the underlined word “confirm” mean in Chinese?

A．发布

B．确认

C．执行

D．传播

4. Why does the probe try to “touch” the sun?

A．To get to the surface of the sun.

B．To protect the astronauts in space.

C．To collect more information about the sun.

D．To test the highest temperature it can stand.

5. What can we learn about the Parker Solar Probe?

A．It is the only spacecraft sent up to the sun.

B．It is the first spacecraft to get into the sun’s corona

C．It will come back to the earth at the end of 2025.

D．It flew around the sun five times before entering the corona.