1 . 阅读填空

Are we alone in space? Is the Earth the only planet that has life?     1     Now we may get one step closer to the answers.

On Feb. 22nd, NASA said they found seven Earth-like planets.     2     The planets go around a dwarf star（矮星）called Trappist-1. It is much smaller and cooler than our sun. They are about 39 light-years（光年）from the Earth.     3     But scientists say it’s a little close.

    4     If you lived on one of them, you could possibly see the clouds around the next planet. More importantly, three of the planets are at the perfect distance（距离）from the Sun.     5     If there is liquid water（液态水）, there could be life.

For scientists, the finding is not an end. Next, they will try to find out if the planets have atmospheres（大气层）.

A．It means there could be liquid water on them.

B．That seems too far away from us.

C．These are big questions in the science world.

D．The seven planets are very close to one another.

E．They all nearly have the same size as Earth.

2 . 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 Sun, 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 (表面) 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 a full _______. When you see the Sun shining _______, it’s 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

5 . We all live on Earth and enjoy our life every day. Do you know all the interesting facts about the Earth?

The Earth is not round.

Do you think the Earth is round? Will the Earth is not completely round.

The Earth is really old.

Grandmas and grandpas are old, but the Earth is much older. Scientists think that the earth is about 4.5 to 5 billion (十亿) years old.

Much of the Earth is water.

About 70% of Earth is water, and only about 30% of Earth is land.

Earthquakes happen all the time.

Earthquakes (地震) take place all the time. But most of the time, they are very small and human beings cannot even feel them.

________.

There are many mountains on Earth. Mount Everest is the most famous one because its peak is five and one-half miles above sea level. It is the highest. There are more interesting facts about the Earth. Can you tell us some?

1. How old is the Earth?

A．4 billion.

B．4.5 billion to 5 billion.

C．5 billion.

D．5 billion to 5.5 billion.

2. How many facts are mentioned (被提到) in the passage?

A．Three.

B．Four

C．Five.

D．Six.

3. Which sentence can be put in the blank (空格)?

A．Many mountains.

B．Mount Everest is very famous.

C．Mount Everest is five and one-half miles high.

D．Mount Everest is the highest mountain.

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

A．Facts about Earth	B．The earthquake
C．Life on Earth	D．Mountains on Earth

7 . We live on Earth. It’s our home. But how much do you know about it? Let me tell you something about our Earth. The Earth is like a huge ball. Like the other seven planets（行星）, the Earth is running around the sun. It’s the third nearest one to the sun. It takes the Earth about 365 days to run around the sun. At the same time, the Earth is going around itself. If you are in space, you can see lots of white clouds over the surface（表面）of the Earth. Through the clouds, you can see the blue colour of the oceans, and the brown colour of the land. About 70% of the Earth is covered with water. Why do we have day and night? When the half of the Earth is facing the sun, it’s daytime. As the Earth turns, and this half is away from the sun, night is coming. And it’s daytime for the other half.

1. How many planets are running around the sun?

A．Seven.

B．Eight.

C．Seventy.

D．Ten.

2. ______ of the Earth is covered with water.

A．50%

B．30%

C．About 70%

D．About 30%

3. Which of the following sentences is TRUE?

A．All the planets and stars are running around the sun.

B．The Earth is the nearest planet to the sun.

C．It takes the Earth about 365 days to run around the sun.

D．Only the Earth runs around the sun.

4. When ______, it’s daytime.

A．the Earth is running around the sun

B．the Earth is away from the sun

C．the half of the Earth is away from the sun

D．the half of the Earth is facing the sun

5. Where can you read this passage?

A．In storybooks.	B．In newspapers or magazines.
C．In cartoon books.	D．In fiction（科幻）stories.

8 . Mars (火星) is a planet (行星). It is the fourth planet from the sun and is more than 200,000,000 kilometers from it. That is a very long way. Mars is also a very long way away from Earth but sometimes you can see it clearly at night. Most stars are white. But Mars is a little red. It is a very big planet. It is about half the size of Earth. The planet Earth has one moon. Mars has two moons. They are called Phobos and Deimos.

Long ago, the only way to study Mars was just to look at it. People with good eyes could see some things but not everything. Later on, it was easier, because scientists had telescopes (望远镜). They could see Mars come clearly. They learnt much more about Mars this way. In the twentieth century (世纪) things got even better. First of all, we had spacecraft. They flew close to Mars and sent back information. Then, they sent spacecraft to fly around Mars. Finally, spacecraft landed (着陆) on Mars.

Maybe one day a man will walk on Mars.

根据短文内容完成以下任务。
1. 回答问题：How far is Mars from the sun? ___________________
2. 回答问题：What color is Mars? ____________________________
3. 完成句子：___________ and ____________ are the two moons of Mars.
4. 完成句子：The article mainly talks about ______.（限一个单词）
5. 请选出划线单词spacecraft 的汉语意思。________（填字母代号）

A．宇宙飞船

B．望远镜

C．潜艇

9 . China’s Chang’e 5 mission is the most recent successful lunar sample return mission. On Dec 17, the Chang’e 5 lunar probe（探测器）returned home along with 1.7 kg of lunar rocks and soil.

The main goal of Chang’e 5 was to bring things back. And China’s new samples stand for a fresh start for its lunar research and space exploration.

The samples were collected at Mons Rumker, also known as the Ocean of Storms. The site has never been sampled（取样）before. Samples that were taken by the US previously（以前）are all more than three billion years old, while the Chang’e 5 samples are less than two billion years old. Scientists are now able to study late-stage（后期）volcanic（火山的）activity on the moon. This activity shaped the younger parts of the rocky moon we see today, according to Long Xiao, a scientist at the China University of Geosciences.

The moon’s volcanic history is not the only mystery that Chang’e 5 is going to solve. The mission could also help scientists learn more about the history of the whole solar system（太阳系）. Scientists will check the amount of radioisotopes（同位素）in the samples to accurately（精确地）date（确定年代）them-the radioisotopes decay（衰减）over time.

Dating lunar samples will give us more accurate ages not only for the moon, but also for other planets in the solar system. These planets are often dated by comparing them to similarly aged areas of the moon.

1. What did China’s Chang’e 5 lunar probe bring back?

A．1.7 kg of lunar rocks and soil.	B．1.7 kg of lunar rocks.
C．1.7 kg of lunar soil.	D．1.7 kg of lunar water.

2. What do China’s new samples stand for?

A．A new start of space travel.	B．A great success.
C．A start for its lunar research and space exploration.	D．A victory of getting the new samples.

3. Where were the samples collected?

A．At the Mars.	B．At the Ocean of Storms.
C．Behind the Mons Rumker.	D．Behind the Ocean of Storms.

4. What are the mysteries that Chang’e 5 is going to solve?

A．The moon’s volcanic history.	B．The history of the whole solar system.
C．The history of the Earth.	D．The moon’s volcanic history and the history of the whole solar system.

5. The purpose of dating the lunar samples is to ________.

A．give us more accurate ages for the moon

B．give us more accurate ages for other planets in the solar system

C．give us more accurate ages both for the moon and for other planets

D．give us more accurate ages for the Earth