When you look up into the sky at night, have ...

When you look up into the sky at night, have you ever felt that your eyes are playing tricks on (捉弄) you? It seems that the stars are moving all the time.

Actually, there is nothing wrong with your eyes. This twinkling effect is called scintillation (交光). Scintillation happens because of air movements in the earth’s atmosphere (大气). Light is “bent (弯曲的)” when it travels through different parts of the earth’s atmosphere. As the air in the earth’s atmosphere is moving all the time, the light from the stars looks as if it is moving too.

The same thing also happens to things on the ground. On a very hot and shiny day, if you look at the road, the image in the distance is not clear and things move slightly. You can also see the same effect if you drop a rock into water. The rock appears a little unclear under the moving water.

This twinkling effect causes a lot of problems for astronomers (天文学家) since they cannot observe the stars clearly. A telescope (望远镜) was sent into space so that the air movements in the atmosphere could be avoided (避免). It took a long time to build the space telescope but finally in 1990, a huge space telescope called the Hubble Space Telescope was successfully sent into space. Since then, astronomers have many important observations that have helped people understand space better.

根据短文内容，选择最佳选项。 （10分）

1.What happens to the light from the stars we see when the air in the earth’s atmosphere is moving?

A．It looks even brighter.

B．It looks as if it is bent.

C．It looks as if it is moving.

D．It looks like drops of rain.

2.Scintillation also happens on 　　　 according to the passage.

A．rainy days                             B．shiny days

C．cloudy days                            D．windy days

3.What can you see when you drop a rock into the water?

A．The rock gets broken.

B．The rock becomes unclear.

C．The water becomes much polluted.

D．The water does not move anymore.

4.The underlined word “observe” means “　　　”.

A．watch            B．listen             C．draw             D．explain

5.Why is scintillation a problem for astronomers?

A．The stars never stay still.

B．It makes the stars too dark to see.

C．It makes astronomers feel too hot to work.

D．Astronomers cannot observe the stars clearly.

九年级英语阅读理解困难题查看答案及解析

In the sunny night, look up at the clear night sky. You can probably see thousands of stars. The biggest thing you’ll see, of course, is the moon. For thousands of years, people have wondered about this big thing in the sky.

Earth’s moon is a satellite. A satellite is a body that orbits(环绕轨道运行)a planet. All moons are satellites, and many planets have them. Some have many moons. Earth, of course, only has one. It’s a special moon, though. It’s the fifth largest moon in the solar system!

In fact, the moon is much smaller than the sun. But it’s much closer to Earth, so it looks as big as the sun. The moon is so close that you can see its dark and light spots(斑点)without a telescope. Men flew and landed on the moon’s surface many times by spacecrafts in the 1960s and 1970s. Neil Armstrong was the first human to step on the moon. He walked on the moon on July 20th, 1969. The flights to the moon have helped us learn much about it. Astronauts even brought rocks home with them!

There’s still a lot to learn about the moon. Now people still can’t live on the moon because it does not have oxygen or water like the Earth. But I’m sure that humans can live there one day in the future.

根据短文内容，选择最佳答案。

1.What is a satellite?

A. A planet.

B. A spacecraft.

C. A body that orbits a planet.

D. A black star.

2. How many moons does the Earth have?

A. One.　　　　　　 B. Four.

C. Three.　　　　 　 D. Two.

3.Why does the moon look as big as the sun?

A. Because it’s much closer to the Earth.

B. Because it comes out at night.

C. Because it is the fifth largest moon in the solar system.

D. Because people can’t see it without a telescope.

4.Who was the first human to walk on the moon?

A. Lance Armstrong.　　 B. Neil Armstrong.

C. Wally Schirra.　　　　 D. Neil Diamond.

九年级英语阅读理解中等难度题查看答案及解析

In the sunny night, look up at the clear night sky. You can probably see thousands of stars. The biggest thing you’ll see, of course, is the moon. For thousands of years, people have wondered about this big thing in the sky.

Earth’s moon is a satellite. A satellite is a body that orbits(环绕轨道运行)a planet. All moons are satellites, and many planets have them. Some have many moons. Earth, of course, only has one. It’s a special moon, though. It’s the fifth largest moon in the solar system!

In fact, the moon is much smaller than the sun. But it’s much closer to Earth, so it looks as big as the sun. The moon is so close that you can see its dark and light spots(斑点)without a telescope. Men flew and landed on the moon’s surface many times by spacecrafts in the 1960s and 1970s. Neil Armstrong was the first human to step on the moon. He walked on the moon on July 20th, 1969. The flights to the moon have helped us learn much about it. Astronauts even brought rocks home with them!

There’s still a lot to learn about the moon. Now people still can’t live on the moon because it does not have oxygen or water like the Earth. But I’m sure that humans can live there one day in the future.

根据短文内容，选择最佳答案。

1. What is a satellite?

A. A planet.

B. A spacecraft.

C. A body that orbits a planet.

D. A black star.

2. How many moons does the Earth have?

A. One.　　　　　 　 B. Four.

C. Three.　　　　　　 D. Two.

3.Why does the moon look as big as the sun?

A. Because it’s much closer to the Earth.

B. Because it comes out at night.

C. Because it is the fifth largest moon in the solar system.

D. Because people can’t see it without a telescope.

4. Who was the first human to walk on the moon?

A. Lance Armstrong.　　　 B. Neil Armstrong.

C. Wally Schirra.　　　　 D. Neil Diamond.

5.What is this article mainly about?

A. The stars.　　　　 B. The moon.

C. The sun.　　　　　 D. The earth.

九年级英语阅读理解中等难度题查看答案及解析

Look up and you can see 　　　　　　　　　　 stars in the sky at night.

A.million B.three millions C.million of D.millions of

九年级英语单选题中等难度题查看答案及解析

If you look at the sky one night and see something moving and shining that you have never seen before, it might be a comet (彗星).

　A comet sometimes looks like a star. Like a planet, a comet has no light of its own. It shines from the sunlight it reflects (反射). Like the earth, a comet goes round the sun, but on a much longer path (轨道) than the earth travels.

If a comet isn’t a star, what is it then?

Some scientists think that a large part of a comet is water frozen into pieces of ice and mixed with iron and rock dust and perhaps a few big pieces of rock. When sunshine melts (融化) the ice in the comet, great clouds of gas go trailing after it. These clouds, together with the dust, form a long tail.Many people perhaps have seen a comet. However no one knows how many comets there are. There may be millions of comets, but only a few come close enough for us to see.

　An Englishman named Edmund Halley, who lived from 1656 to 1742, found out a lot about the paths that comets take through the sky. Some comets move out of our sight and never come back. Others keep coming back at regular times. A big comet that keeps coming back was named after Halley because he was the one who worked out when it would come back again. Maybe you have ever seen Halley’s Comets because the last time it came close to the sun and the earth was in the year 1986. Then people all over the world were outside at night to look at it. You will probably be able to see Halley’s Comets when it comes near the earth again.

1.A comet is like ________.

A. sun      B. moon     C. sunlight    D. the earth

2.A large part of a comet is ______.

A. water and rock

B. water frozen into pieces of ice and mixed with iron

C. ice, iron and rock dust

D. only a few big pieces of rock

3.Maybe many people _______.

A. haven’t seen any comets      B. have seen all comets

C. have seen a comet at daytime  D. have seen a comet

4.Some comets keep coming back ________.

A. at any time  B. at noon  C. at regular times  D. at daytime

5.Halley’s Comets came back _____.

A. in 1990    B. in 1980     C. in 1986      D. in 1989

九年级英语阅读理解中等难度题查看答案及解析

If you look at the sky one night and see something moving and shining that you have never seen before, it might be a comet （彗星）．

A comet sometimes looks like a star．Like a planet, a comet has no light of its own．It shines from the sunlight it reflects （反射）．Like the earth, a comet goes round the sun, but on a much longer path （轨道） than the earth travels．

If a comet isn’t a star, what is it then?

Some scientists think that a large part of a comet is water frozen into pieces of ice and mixed with iron and rock dust and perhaps a few big pieces of rock．When sunshine melts （融化） the ice in the comet, great clouds of gas go trailing after it．These clouds, together with the dust, form a long tail．

Many people perhaps have seen a comet．However no one knows how many comets there are．There may be millions of comets, but only a few come close enough for us to see．

An Englishman named Edmund Halley, who lived from 1656 to 1742, found out a lot about the paths that comets take through the sky．Some comets move out of our sight and never come back．Others keep coming back at regular times．A big comet that keeps coming back was named after Halley because he was the one who worked out when it would come back again．Maybe you have ever seen Halley’s Comets because the last time it came close to the sun and the earth was in the year 1986．Then people all over the world were outside at night to look at it．You will probably be able to see Halley’s Comets when it comes near the earth again．

1.A comet is like ________．

A．sun　 B．moon　 C．sunlight　 D．the earth

2.A large part of a comet is ______．

A．water and rock

B．water frozen into pieces of ice and mixed with iron

C．ice, iron and rock dust

D．only a few big pieces of rock

3.Maybe many people _______．

A．haven’t seen any comets　　　　 B．have seen all comets

C．have seen a comet at daytime　　 D．have seen a comet

4.Some comets keep coming back ________．

A．at any time　 B．at noon

C．at regular times　 D．at daytime

5.Halley’s Comets came back _____．

A．in 1990　 B．in 1980　 C．in 1986　 D．in 1989

九年级英语阅读理解中等难度题查看答案及解析

If you look at the sky one night and see something moving and shining that you have never seen before, it might be a comet (彗星).

A comet sometimes looks like a star. Like a planet, a comet has no light of its own. It shines from the sunlight it reflects (反射). Like the earth a comet goes around the sun, but on a much longer path than the earth travels.

If a comet isn’t a star, what is it then?

Some scientists think that a large part of a comet is water frozen (冻) into pieces of ice and mixed with iron and rock dust and perhaps a few big pieces of rock. When sunshine melts (融化) the ice in the comet, great clouds of gas go trailing after it. These clouds, together with the dust, form a long tail.

Many people have seen a comet. However, no one knows how many comets there are. There may be millions of comets, but only a few come close enough for us to see.

An Englishman named Edmund Halley, who lived from 1656 to 1742, found out a lot about the paths that comets take through the sky. Some comets move out of our sight and never come back. Others keep coming back at regular times. A big comet that keeps coming back was named after Halley comet, because the last time it came close to the sun and the earth was in the year 1986. Then people all over the world were outside at night to look at it. You will probably be able to see Halley’s comet when it comes near the earth again.

根据短文内容，从题中所给的A、B、C、D四个选项中，选择最佳答案。

1.A comet is like.

A. the sun 　　 B. the moon

C. sunlight　　 D. the earth

2.A large part of a comet is.

A. water and rock　　

B. water frozen into pieces of ice and mixed with iron and rock dust and perhaps a few pieces of rock

C. ice, iron and rock dust　

D. only a few big pieces of rock

3.Many people.

A. haven’t seen any comets

B. have seen all comets

C. have seen a comet at daytime　

D. have seen a comet

4.Some comets keep coming back.

A.at any time

B.at noon

C.at regular times　

D.at daybreak (拂晓)

5.When did Halley’s comet come close to the sun and the earth last time?

A. In 1656. 　　 B. In 1742.

C. In 1986.　　 D. In 1996.

九年级英语阅读理解中等难度题查看答案及解析

Have you ever seen a person in the Moon? If you look closely at the Moon on some nights, you can see the face of a man in the Moon. Some people say that they can see an old man carrying sticks. Others see a girl reading a book. These pictures are made by the mountains and plains of the Moon.

Long ago people in England used to tell their children that the Moon was made of green cheese. Everyone knows that this is not true. The Moon is a large round rock. There is nothing on it. There are no trees or plants on the Moon. There are no rivers or seas. There are no living things. There is no air. It never rains on the Moon and everything is covered with dry, white dust. Not even a sound can be heard on the Moon.

The Moon is very hot when the Sun shines on it. But in the shade (背阴处) it is as cold as ice.

The Moon is much smaller than the Earth. It does not weigh as much as the Earth. If you went to the Moon, you would weigh six times less than you do now. Even a fat man would be able to jump high off the ground.

1.On some nights the Moon looks like______ .

A. an old man reading a book　　 B. a star

C. mountains and plains　　 D. the face of a man

2.The Moon is made of______ .

A. rivers and seas　　 B. rock

C. dirt　　 D. trees and plants

3.You can’t hear anything on the Moon because______ .

A. there are no living things on the Moon　　 B. it never rains on the Moon

C. the Moon is a large round rock　　 D. there is no air on the Moon

4.The Moon is______ .

A. very hot

B. very cold

C. sometimes very hot and sometimes very cold

D. covered with ice

5.On the Moon you could jump high in the air because______.

A. you would feel very happy

B. the Moon is very hot

C. the Moon is as cold as ice

D. you weigh six times less than on the Earth

九年级英语阅读理解中等难度题查看答案及解析

Have you ever seen a person in the Moon? If you look closely at the Moon on some nights, you can see the face of a man in the Moon. Some people say that they can see an old man carrying sticks. Others see a girl reading a book. These pictures are made by the mountains and plains of the Moon.

Long ago people in England used to tell their children that the Moon was made of green cheese. Everyone knows that this is not true. The Moon is a large round rock. There is nothing on it. There are no trees or plants on the Moon. There are no rivers or seas. There are no living things. There is no air. It never rains on the Moon and everything is covered with dry, white dust. Not even a sound can be heard on the Moon.

The Moon is very hot when the Sun shines on it. But in the shade (背阴处) it is as cold as ice.

The Moon is much smaller than the Earth. It does not weigh as much as the Earth. If you went to the Moon, you would weigh six times less than you do now. Even a fat man would be able to jump high off the ground.

1.On some nights the Moon looks like______ .

A. an old man reading a book　　 B. a star

C. mountains and plains　　 D. the face of a man

2.The Moon is made of______ .

A. rivers and seas　　 B. rock

C. dirt　　 D. trees and plants

3.You can’t hear anything on the Moon because______ .

A. there are no living things on the Moon　　 B. it never rains on the Moon

C. the Moon is a large round rock　　 D. there is no air on the Moon

4.The Moon is______ .

A. very hot

B. very cold

C. sometimes very hot and sometimes very cold

D. covered with ice

5.On the Moon you could jump high in the air because______.

A. you would feel very happy

B. the Moon is very hot

C. the Moon is as cold as ice

D. you weigh six times less than on the Earth

九年级英语阅读单选中等难度题查看答案及解析

Have a Date with Us!

Have you ever flown a sky lantern at night with lots of people? We plan to set an interesting world record - the most sky lanterns flying in the night sky! Are you interested in our activity? If you are, please join us!

Date: Friday, June 1st, 2018

Time: 9: 00 p. m.

Place: Youth Square on Jungbin Road

Price： ¥ 20 per person

¥ 16 per person with a student card

¥ 12 per pc non for groups of over 25 people

Notice: •You do not need to bring anything. We will prepare sky lanterns for you all. And what's better, we will give away a T-shirt with a picture of sky lanterns on it to the first 50 people who arrive. What are you waiting for?

•For more information，please visit www.2O18 skylanterns.com.cn.

Judy and her three classmates want to join ''Have a Date with Us! Here is their chat history about this activity on QQ.

1.“Have a Date with Us!" will be held　　　　　　 .

A. at night B. in a park C. on the Internet D. for students only

2.The T-shirt mentioned in the material looks like 　　　　　　 .

A.  B.  C.  D.

3.“Have a Date with Us!” is destined to ______.

A. set an interesting world record

B. raise money by selling sky lanterns

C. encourage students Io give away their T-shirts

D. invite young couples to have a date at the same time

4.From the chat history, we know______.

A. Judy asks her friends to take student cards.

B. Cindy will bring her own sky lanterns.

C. Debby has got a free t-shirt

D. Nick is sure to be late

5.If Cindy forgets her student card, the four students will have to pay ______ for the activity

A. ¥80 B. ¥68 C. ¥64 D. ¥4S

九年级英语阅读单选中等难度题查看答案及解析