AN ice ball shoots across the night sky, lighting up its path along the way, like a flying sun.
Ancient humans were afraid of the sight of comets(彗星). Many cultures believed that comets were messages sent by gods, and people thought these messages were warning signs for bad behavior. But today science and technology give us a better understanding of comets.
Last week, comet Ison ended its million-year-long journey as it flew straight toward the sun, melting most of the comet. It was hoped that comet Ison would survive this trip around the sun. Because once it got near Earth, it would have produced a great show of lights for us.
In ancient times, the coming of comet Ison might have scared people. However, now we can track a comet’s journey in our solar system. We can also study what they’re made of. There is even a project to launch a spacecraft onto a comet to study them further.
Although from the sky they look like great giant fireballs, comets are a collection of gas, ice, dust and small rocks. As a comet goes into our solar system, the sun’s solar winds blow some of the dust and gas away, giving the comet a tail. The average size of comets is about 10 kilometers in diameter(直径). But amazingly, their tails can be 150 kilometers long! Comet Ison’s diameter was about 5 kilometers.
Today, people don’t fear comets as much as they did before. Western countries have even developed and old tradition. When people see a comet or meteoroid(流星) shooting across the sky, they call it a shooting star, People who get the chance to see one get to make a wish. It is a tradition that lives on today.
1.In ancient times, people thought comets were _____.
A.warning signs sent by gods
B. lucky signs for good behavior
C. great shows of lights
D. flying suns
2.We can tell from the third paragraph that comet Ison ___.
A.finished its long journey to Mars
B. survived its trip around the sun
C.has reached the Earth
D. was melted by the sun
3.When a comet travels near the sun, some of the __ will be blown away by the solar winds.
A.gas and dust B. ice and rocks
C. dust and rocks D. rocks and tail
4.According to the last paragraph, what tradition lives on today?
A.Being scared by comets and meteoroids.
B.Making a wish when seeing a shooting star
C.Launching spacecrafts onto comets to study them further.
D.Having a better understanding of comets
九年级英语阅读理解困难题
AN ice ball shoots across the night sky, lighting up its path along the way, like a flying sun.
Ancient humans were afraid of the sight of comets(彗星). Many cultures believed that comets were messages sent by gods, and people thought these messages were warning signs for bad behavior. But today science and technology give us a better understanding of comets.
Last week, comet Ison ended its million-year-long journey as it flew straight toward the sun, melting most of the comet. It was hoped that comet Ison would survive this trip around the sun. Because once it got near Earth, it would have produced a great show of lights for us.
In ancient times, the coming of comet Ison might have scared people. However, now we can track a comet’s journey in our solar system. We can also study what they’re made of. There is even a project to launch a spacecraft onto a comet to study them further.
Although from the sky they look like great giant fireballs, comets are a collection of gas, ice, dust and small rocks. As a comet goes into our solar system, the sun’s solar winds blow some of the dust and gas away, giving the comet a tail. The average size of comets is about 10 kilometers in diameter(直径). But amazingly, their tails can be 150 kilometers long! Comet Ison’s diameter was about 5 kilometers.
Today, people don’t fear comets as much as they did before. Western countries have even developed and old tradition. When people see a comet or meteoroid(流星) shooting across the sky, they call it a shooting star, People who get the chance to see one get to make a wish. It is a tradition that lives on today.
1.In ancient times, people thought comets were _____.
A.warning signs sent by gods
B. lucky signs for good behavior
C. great shows of lights
D. flying suns
2.We can tell from the third paragraph that comet Ison ___.
A.finished its long journey to Mars
B. survived its trip around the sun
C.has reached the Earth
D. was melted by the sun
3.When a comet travels near the sun, some of the __ will be blown away by the solar winds.
A.gas and dust B. ice and rocks
C. dust and rocks D. rocks and tail
4.According to the last paragraph, what tradition lives on today?
A.Being scared by comets and meteoroids.
B.Making a wish when seeing a shooting star
C.Launching spacecrafts onto comets to study them further.
D.Having a better understanding of comets
九年级英语阅读理解困难题查看答案及解析
How do you light up the night sky? The answer is by using electricity. ______ did you know that nature can glow (发光), too?
Scientists have found many glowing creatures (生物). Most of them live in the ocean. Some use their lights to talk to each other. Others use them to hunt, to mate (交配) or to protect _____. The vampire squid (幽灵蛸), for example, uses a cloud of light to scare _____.
Scientists around the world are looking at this kind of light for new _____. In 2013, the US company Gleaux said it has created the world’s first light-producing plant, the Daily Mail reported. It is a genetically-modified (转基因的) plant. It can glow like a firefly.
Alexander, the company’s founder (创始人), and other scientists hope that _____ the future, glowing plants could _____ lamps and glowing trees could line highways. Krichevsky also hopes the technology could be used in farming. Farmers could know when their crops need water or are ready to be _____ if they glow.
While Gleaux is working on glowing plants, the French company Glowee is trying to use glowing bacteria (细菌) to _____ up shop windows and street signs. It’s the same type of bacteria that cause a type of squid to light up. New Scientist Online reported.
“Our goal is to _____ the way we produce and use light,” said Glowee founder Sandra Rey. “We want to help ______ the 19 percent of electricity consumption (消耗量) that is used to produce light.”
1.A. And B. But C. Though
2.A. others B. me C. themselves
3.A. themselves B. friends C. enemies
4.A. ideas B. ways C. creatures
5.A. in B. on C. to
6.A. reduce B. increase C. replace
7.A. planted B. watered C. picked
8.A. put B. pull C. light
9.A. find B. learn C. change
10.A. increase B. reduce C. have
九年级英语完型填空困难题查看答案及解析
It was ______ cold winter night and the moon was shining brightly across ____ night sky.
A．不填；a B．a; the
C．the; a D．the; 不填
九年级英语单项填空中等难度题查看答案及解析
It was ______ cold winter night and the moon was shining brightly across ____ night sky.
A．不填；a B．a; the
C．the; a D．the; 不填
九年级英语单项填空中等难度题查看答案及解析
—Have you seen the light Show in the city center?
—Yes. It is really wonderful. It lights up the sky.
A.makes...high B.makes...bright C.makes...clean
九年级英语单选题中等难度题查看答案及解析
---What did the boy do just now?
---He ran______ the road to pick up his ball.
A across B through C by D for
九年级英语单项填空简单题查看答案及解析
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
One day an Australian farmer，Joe，saw a bright light in the sky. The light came nearer and nearer and suddenly Joe realized that it was a spaceship. The spaceship landed in a field nearby.
The door of the spaceship opened and two strange beings（怪物）climbed out. They seemed to be half man and half bird. Joe was afraid of them. He tried to run away. But the spacemen walked towards him，picked him up and carried him into the spaceship.They put wires（导线）from a machine onto his head and they they began to speak to him in English.
They asked him questions about earth.“We’ re from Venus（金星），”they said，“But it is getting very hot there. A lot of our people are dying and we have not much time left. We are trying to find a new home.”
After some time they freed Joe and at last the spaceship took off and disappeared. Joe told his friends about the spacemen，but no one believed his story.
“You wi ll believe me one day，”Joe told them.“The spacemen will come back again.”
根据短文内容，选择最佳答案。
1.What’s the bright light in the sky?
A. A bird B. A plane C. A rocket D. A spaceship
2.What are the strange beings like?
A. Men B. Birds
C. Neither men nor birds D. Half man and half bird
3.What did the strange beings want Joe to do?
A. Put wires from a machine onto his head
B. Speak to them in English
C. Answer some questions about the earth
D. Find a new home
4.Why did the aliens come to the earth?
A. To find a new home B. To speak to Joe
C. To destroy the earth D. To take Joe away
5.According to the passage，which sentence is RIGHT?
A. The aliens took away Joe
B. It is getting very cold on Venus
C. A lot of people on Venus are dying
D. Not all the people believed Joe
九年级英语阅读理解困难题查看答案及解析
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