Comets(彗星) are parts of our solar system. Like the planets, they go around the sun.
But comets are not made of solid rocks like planets. A comet is a ball of dust, stones, and ice. Many people call comets dirty snowballs.
The “snowball” may be only a few miles across. But when the sun heats the “snowball,” much of it is changed to gases. The gases spread out and form the comet’s head, which may be thousands of miles across.
A comet moves fast in its trip around the sun. But when we see it, the comet does not seem to move. That’s because it is so far away. The moon moves fast, but when you look at it, you can’t see any motion(运动). That’s because the moon is far away.
Each year astronomers(天文学家) discover new comets. Some of them are seen only once. They make one trip around the sun and then go away out into space. The sun’s gravity cannot hold them.
Other comets, like Halley, keep returning. They have been captured by the sun. Halley’s earliest visit was probably 3,000 years ago. It may keep returning for another 3,000 years.
But every time a comet goes around the sun, the comet loses part of itself. Gases and dust are pulled out of the comet. That’s why Halley is now dimmer(暗淡的) than it used to be. Next time it visits us, in 2062, it may be even dimmer. Each visit it may get dimmer and dimmer, until it finally disappears.
1.What is this passage mostly about?
A.Comets and the sun. |
B.Why comets are like snowballs. |
C.Who discovered the first comet. |
D.Facts about comets. |
2.How does the writer help the reader understand what a comet looks like?
A.By telling about a famous one. |
B.By explaining how far away it is. |
C.By describing how fast it moves. |
D.By describing it as a dirty snowball. |
3.What is the most likely reason the writer wrote this passage?
A.To give information about comets. |
B.To tell readers about famous comets. |
C.To explain the importance of comets. |
D.To encourage readers to look for comets. |
九年级英语阅读理解困难题
Comets(彗星) are parts of our solar system. Like the planets, they go around the sun.
But comets are not made of solid rocks like planets. A comet is a ball of dust, stones, and ice. Many people call comets dirty snowballs.
The “snowball” may be only a few miles across. But when the sun heats the “snowball,” much of it is changed to gases. The gases spread out and form the comet’s head, which may be thousands of miles across.
A comet moves fast in its trip around the sun. But when we see it, the comet does not seem to move. That’s because it is so far away. The moon moves fast, but when you look at it, you can’t see any motion(运动). That’s because the moon is far away.
Each year astronomers(天文学家) discover new comets. Some of them are seen only once. They make one trip around the sun and then go away out into space. The sun’s gravity cannot hold them.
Other comets, like Halley, keep returning. They have been captured by the sun. Halley’s earliest visit was probably 3,000 years ago. It may keep returning for another 3,000 years.
But every time a comet goes around the sun, the comet loses part of itself. Gases and dust are pulled out of the comet. That’s why Halley is now dimmer(暗淡的) than it used to be. Next time it visits us, in 2062, it may be even dimmer. Each visit it may get dimmer and dimmer, until it finally disappears.
1.What is this passage mostly about?
A.Comets and the sun. |
B.Why comets are like snowballs. |
C.Who discovered the first comet. |
D.Facts about comets. |
2.How does the writer help the reader understand what a comet looks like?
A.By telling about a famous one. |
B.By explaining how far away it is. |
C.By describing how fast it moves. |
D.By describing it as a dirty snowball. |
3.What is the most likely reason the writer wrote this passage?
A.To give information about comets. |
B.To tell readers about famous comets. |
C.To explain the importance of comets. |
D.To encourage readers to look for comets. |
九年级英语阅读理解困难题查看答案及解析
The surface of Mars is like the surface of earth than planet in our solar system.
A. much; the other B. much; any other
C. more; the other D. more; any other
九年级英语单项填空中等难度题查看答案及解析
The surface of Mars is ______like the surface of Earth than_____ planet in our solar system (太阳系).
A. much; the other B. much; any other
C. more; the other D. more; any other
九年级英语单选题简单题查看答案及解析
根据短文内容,按要求答题(no more than 11 words)。
In the most southern part of our planet, there’s a place that’s covered with snow and ice all year round. But it has the clearest and cleanest air. Amazingly, in this place, the sun sometimes hangs even in the midnight sky. This place is Antarctica : the coldest, windiest and harshest (恶劣的)place on the Earth.
As the world’s least-known place, Antarctica is of great interest to scientists around the world. In 1983, China joined the Antarctic Treaty (《南极条约》). The treaty made Antarctica a peaceful place for member countries to do scientific research. During 30 years, China has sent many scientists to Antarctica. They mostly look at the resources under the icy land and do research about climate change and marine (海洋的)biology.
Antarctica is a place with fantastic views. However, life there is very hard. Food is one of the biggest problems. Frozen food which can be heated easily is people’s daily food. Fresh vegetables are hard to grow in the cold weather. Therefore, scientists often eat dried or canned vegetables.
Sleep is also troublesome. In Antarctica, summer lasts from November to March. During this period, Antarctica points to the sun and receives sunlight 24 hours a day. In order to get some sleep, scientists cover the windows with black plastic cloth to create “night”.
Working in Antarctica is dangerous, especially when meeting gale-force (七级以上的)winds. Sometimes the wind is even stronger than a typhoon. It can easily blow people away. So there are ropes that connect buildings of some research stations. People can hold these ropes to keep their balance in forceful winds.
What’s more, communicating with others is difficult. Without cables and Internet in some research stations, two-way radios are the only tools to communicate. If people want to say hello to friends and relatives, they can use satellite phones.
Although it is challenging to work in Antarctica, scientists’ passion(热情)to learn about this mysterious land will never end. It is hopeful that one day they will step every corner of this icy land.
1.What is Antarctica covered with all year round?
____________________________________________________________________________
2.Who has China sent to Antarctica to do research?
____________________________________________________________________________
3.Why do people often eat dried or canned vegetables in Antarctica?
___________________________________________________________________________
4.How can people keep their balance in forceful winds?
___________________________________________________________________________
5.How long does summer last in Antarctica?
__________________________________________________________________________
九年级英语回答问题中等难度题查看答案及解析
In the most southern part of our planet, there's a place that's covered with snow and ice all year round. But it has the clearest and cleanest air. Amazingly, in this place, the sun sometimes hangs even in the midnight sky. This place is Antarctica (南极洲): the coldest, windiest and harshest (恶劣的) place on the Earth.
As the world's least-known place, Antarctica is of great interest to scientists around the world. During 30 years, China has sent many scientists to Antarctica. They mostly look for the resources under the icy land and do research about climate change and marine (海洋的) biology.
Antarctica is a place with fantastic views. However, life there is very hard. Food is one of the biggest problems. Frozen food which can be heated easily is people's daily food. Fresh vegetables are hard to grow in the cold weather.
Sleep is also difficult. In Antarctica, summer lasts from November to March. During this period, Antarctica points to the sun and receives sunlight 24 hours a day. In order to get some sleep, scientists cover the windows with black plastic cloth to create "night".
Working in Antarctica is dangerous, especially when meeting gale-force (七级以上的) winds. They can easily blow people away. So there are ropes that connect buildings of some research stations. People can hold these ropes to keep their balance in forceful winds.
What's more, communicating with others is difficult. Without cables and Internet in some research stations, two-way radios are the only tools to communicate. If people want to say hello to friends and relatives, they can use satellite phones.
Although it is challenging to work in Antarctica, scientists' passion to learn about this mysterious land will never end. It is hopeful that one day they will step every corner of this icy land.
1. From the passage, we learn that Antarctica_______.
A. is covered with water
B. rains heavily from time to time
C. has little wind most of the time
D. has sunshine during every night for 5 months
2.Scientists from China go to Antarctica to _______.
A. find out ways to control water pollution
B. research climate change and marine biology
C. grow plants and vegetables in special condition
D. stop the hunters from killing the marine life
3.In order to sleep well in Antarctica, the scientists have to __________.
A. wear more clothes to keep warm
B. cover the windows with black plastic cloth
C. connect research stations with ropes
D. eat more fried and canned vegetables
4.We can replace (替换) the underlined word ‘passion’ in the last paragraph with _____.
A. strong love
B. full preparation
C. pleasant introduction
D. amazing imagination
5.The passage is mainly about__________.
A. views of Antarctica
B. exploring(探索) Antarctica
C. how to survive in Antarctica
D. climate changes of Antarctica
九年级英语阅读理解中等难度题查看答案及解析
In the most southern part of our planet, there's a place that's covered with snow and ice all year round. But it has the clearest and cleanest air. Amazingly, in this place, the sun sometimes hangs even in the midnight sky. This place is Antarctica (南极洲): the coldest, windiest and harshest (恶劣的) place on the Earth.
As the world's least-known place, Antarctica is of great interest to scientists around the world. During 30 years, China has sent many scientists to Antarctica. They mostly look at the resources under the icy land and do research about climate change and marine (海洋的) biology.
Antarctica is a place with fantastic views. However, life there is very hard. Food is one of the biggest problems. Frozen food which can be heated easily is people's daily food. Fresh vegetables are hard to grow in the cold weather.
Sleep is also difficult. In Antarctica, summer lasts from November to March. During this period, Antarctica points to the sun and receives sunlight 24 hours a day. In order to get some sleep, scientists cover the windows with black plastic cloth to create "night".
Working in Antarctica is dangerous, especially when meeting gale-force (七级以上的) winds. They can easily blow people away. So there are ropes that connect buildings of some research stations. People can hold these ropes to keep their balance in forceful winds.
What's morel communicating with others is difficult. Without cables and Internet in some research stations. two-way radios are the only tools to communicate. If people want to say hello to friends and relatives, they can use satellite phones.
Although it is challenging to work in Antarctica, scientists' passion to learn about this mysterious land will never end. It is hopeful that one day they will step every corner of this icy land.
1.From Paragraph 1, we learn that Antarctica_______.
A. is covered with snow and ice B. rains heavily from time to time
C. has little wind most of the time D. has sunshine during every night
2.Scientists from China go to Antarctica to _______.
A. find out ways to control water pollution B. research climate change and marine biology
C. grow plants and vegetables in special condition D. stop the hunters from killing the marine life
3.In order to sleep well in Antarctica, the scientists have to _______.
A. wear more clothes to keep warm B. cover the windows with black cloth
C. connect research stations with ropes D. eat more fried and canned vegetables
4.We can replace (替换) the underlined word "passion" in the last paragraph with _____.
A. strong love B. full preparation
C. pleasant introduction D. amazing imagination
九年级英语阅读单选中等难度题查看答案及解析
In the most southern part of our planet, there’s a place that’s covered with snow and ice all year round. But it has the clearest and cleanest air. Amazingly, in this place, the sun sometimes hangs even in the midnight sky. This place is Antarctica (南极洲): the coldest, windiest and harshest (恶劣的) place on the Earth.
As the world’s least-known place, Antarctica is of great interest to scientists around the world. In 1983, China joined the Antarctic Treaty (《南极条约》). The treaty made Antarctica a peaceful place for member countries to do scientific research. During 30 years, China has sent many scientists to Antarctica. They mostly look at the resources under the icy land and do research about climate change and marine (海洋的) biology.
Antarctica is a place with fantastic views. However, life there is very hard. Food is one of the biggest problems. Frozen (速冻) food which can be heated easily is people’s daily food. Fresh vegetables are hard to grow in the cold weather. Therefore, scientists often eat dried or canned vegetables.
Sleep is also troublesome. In Antarctica, summer lasts from November to March. During this period, Antarctica points to the sun and receives sunlight 24 hours a day. In order to get some sleep, scientists cover the windows with black plastic cloth to create “night”.
Working in Antarctica is dangerous, especially when meeting gale-force (七级以上的) winds. Sometimes the wind is even stronger than a typhoon. It can easily blow people away. So there are ropes that connect buildings of some research stations. People can hold these ropes to keep their balance in forceful winds.
What’s more, communicating with others is difficult. Without cables and Internet in some research stations, two-way radios are the only tools to communicate. If people want to say hello to friends and relatives, they can use satellite phones.
Although it is challenging to work in Antarctica, scientists’ passion to learn about this mysterious land will never end. It is hopeful that one day they will step every corner of this icy land.
1.From Paragraph 1, we learn that the Antarctica ______.
A. is covered with snow and ice
B. rains heavily from time to time
C. has little wind most of the time
D. has sunshine during every night
2.Scientists from China go to Antarctica to _____.
A. find out ways to control water pollution
B. research climate change and marine biology
C. grow plants and vegetables in special condition
D. stop the hunters from killing the marine biology
3.In order to sleep well in Antarctica, the scientists have to _____.
A. wear more clothes to keep warm
B. cover the windows with black cloth
C. connect research stations with ropes
D. eat more fried and canned vegetables
4.We can replace (替换) the underlined word passion in the last paragraph with .
A. strong love
B. full preparation
C. pleasant introduction
D. amazing imagination
5.The passage is mainly about .
A. view of the Antarctica
B. exploring the Antarctica
C. how to survive in the Antarctica
D. climate changes of the Antarctica
九年级英语阅读理解困难题查看答案及解析
In the most southern part of our planet, there’s a place that’s covered with snow and ice all year round. But it has the clearest and cleanest air. Amazingly, in this place, the sun sometimes hangs even in the midnight sky. This place is Antarctica (南极洲): the coldest, windiest and harshest (恶劣的) place on the Earth.
As the world’s least-known place, Antarctica is of great interest to scientists around the world. In 1983, China joined the Antarctic Treaty (《南极条约》). The treaty made Antarctica a peaceful place for member countries to do scientific research. During 30 years, China has sent many scientists to Antarctica. They mostly look at the resources under the icy land and do research about climate change and marine (海洋的) biology.
Antarctica is a place with fantastic views. However, life there is very hard. Food is one of the biggest problems. Frozen food which can be heated easily is people’s daily food. Fresh vegetables are hard to grow in the cold weather. Therefore, scientists often eat dried or canned vegetables.
Sleep is also troublesome. In Antarctica, summer lasts from November to March. During this period, Antarctica points to the sun and receives sunlight 24 hours a day. In order to get some sleep, scientists cover the windows with black plastic cloth to create “night”.
Working in Antarctica is dangerous, especially when meeting gale-force(七级以上的)winds.Sometimes the wind is even stronger than a typhoon.It can easily blow people away.So there are ropes that connect buildings of some research stations.People can hold these ropes to keep their balance in forceful winds.
What’s more, communicating with others is difficult. Without cables and Internet in some research stations, two-way radios are the only tools to communicate. If people want to say hello to friends and relatives, they can use satellite phones.
Although it is challenging(挑战) to work in Antarctica, scientists’ passion to learn about this mysterious land will never end. It is hopeful that one day they will step every corner of this icy land.
1.Scientists from China go to Antarctica to _____.
A. find out ways to control water pollution
B. research climate change and marine biology
C. grow plants and vegetables in special condition
D. stop the hunters from killing the marine biology
2.In order to sleep well in Antarctica, the scientists have to _____.
A. wear more clothes to keep warm B. cover the windows with black cloth
C. connect research stations with ropes D. eat more fried and canned vegetables
3. We can replace (替换) the underlined word passion in the last paragraph with .
A. strong love B. full preparation
C. pleasant introduction D. amazing imagination
4.The passage is mainly about .
A. view of the Antarctica
B. exploring the Antarctica
C. how to survive in the Antarctica
D. climate changes of the Antarctica
九年级英语阅读理解中等难度题查看答案及解析
Do you expect1.(know) more about the space? 2.would you like to learn about most? The solar system? Our earth? Then join our school’s new Space Club.
At our first meeting we are going to learn about3.moon and the planets. So far, we4.(learn) something about them in our science lessons, but at the Space Club we are going to find a lot5.(much). We know that scientists have recently made new discoveries about several of the planets. Our teacher told us6.he had invited a famous person to come and talk to us about the latest space news.
Our first meeting will be in the Science Lab on the first floor of the Science Building. The meeting is on Thursday7.5:00 pm to 6:30 pm. First, Mr. Lu will tell us about the different things that we are going to do at the club, and8.at 5:30 pm , the talk will begin. There will be time for you9.(ask) questions.10. exciting the news is!
九年级英语语法填空中等难度题查看答案及解析
Everyone knows that _____ sun is in the center of the solar system(太阳系)
A.a B.an C.the D./
九年级英语单项填空中等难度题查看答案及解析