A recent survey of 2000 parents in Britain showed that they are often afraid of science questions asked by their curious children only because they have no idea what the answer is. Here is a list of some simple questions that you can ask your parents to see if they know the answers.
Q: Why is the sky blue?
A: You probably know white sunlight is made up of seven colors. While it moves in a straight line when going through space, it starts to divide as it hits “raised area” in the atmosphere. The ones with longest wavelengths pass through easily. The blue , however , can be taken in by the gas molecules (分子) because it has a shorter wavelength , which in turn scatters (使分散) it in different directions. That’s why when you look up at the sky, it appears to be blue.
Q: Why does the moon sometimes appear during the daytime?
A: The simple answer to that is because just like any other object it is being lit (照亮) by the sun. As long as it is around 45 degrees or even 90 degrees off the sun, it will receive light and be able to be seen. The only time it is not able to be seen during its 28-day orbit (轨道) around the earth is when it is right between the earth and the sun. That’s because its back , which is not lit by the sun, is facing us.
Q: Where do birds/ honeybees go in winter?
A: While the bird part is quite easy, since a lot of them get together and travel, the honeybee part is likely to puzzle your parents. It turns out that these busy insects stop being that active when the temperature drops below 50°F. Instead ,they get together in the lower central area of the hive(蜂巢)and form a ball around their queen. This helps keep both warm enough to survive the cold winter months.
1.The sky looks blue mainly because the color blue in the sunlight_______.
A. has the longest wavelength among all the colors
B. cannot be taken in by the gas molecules
C. doesn’t hit “raised area” in the atmosphere
D. cannot pass through space successfully
2.How long can’t the moon be seen during the daytime in a month?
A. 2. B. 28. C.30. D. 31.
3.What do honeybees choose to do when the temperature drops below 50°F?
A. They choose to be active in the wild.
B. They choose to keep themselves warm.
C. They choose to travel to a warm place.
D. They choose to get together in the upper central area of the hive.
4.What is NOT explained in the passage?
A. Why is the sky blue?
B. Why is the moon able to be seen during the daytime?
C. Why do birds travel in winter?
D. Where do honeybees go in winter?
九年级英语阅读理解中等难度题
A recent survey of 2000 parents in Britain showed that they are often afraid of science questions asked by their curious children only because they have no idea what the answer is. Here is a list of some simple questions that you can ask your parents to see if they know the answers.
Q: Why is the sky blue?
A: You probably know white sunlight is made up of seven colors. While it moves in a straight line when going through space, it starts to divide as it hits “raised area” in the atmosphere. The ones with longest wavelengths pass through easily. The blue , however , can be taken in by the gas molecules (分子) because it has a shorter wavelength , which in turn scatters (使分散) it in different directions. That’s why when you look up at the sky, it appears to be blue.
Q: Why does the moon sometimes appear during the daytime?
A: The simple answer to that is because just like any other object it is being lit (照亮) by the sun. As long as it is around 45 degrees or even 90 degrees off the sun, it will receive light and be able to be seen. The only time it is not able to be seen during its 28-day orbit (轨道) around the earth is when it is right between the earth and the sun. That’s because its back , which is not lit by the sun, is facing us.
Q: Where do birds/ honeybees go in winter?
A: While the bird part is quite easy, since a lot of them get together and travel, the honeybee part is likely to puzzle your parents. It turns out that these busy insects stop being that active when the temperature drops below 50°F. Instead ,they get together in the lower central area of the hive(蜂巢)and form a ball around their queen. This helps keep both warm enough to survive the cold winter months.
1.The sky looks blue mainly because the color blue in the sunlight_______.
A. has the longest wavelength among all the colors
B. cannot be taken in by the gas molecules
C. doesn’t hit “raised area” in the atmosphere
D. cannot pass through space successfully
2.How long can’t the moon be seen during the daytime in a month?
A. 2. B. 28. C.30. D. 31.
3.What do honeybees choose to do when the temperature drops below 50°F?
A. They choose to be active in the wild.
B. They choose to keep themselves warm.
C. They choose to travel to a warm place.
D.They choose to get together in the upper central area of the hive.
4.What is NOT explained in the passage?
A. Why is the sky blue?
B. Why is the moon able to be seen during the daytime?
C. Why do birds travel in winter?
D. Where do honeybees go in winter?
九年级英语阅读理解中等难度题查看答案及解析
A recent survey of 2000 parents in Britain showed that they are often afraid of science questions asked by their curious children only because they have no idea what the answer is. Here is a list of some simple questions that you can ask your parents to see if they know the answers.
Q: Why is the sky blue?
A: You probably know white sunlight is made up of seven colors. While it moves in a straight line when going through space, it starts to divide as it hits “raised area” in the atmosphere. The ones with longest wavelengths pass through easily. The blue , however , can be taken in by the gas molecules (分子) because it has a shorter wavelength , which in turn scatters (使分散) it in different directions. That’s why when you look up at the sky, it appears to be blue.
Q: Why does the moon sometimes appear during the daytime?
A: The simple answer to that is because just like any other object it is being lit (照亮) by the sun. As long as it is around 45 degrees or even 90 degrees off the sun, it will receive light and be able to be seen. The only time it is not able to be seen during its 28-day orbit (轨道) around the earth is when it is right between the earth and the sun. That’s because its back , which is not lit by the sun, is facing us.
Q: Where do birds/ honeybees go in winter?
A: While the bird part is quite easy, since a lot of them get together and travel, the honeybee part is likely to puzzle your parents. It turns out that these busy insects stop being that active when the temperature drops below 50°F. Instead ,they get together in the lower central area of the hive(蜂巢)and form a ball around their queen. This helps keep both warm enough to survive the cold winter months.
1.The sky looks blue mainly because the color blue in the sunlight_______.
A. has the longest wavelength among all the colors
B. cannot be taken in by the gas molecules
C. doesn’t hit “raised area” in the atmosphere
D. cannot pass through space successfully
2.How long can’t the moon be seen during the daytime in a month?
A. 2. B. 28. C.30. D. 31.
3.What do honeybees choose to do when the temperature drops below 50°F?
A. They choose to be active in the wild.
B. They choose to keep themselves warm.
C. They choose to travel to a warm place.
D. They choose to get together in the upper central area of the hive.
4.What is NOT explained in the passage?
A. Why is the sky blue?
B. Why is the moon able to be seen during the daytime?
C. Why do birds travel in winter?
D. Where do honeybees go in winter?
九年级英语阅读理解中等难度题查看答案及解析
A recent survey of 2000 parents in Britain showed that they are often afraid of science questions asked by their curious children only because they have no idea what the answer is. Here is a list of some simple questions that you can ask your parents to see if they know the answers.
Q: Why is the sky blue?
A: You probably know white sunlight is made up of seven colors. While it moves in a straight line when going through space, it starts to divide as it hits “raised area” in the atmosphere. The ones with longest wavelengths pass through easily. The blue , however , can be taken in by the gas molecules (分子) because it has a shorter wavelength , which in turn scatters (使分散) it in different directions. That’s why when you look up at the sky, it appears to be blue.
Q:Why does the moon sometimes appear during the daytime?
A: The simple answer to that is because just like any other object it is being lit by the sun. As long as it is around 45 degrees or even 90 degrees off the sun, it will receive light and be able to be seen. The only time it is not able to be seen during its 28-day orbit (轨道) around the earth is when it is right between the earth and the sun. That’s because its back , which is not lit by the sun, is facing us.
Q: Where do birds/ honeybees go in winter?
A: While the bird part is quite easy, since a lot of them get together and travel, the honeybee part is likely to puzzle your parents. It turns out that these busy insects stop being that active when the temperature drops below 50°F. Instead ,they get together in the lower central area of the hive (蜂巢)and form a ball around their queen. This helps keep both warm enough to survive the cold winter months.
1.The sky looks blue mainly because the color blue in the sunlight_______.
A. has the longest wavelength among all the colors
B. cannot be taken in by the gas molecules
C. doesn’t hit “raised area” in the atmosphere
D. cannot pass through space successfully
2.How long can’t the moon be seen during the daytime in a month?
A. 2 B. 28 C.30 D. 31
3.What do honeybees choose to do when the temperature drops below 50°F?
A. They choose to be active in the wild.
B. They choose to keep themselves warm.
C. They choose to travel to a warm place.
D. They choose to get together in the upper central area of the hive.
4.What is NOT explained in the passage?
A. Why is the sky blue?
B. Why is the moon able to be seen during the daytime?
C. Why do birds travel in winter?
D. Where do honeybees go in winter?
九年级英语阅读理解中等难度题查看答案及解析
A recent survey of 2000 parents in Britain showed that they are often afraid of science questions asked by their curious children only because they have no idea what the answer is. Here is a list of some simple questions that you can ask your parents to see if they know the answers.
Q: Why is the sky blue?
A: You probably know white sunlight is made up of seven colors. While it moves in a straight line when going through space, it starts to divide as it hits “raised area” in the atmosphere. The ones with longest wavelengths pass through easily. The blue , however , can be taken in by the gas molecules (分子) because it has a shorter wavelength , which in turn scatters (使分散) it in different directions. That’s why when you look up at the sky, it appears to be blue.
Q:Why does the moon sometimes appear during the daytime?
A: The simple answer to that is because just like any other object it is being lit by the sun. As long as it is around 45 degrees or even 90 degrees off the sun, it will receive light and be able to be seen. The only time it is not able to be seen during its 28-day orbit (轨道) around the earth is when it is right between the earth and the sun. That’s because its back , which is not lit by the sun, is facing us.
Q: Where do birds/ honeybees go in winter?
A: While the bird part is quite easy, since a lot of them get together and travel, the honeybee part is likely to puzzle your parents. It turns out that these busy insects stop being that active when the temperature drops below 50°F. Instead ,they get together in the lower central area of the hive (蜂巢)and form a ball around their queen. This helps keep both warm enough to survive the cold winter months.
1.The sky looks blue mainly because the color blue in the sunlight_______.
A. has the longest wavelength among all the colors
B. cannot be taken in by the gas molecules
C. doesn’t hit “raised area” in the atmosphere
D. cannot pass through space successfully
2.How long can’t the moon be seen during the daytime in a month?
A. 2 B. 28 C.30 D. 31
3.What do honeybees choose to do when the temperature drops below 50°F?
A. They choose to be active in the wild.
B. They choose to keep themselves warm.
C. They choose to travel to a warm place.
D. They choose to get together in the upper central area of the hive.
4.What is NOT explained in the passage?
A. Why is the sky blue?
B. Why is the moon able to be seen during the daytime?
C. Why do birds travel in winter?
D. Where do honeybees go in winter?
九年级英语阅读理解困难题查看答案及解析
A recent survey showed that only 9 percent of teens in the United States smoke cigarettes.That’s down from 23 percent in 2000.While this is good news for the US's overall health, tobacco(烟草)use is still a problem.
Cigarettes can cause many diseases, such as cancer(癌症),lung cliscases and heart problems.Although they know about the health problems, teenagers still smoke.So the campaign of the US Anti-smoking Organization is working to end teenage smoking.Their latest activity uses social media(社交媒体) to remind teenagers of the dangers of smoking.And the activity also encourages teens to learn the facts and become the generation that ends smoking.
However, anti-smoking campaigns may have a new problem to worry about.According to a 2013 report, the use of electronic cigarettes is on the rise.American high school students who reported having used an electronic cigarette rose from 4.7 percent in 2011 to 10 percent in 2012.The increased use of e-cigarettes by teens is deeply troubling.It may become lifelong addictied(上瘾).Besides, we still don’t yet understand the long-term effects(作用)of e-cigarettes.
根据材料内容,选择最佳答案。(每小题2分,共10分)
1.According to the survey, how many American teenagers smoked in 2000?
A.9 percent B.23 percent
C.4.7 percent D.10 percent
2.Which of the following disease may not be caused by cigarettes?
A.skin disease B.cancer
C.lung disease D.heart disease
3.What is the aim of the campaign of the US Anti-smoking Organization?
A.To end the production of cigarettes.
B.To criticize those children who smoke.
C.To protect the rights of non-smokers.
D.To make an effort to end teenage smoking
4.The underlined word “campaign” means _____.
A.activity B.newspaper
C.movie D.officer
5.What do we know about e-cigarettes?
A.E-cigarettes are becoming popular among teenagers.
B.School students like e-cigarettes more than adults do.
C.People won’t let addicted to e-cigarettes.
D.E-cigarettes have bad effects on people’s health.
九年级英语阅读理解困难题查看答案及解析
-A recent survey shows that 35 0ut of 45 students in my class will save their phones first in a fire.
-About _______ of the students made such a choice? Life is far more important, isn't it?
A. half B. one third
C. two thirds D. three quarters
九年级英语单项填空中等难度题查看答案及解析
(2016 •山东东营中考)—A recent survey shows that 35 0ut of 45 students in my class will save their phones first in a fire.
—About ______________ of the students made such a choice? Life is far more important, isn’t it?
A. half B. one third
C. two thirds D. three quarters
九年级英语单选题中等难度题查看答案及解析
A recent study shows that nearly 50 % of the school students in Beijing do not have breakfast. They feel tired all day and have bad memories. So it’s hard for them to get high marks in all kinds of exams.
Some students who study late into the night choose to miss breakfast to have a few more minutes in bed. Others get some money to buy their breakfast on the way to school because their parents are too busy to prepare it for them. A few schoolgirls want to stay slim and often go to school without breakfast.
In fact, breakfast is very important in our daily life. It provides 30 % of the whole day’s energy. To study better, students should start the day with a good breakfast.
Students without 1. breakfast | |
Reasons (原因) | They 2. late into the night and want to stay in bed for a few more minutes. The parents give their children 3.to buy breakfast because they’re too 4.. Some schoolgirls want to keep 5. and go to school without breakfast. |
Results (结果) | They feel 6. all day. They usually have bad 7.. It’s hard for them to get 8. marks in all kinds of exams. |
Advice | The morning meal is very 9.. School students should go to school 10. a good breakfast. |
九年级英语阅读单选困难题查看答案及解析
Dear Sir/Madam,
①It is now common to go online in the home, yet a recent survey showed that ninety-five percent of parents do not know what websites their children visit. I strongly believe that a training project should be started to help parents to improve their Internet and computer skills so that they can better monitor and guide their children.
②One advantage of providing training is that it would get parents to pay more attention to their children's online activities. If they had a better understanding of the Internet, they would see the need to make sure that their children use it properly and responsibly.
③Another argument for providing training to parents is that it would allow parents to help their children with their schoolwork. These days, a lot of homework needs to be done on computers. If parents have poor computer skills, they will be of little or no help with homework, which can make them upset. Some people argue that it is good that students can work independently on computers. However, it is clear that students, especially young students, often need this kind of home support.
④Improving parents' Internet and computer skills might also be a good way or parents to improve their relationships with their children. These days, children spend a lot of their free time on computers. If parents want to be part of that free time, they need to see that playing on computers can be a fun family activity. Joining their children can help parents bridge the generation gap(代沟) between them and their children.
⑤I strongly believe that children need to be helped and guided to use the Internet in a proper and responsible way, and so training is extremely important.
Yours faithfully.
Pat Chan
1.In the letter, the writer ________.
A.thinks parents should improve their Internet and computer skills
B.advises children not to spend a lot of their free time on computers
C.tries to make children less worried about their online schoolwork
D.explains why parents should pay more attention to their children
2.Which of the following best shows the structure of the passage?
A. B.
C. D.
3.The letter is probably from the part of ________ in a newspaper.
A.culture B.sports C.health D.education
九年级英语阅读单选中等难度题查看答案及解析
A recent study in Australia shows that parents are _______ the top five world’s hardest jobs.
A. between B. among C. from D. above
九年级英语单选题中等难度题查看答案及解析