It is bad to have food stuck between your tee...

It is bad to have food stuck between your teeth for long periods of time. This is because food attracts germs(细菌), germs produce acid, and acid hurts your teeth and gums. Flossing(使用牙线) helps to remove the food that gets stuck between your teeth. This explains why flossing helps to keep your mouth healthy, but some doctors say that flossing can be also good for your heart.

It may seem strange that something your do for your teeth can have any effect on your heart. Doctors have come up with a few ideas about how flossing works to keep your heart healthy. One idea is that the germs that hurt your teeth can leave the mouth and travel into your blood. Germs that get into the blood can then attack your heart. Another idea is based on the fact that when there are too many germs in your mouth, the body tries to fight against these germs. For some reason, the way the body fight these mouth germs may end up weakening the heart over time.

Not every doctor agrees about these ideas. Some doctors think that the link between good flossing habits and good heart health is only a coincidence. The incidence(发生率) of two or more events is completely random, as they do not admit of any reliable cause and effect relationship between them. For example, every time I wash my car, it rains. This does not mean that when I wash my car, I somehow change the weather. This is only a coincidence. Similarly, some doctors think that people who have bad flossing habits just happen to also have heart problems, and people who have good flossing habits just happen to have healthy hearts.

The theory that flossing your teeth helps to keep your heart healthy might not be true. But every doctor agrees that flossing is a great way to keep your teeth healthy. So even if flossing does not help your heart, it is sure to help your teeth. This is enough of a reason for everyone to floss their teeth every day.

1. From the passage, we know that_____

A. food stuck between your teeth may hurt your teeth

B. all of the doctors agree that flossing is good for your heart

C. doctors’ judgment about flossing is based on medical research

D. not every doctor thinks flossing helps to keep your teeth healthy

2.The underlined sentence in Paragraph 3 is to____.

A. Provide an example

B. Make a comparison

C. Introduce a new topic

D. Develop a previous statement

3.Which of the following best states the main idea of the last paragraph?_______.

A. It is a fact that flossing can help your heart as well as your teeth.

B. There is no good reason to believe that flossing will help your heart.

C. Because doctors find flossing won’t help your heart, it is useless to floss.

D. Even if flossing is only good for your teeth, you should still do it every day.

4.Which is the best title for the passage?

A. Flossing by Coincidence

B. How to Keep Your Teeth Healthy

C. Flossing Habits and Healthy Hearts

D. Why Doctors Disagree about Flossing

高三英语阅读理解中等难度题查看答案及解析

It is bad to have food stuck between your teeth for long periods of time. This is because food attracts germs; germs produce acid, and acid hurts your teeth and gums. Flossing (使用牙线) helps to remove the food that gets stuck between your teeth. This explains why flossing helps to keep your mouth healthy, but some doctors say that flossing can also be good for your heart.

It may seem strange that something you do for your teeth can have any effect on your heart. Doctors have come up with a few ideas about how flossing works to keep your heart healthy. One idea is that the germs that hurt your teeth can leave the mouth and travel into your blood.Germs that get into the blood can then attack your heart. Another idea is based on the fact that when there are too many germs in your mouth, the body tries to fight against there germs. For some reason, the way the body fights these mouth germs may end up weakening the heart overtime.

Not every doctor agrees about these ideas. Some doctors think that the link between good flossing habits and good heart health is only a coincidence. The incidence (发生率) of two or more events is completely random, as they do not admit of any reliable cause and effect relationship between them. For example, every time I wash my car, it rains. This does not mean that when I wash my car, I somehow change the weather. This is only a coincidence. Similarly, some doctors think that people who have bad flossing habits just happen to also have heart problems, and people who have good flossing habits just happen to have healthy hearts.

The theory that flossing your teeth helps to keep your heart healthy might not be true. But every doctor agrees that flossing is a great way to keep your teeth healthy. So even if flossing does not help your heart, it is true to help your teeth. This is enough of a reason for everyone to floss their teeth every day.

1.From the passage, we know that ________.

A. food stuck between your teeth may hurt your teeth

B. all of the doctors agree that flossing is good for your heart

C. doctors’ judgment about flossing is based on medical research

D. not every doctor thinks flossing helps to keep your teeth healthy

2.The underlined sentence in Paragraph 3 is to ________.

A. provide an example

B. make a comparison

C. introduce a new topic

D. develop the previous statement

3.Which of the following best states the main idea of the last paragraph?

A. It is a fact that flossing can help your heart as well as your teeth.

B. There is no good reason to believe that flossing will help your heart.

C. Because doctors find flossing won’t help your heart, it is useless to floss.

D. Even if flossing is only good for your teeth, you should still do it every day.

4.Which is the best title for the passage?

A. Flossing by Coincidence

B. How to Keep Your Teeth Healthy

C. Flossing Habits and Healthy Hearts

D. Why Doctors Disagree About Flossing

高三英语阅读理解中等难度题查看答案及解析

–Your car requires _____, Jeff．

–Sure．You know it is also what I want to have _____ for long．

A． being repaired；to be repaired

B． repairing；it repaired

C． repairing；repaired

D． to be repaired；it repaired

高三英语单项填空中等难度题查看答案及解析

–Your car requires _____, Jeff.

–Sure. You know it is also what I want to have _____ for long.

A. being repaired; to be repaired

B. repairing; it repaired

C. repairing; repaired

D. to be repaired; it repaired

高三英语单项填空中等难度题查看答案及解析

It’s bad for your eyes ____ computer games for a long time.

高三英语单项填空简单题查看答案及解析

It is very important for us to _______ between good and bad.

A. reject           B. realize                  C. range                D. distinguish

高三英语单项填空中等难度题查看答案及解析

When you don’t have anything planned for the day or it’s rainy outside and your children are stuck in the house, why not sit around and tell them riddles? Telling riddles will make your family laugh and sometimes even scratch their heads, trying to figure out what the answer is.

Riddles have been a pastime for centuries. Not only have riddles been something for passing the time, but they have also been used to pass on secret information during the Second World War. Even the ancient Greeks used riddles. They would tell riddles at parties and whoever was the first to get them right would receive prize.

Most riddles use words that have double meanings or share the same sound like “hear” and “here”. So in order to get the riddle, you will have to do some creative thinking and think of all the possibilities of different words. The difficulty of figuring out the riddle is based on the riddle itself. The riddle has to provide you with enough clues to come to the right answer, but that doesn’t mean that the clues have to be easy.

If you are looking to tell riddles but don’t know any, you can look online and you will find a large number of sites that will have hundreds of different riddles to choose from. If you would like to look somewhere else then you could look at your local bookstore, where you will be able to find many different books with thousands of riddles to choose from. You can even find websites and books that will tell you how to write your own riddles.

After you have found some resources that have different riddles, you will need to read through them to find the right ones for you and your family: You will also need to make sure that your kids will have a chance to figure out the answers. So take your time and choose the right family riddles to tell.

1.What is the author’s main purpose in writing the text?

A. To recommend an interesting family activity.

B. To stress the importance of family activities.

C. To encourage children to read more books.

D. To introduce the history of riddles.

2.From the text we know that riddles _______.

A. do not have enough clues            B. have a very long history

C. were used in World War One         D. were first used in ancient Rome

3.In Paragraph 3, the author mainly ________.

A. discusses how riddles are created

B. explains why fiddles are interesting

C. tells people how to solve riddles

D. shows the benefits of telling riddles

4.To collect riddles, the author suggests ________.

A. one way       B. two ways         C. three ways        D. four ways

高三英语阅读理解中等难度题查看答案及解析

When you don’t have anything planned for the day or it’s rainy outside and your children are stuck in the house, why not sit around and tell them riddles? Telling riddles will make your family laugh and sometimes even scratch their heads, trying to figure out what the answer is.

Riddles have been a pastime for centuries. Not only have riddles been something for passing the time, but they have also been used to pass on secret information during the Second World War. Even the ancient Greeks used riddles. They would tell riddles at parties and whoever was the first to get them right would receive prize.

Most riddles use words that have double meanings or share the same sound like “hear” and “here”. So in order to get the riddle, you will have to do some creative thinking and think of all the possibilities of different words. The difficulty of figuring out the riddle is based on the riddle itself. The riddle has to provide you with enough clues to come to the right answer, but that doesn’t mean that the clues have to be easy.

If you are looking to tell riddles but don’t know any, you can look online and you will find a large number of sites that will have hundreds of different riddles to choose from. If you would like to look somewhere else then you could look at your local bookstore, where you will be able to find many different books with thousands of riddles to choose from. You can even find websites and books that will tell you how to write your own riddles.

After you have found some resources that have different riddles, you will need to read through them to find the right ones for you and your family: You will also need to make sure that your kids will have a chance to figure out the answers. So take your time and choose the fight family riddles to tell.

1.What is the author’s main purpose in writing the text?

A. To recommend an interesting family activity.

B. To stress the importance of family activities.

C. To encourage children to read more books.

D. To introduce the history of riddles.

2.From the text we know that riddles _______.

A. do not have enough clues            B. have a very long history

C. were used in World War One         D. were first used in ancient Rome

3.In Paragraph 3, the author mainly ________.

A. discusses how riddles are created

B. explains why fiddles are interesting

C. tells people how to solve riddles

D. shows the benefits of telling riddles

4.To collect riddles, the author suggests ________.

A. one way       B. two ways    C. three ways    D. four ways

高三英语完型填空中等难度题查看答案及解析

The supermarket sells many foods that have been_____ , so it is convenient to feed your stomach.

A. produced        B. processed        C. stored       D. charged

高三英语单项填空中等难度题查看答案及解析

It may take a few weeks for your application to be ____.

A. possessed　　 B. processed

C. produced　　 D. persuaded

高三英语单项填空中等难度题查看答案及解析