Crossing your legs is an extremely common hab...

Crossing your legs is an extremely common habit; most people don’t even notice that they’re doing it when they sit down. While you may find it comfortable to sit with one knee crossed over the other, it might be causing health problems that you are not aware of.

A study published in Blood Pressure Monitoring stated that sitting with your legs crossed can increase your blood pressure. The reason this happens is because the blood in your legs has to work against gravity to be pumped back to your heart, crossing one leg over the other increases resistance, making it even harder for the blood to circulate. This causes your body to increase your blood pressure to push the blood back to the heart. You won’t feel any immediate effects, but if you sit for long periods of time it’s important that you take note of how long you have your legs crossed for. You shouldn’t have your legs crossed for more than 15 minutes, and it’s important that you get up and walk around at least once every hour.

Crossing your legs can also lead to neck and back pain. Ideally, it’s best for our bodies to sit with our feet planted flat, hip width apart, on the floor, but it’s not easy to maintain perfect posture all day at the office. When you sit with your legs crossed your hips are in a twisted position, which can cause one of your pelvic bones to rotate. Since your pelvic bone supports your neck and spine, this can cause pressure on your lower and middle back and neck.

You also might notice that when you sit with your legs crossed for long periods of time your feet and legs get tingly or have the feeling of being asleep. This is because when one leg sits on top of the other it causes pressure on the veins and nerves in your legs and feet. It can cause numbness and/or temporary paralysis in the legs, ankles, or feet. While the feeling of discomfort may only last a minute or two, repeatedly crossing your legs until they feel numb can cause permanent nerve damage.

So next time you sit down, try to get yourself in the habit of sitting with both of your feet on the floor. Not only will it help your posture and stability, but it will also save your health in the long run.

1.Why can sitting with your legs crossed increase your blood pressure?

A. Because it stops the blood circulating

B. Because it press the nerves in our legs.

C. Because we will be in a twisted position when we sit legs crossed.

D. Because it prevents the blood in your legs from pumping back to heart.

2.Which kind of health problems will we have if we cross the legs for a long time?

A. our blood pressure will increase.

B. Our neck and back will pain.

C. Our feet and legs may get tingly or have the feeling of being asleep.

D. Both A, B and C.

3.What does the author suggest us do when we sit down?

A. We should walk outside at least once every hour.

B. We need put one leg on the top of the other.

C. We’d better sit with our feet planted flat, hip width apart, on the floor.

D. We should choose the most comfortable way to sit.

高三英语阅读理解中等难度题查看答案及解析

Crossing your legs is an extremely common habit; most people don't even notice that they're doing it when they sit down. While you may find it comfortable to sit with one knee crossed over the other, it might be causing health problems that you are not aware of.

A study published in Blood Pressure Monitoring stated that sitting with your legs crossed can increase your blood pressure. The reason for this is that the blood in your legs has to work against gravity to be pumped back to your heart and that crossing one leg over the other increases resistance, making it even harder for the blood to circulate. This causes your body to increase your blood pressure to push the blood back to the heart. You won't feel any immediate effects, but repeated, drawn-out increases in blood pressure can cause long-term health issues. So, planning to sit for a long period of time? Don't keep your legs crossed.

Crossing your legs at the knee can also cause pressure on the major nerve in your leg that passes just below your knee and along the outside of your leg, explains Richard Graves, a medical expert. This pressure can cause numbness and temporary paralysis (麻痹) of some of the muscles in your foot and leg, preventing you from being able to raise your ankle—what we know as that “pins and needles” sensation. While the feeling of discomfort may only last a minute or two, repeatedly crossing your legs until they feel numb can cause permanent nerve damage.

So next time you sit down, try to get yourself in the habit of sitting with both of your feet on the floor. Not only will it help your posture and stability, but it will also save your health in the long run.

1.What can we learn about crossing one's legs?

A. It is a very bad social habit.

B. It is usually practiced deliberately.

C. It can make others feel uncomfortable.

D. It can do harm to people's health.

2.According to the study, sitting with your legs crossed can______.

A. resist gravity effectively　　 B. affect your blood pressure

C. lead to heart attacks easily　　 D. improve the function of legs

3.In the third paragraph "pins and needles" probably means______.

A. serious muscle injuries　　 B. being a little nervous

C. slight sharp pains　　 D. being highly flexible

4.What is the main purpose of the text?

A. To give readers some advice.　　 B. To compare common habits.

C. To evaluate effects of an experiment.　　 D. To introduce research methods.

高三英语阅读理解中等难度题查看答案及解析

Crossing your legs is an extremely common habit; most people don’t even notice that they’re doing it when they sit down. While you may find it comfortable to sit with one knee crossed over the other, it might be causing health problems that you are not aware of.

A study published in Blood pressure Monitoring stated that sitting with your legs crossed can increase your blood pressure. The reason for this is that the blood in your legs has to work against gravity to be pumped back to your heart and that crossing one leg over the other increases resistance, making it even harder for the blood to circulate. This causes your body to increase your blood pressure to push the blood back to the heart. You won’t feel any immediate effects, but repeated, drawn-out increases in blood pressure can cause long-term health issues. So, planning to sit for a long period of time? Don’t keep your legs crossed.

Crossing your legs at the knee can also cause pressure on the major nerve in your leg that passes just below your knee and along the outside of your leg, explains Richard Graves, a medical expert. This pressure can cause numbness and temporary paralysis（麻痹）of some of the muscles in your foot and leg, preventing you from being able to raise your ankle—what we know as that “pins and needles” sensation. While the feeling of discomfort may only last a minute or two, repeatedly crossing your leg until they feel numb can cause permanent nerve damage.

So next time you sit down, try to get yourself in the habit of sitting with both of your feet on the floor. Not only will it help your posture and stability, but it will also save your health in the long run.

1.According to the study, sitting with your legs crossed can ______.

A. affect your blood pressure

B. resist gravity effectively

C. lead to heart attacks easily

D. improve the function of legs

2.What can we learn about crossing one’s legs?

A. It is a very bad social habit.

B. It is usually practiced deliberately

C. It can do harm to people’s health.

D. It can make others feel uncomfortable.

3.In the third paragraph “pins and needles” probably means “_____”

A. slight sharp pains　　 B. being a little nervous

C. serious muscle injuries　　 D. being highly flexible

4.What is the main purpose of the text?

A. To compare common habits.

B. To give readers some advice.

C. To evaluate effects of an experiment.

D. To introduce research methods.

高三英语阅读理解中等难度题查看答案及解析

Crossing your legs is an extremely common habit; most people don’t even notice that they’re doing it when they sit down. While you may find it comfortable to sit with one knee crossed over the other, it might be causing health problems that you are not aware of.

A study published in Blood Pressure Monitoring stated that sitting with your legs crossed can increase your blood pressure. The reason this happens is because the blood in your legs has to work against gravity to be pumped back to your heart, crossing one leg over the other increases resistance, making it even harder for the blood to circulate. This causes your body to increase your blood pressure to push the blood back to the heart.

Crossing your legs can also lead to neck and back pain. When you sit with your legs crossed, your hips are in a twisted position, which can cause one of your pelvic (骨盆的) bones to rotate. Since your pelvic bone supports your neck and spine, this can cause pressure on your lower and middle back and neck.

You also might notice that when you sit with your legs crossed for long periods of time, your feet and legs get tingly or have the feeling of being asleep. This is because when one leg sits on top of the other, it causes pressure on the veins (血管) and nerves in your legs and feet. It can cause numbness and/or temporary paralysis in the legs, ankles, or feet.

So next time you sit down, try to get yourself in the habit of sitting with both of your feet on the floor. Not only will it help your posture and stability, but it will also save your health in the long run.

1.Crossing legs may lead to the following health problems except ________.

A. It can increase your blood pressure

B. It can cause pressure on your lower and middle back and neck

C. It will make your neck and spine twisted

D. It can cause paralysis for the time being

2.Why can crossing your legs increase your blood pressure?

A. Because the blood in your legs has to work against being pumped back to your heart.

B. Because it will prevent the blood circulating.

C. Because crossing legs results in less resistance for the blood to circulate.

D. Because higher blood pressure contributes to pushing the blood back to the heart.

3.What is the purpose of writing this article?

A. To persuade us not to cross our legs any longer.

B. To make us aware of the health problems caused by crossing legs.

C. To tell us the benefits of sitting with our feet on the floor.

D. To show that crossing legs is an extremely common habit.

高三英语阅读理解简单题查看答案及解析

Crossing your legs is an extremely common habit; most people don't even notice that they're doing it when they sit down. While you may find it comfortable to sit with one knee crossed over the other, it might be causing health problems that you are not aware of.

A study published in Blood Pressure Monitoring stated that sitting with your legs crossed can increase your blood pressure. The reason for this is that the blood in your legs has to work against gravity to be pumped back to your heart and that crossing one leg over the other increases resistance, making it even harder for the blood to circulate. This causes your body to increase your blood pressure to push the blood back to the heart. You won't feel any immediate effects, but repeated, drawn-out increases in blood pressure can cause long-term health issues. So, planning to sit for a long period of time? Don't keep your legs crossed.

Crossing your legs at the knee can also cause pressure on the major nerve in your leg that passes just below your knee and along the outside of your leg, explains Richard Graves, a medical expert. This pressure can cause numbness and temporary paralysis (麻痹) of some of the muscles in your foot and leg, preventing you from being able to raise your ankle—what we know as that “pins and needles” sensation. While the feeling of discomfort may only last a minute or two, repeatedly crossing your legs until they feel numb can cause permanent nerve damage.

So next time you sit down, try to get yourself in the habit of sitting with both of your feet on the floor. Not only will it help your posture and stability, but it will also save your health in the long run.

1.What can we learn about crossing one's legs?

A. It is a very bad social habit.

B. It is usually practiced deliberately.

C. It can do harm to people's health.

D. It can make others feel uncomfortable.

2.According to the study, sitting with your legs crossed can______.

A. affect your blood pressure

B. resist gravity effectively

C. lead to heart attacks easily

D. improve the function of legs

3.In the third paragraph "pins and needles" probably means______.

A. slight sharp pains

B. being a little nervous

C. serious muscle injuries

D. being highly flexible

4.What is the main purpose of the text?

A. To compare common habits.

B. To give readers some advice.

C. To evaluate effects of an experiment.

D. To introduce research methods.

高三英语阅读理解中等难度题查看答案及解析

Crossing your legs is an extremely common habit. While you may find it comfortable to sit with one knee crossed over the other, it might be causing health problems that you are not aware of.

A study published in Blood Pressure Monitoring stated that sitting with your legs crossed can increase your blood pressure. The reason is that crossing one leg over the other increases resistance, making it even harder for the blood to circulate and increase your blood pressure. Thus, you shouldn’t have your legs crossed for more than 15 minutes, and it’s important that you get up and walk around at least once every hour.

Crossing your legs can also lead to neck and back pain. Ideally, it’s best for our bodies to sit with our feet planted flat on the floor. When you sit with your legs crossed your hips are in a twisted position, which can cause pressure on your lower and middle back and neck.

You also might notice that when you sit with your legs crossed for long periods of time your feet and legs get painful. This is because when one leg sits on top of the other, it causes pressure on the veins and nerves in your legs and feet. While the feeling of discomfort may only last a minute or two, repeatedly crossing your legs until they feel numb can cause permanent nerve damage.

So next time you sit down, try to get yourself in the habit of sitting with both of your feet on the floor. Not only will it help your posture and stability, but it will also save your health in the long run.

1.A study published in Blood Pressure Monitoring showed that 　　　　　　 .

A. crossing your legs can raise your blood pressure

B. crossing one leg over the other can increase the blood circulation

C. you should have your legs crossed once every hour

D. you should get up and walk around for more than 15 minutes

2.Crossing your legs can cause some health problems except 　　　　　　 .

A. pressure on veins and nerves in legs and feet

B. permanent nerve damage

C. unstable posture

D. neck and back pain

3.What seems to be the writer’s attitude toward crossing legs?

A. Supportive.　　 B. Negative.

C. Casual.　　 D. Confused.

高三英语阅读理解中等难度题查看答案及解析

Crossing your legs is an extremely common habit. While you may find it comfortable to sit with one knee crossed over the other, it might be causing health problems that you are not aware of.

A study published in Blood Pressure Monitoring stated that sitting with your legs crossed can increase your blood pressure. The reason this happens is because the blood in your legs has to work against gravity to be pumped back to your heart, crossing one leg over the other increases resistance, making it even harder for the blood to circulate. You won’t feel any immediate effects, but sitting for long periods of time will hurt you forever.

Crossing your legs can also lead to neck and back pain. Ideally, it’s best for our bodies to sit with our feet planted flat, hip width apart, on the floor, but it’s not easy to maintain perfect posture all day at the office. When you sit with your legs crossed your hips are in a twisted position, which can cause one of your pelvic bones(骨盆) to rotate. Since your pelvic bone supports your neck and spine（脊椎）, this can cause pressure on your lower and middle back and neck.

You also might notice that when you sit with your legs crossed for long periods of time your feet and legs get painful or have the feeling of being asleep. This is because when one leg sits on top of the other it causes pressure on the veins（静脉） and nerves in your legs and feet. It can cause numbness and/or temporary paralysis in the legs, ankles, or feet. While the feeling of discomfort may only last a minute or two, repeatedly crossing your legs until they feel numb can cause permanent nerve damage.

So next time you sit down, try to get yourself in the habit of sitting with both of your feet on the floor. Not only will it help your posture and stability, but it will also save your health in the long run.

1.Which of the following is not the consequence of crossing legs?

A. Neck and back get hurt.

B. Feet and legs become numb.

C. Blood pressure goes up.

D. Pelvic bones keep perfect postures.

2.What does the underlined word “rotate” in Para3 mean?

A. break seriously

B. hurt greatly

C. move casually

D. straighten suddenly

3.What does the text mainly talk about?

A. How to choose a proper sitting posture

B. It is advisable not to sit with legs crossed

C. How to develop beneficial habits

D. Blood pressure harms our bodies.

高三英语阅读理解简单题查看答案及解析

The most common complaint about cellphones is that people talk on them to the annoyance of people around them. But more damaging may be the cellphone’s interruption of our thoughts.

We have already entered a golden age of little white lies about our cellphones, and this is in generally a healthy, protective development. “I didn’t hear it ring” or “I didn’t realize my phone had shut off” are among the lies we tell to give ourselves space where we’re beyond reach.

The concept of being unreachable is not new – we have “Do Not Disturb” signs on the doors of hotel rooms. So why must we feel guilty when it comes to cellphones? Why must we apologize if we decide to shut off the phone for a while?

The problem is that we come from a long-established tradition of difficulty with distance communication. Until the recent mass use of cellphones, it was easy to communicate with someone next to us or a few feet away, but difficult with someone across town, the country or the globe. We came to take it for granted.

But cellphones make long-distance communication common, and endanger our time by ourselves. Now time alone, or a conversation with someone next to us which cannot be interrupted by a phone, is something to be cherished. Even cellphone devotees, myself usually included, can’t help at times wanting to throw their phones away, or curse this invention.

But we don’t and won’t, and there really is no need. That we have the right to take back our private time is a general social recognition.

In other words, we don’t have to pay too much attention to the rings of our own phones. Given the ease of making and receiving cellphone calls, if we don’t talk to the caller right now, we surely will shortly later.

A cellphone call deserves no more importance than a word from the person next to us. Though the call on my cellphone may be the one-in-a-million from Steven Spielberg–who has finally read my novel and wants to make it his next movie. But most likely it is not, and I’m better off, thinking about the idea I just had for a new story, or the slice of pizza I’ll eat for lunch.

1..

What does the writer think about people telling “white lies” about their cellphones?

A. It is a way to show that you don’t like the caller.

B. It is natural to tell lies about small things.

C. It is basically a good way to protect one’s privacy.

D. We should feel guilty when we can’t tell the truth.

2..

What is the meaning of the underlined word “devotees” in Paragraph 5?

A. people who enjoy something.           B. people who are bothered.

C. people who hate something.                D. people who are interrupted.

3..

. According to the author, what is the most annoying problem caused by cellphones?

A. People are always thinking of the cellphone rings so that they fail to notice anything else.

B. Cellphones interrupt people’s private time.

C. People feel guilty when they are not able to answer their cellphones.

D. With cellphones it is no longer possible to be unreachable.

4..

. What does the last paragraph suggest?

A. A person who calls us from afar deserves more of our attention.

B. Steven Spielberg once called the author to talk about the author’s novel.

C. You should always finish your lunch before you answer a call on the cellphone.

D. Never let cellphones disturb your life too much.

高三英语阅读理解中等难度题查看答案及解析

Alzheimer’s disease is _______ as the most common mental disease among older people, and the number of sufferers is growing.

A.judged B.translated C.designed D.recognized

高三英语单项填空简单题查看答案及解析

It is common for older people to forget things. Now an American study has found that memory starts to fail when we are young adults. People younger than thirty years of age usually do not know that they are starting to forget information. But scientists from the University of Michigan say the loss of memory has usually already started.

Researchers say people do not observe this slow reduction in mental ability until the loss affects their everyday activities.

Denise Park led the new study. She directs the Centre for Aging and Cognition at the Institute for Social Research at the University of Michigan. Her team studied more than 350 men and women between the ages of twenty and ninety years. The study identified people in their middle twenties with memory problems.

She says young adults do not know they are forgetting things because their brains have more information than they need.

But she says that people in their twenties and thirties are losing memory at the same rate as people in their sixties and seventies.

Ms. Park says people between the ages of sixty and seventy may note the decrease in their mental abilities. They begin to observe that they are having more trouble remembering and learning new information.

The study found that older adults are more likely to remember false information as being true. For example, they remembered false medical claims as being true. Younger people remembered hearing the information. But they were more likely to remember that it was false.

Ms. Park is now using modern imaging equipment to study what happens in the brains of people of different ages. She is studying what parts of the brain older adults use for different activities compared to younger adults. Ms. Park says mental performance is a direct result of brain activity and brain structure. She says keeping the brain active is important. She hopes future studies will identify ways to improve the operation of our aging minds.

1.The passage is meant to _____________.

2. According to the passage, young adults differ from older adults in that ________.

3. Which of the following statements is NOT TRUE?

4.It can be inferred from what Denis Park says that ______.

5.Which of the following is a suitable title for the passage?

高三英语阅读理解中等难度题查看答案及解析