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.
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Wilson ___________considerable success as an artist during the past few years.
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One day I told Mr. Wang, our math teacher, was ill. I was worried about him and went to see him after
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took place. When he heard everything was all right, I could see he was pleasing. Finally I asked
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增加:在缺词处加一个漏字符号(∧),并在其下面写出该加的词。
删除:把多余的词用斜线(\)划掉。
修改:在错的词下划一横线,并在该词下面写出修改后的词。
注意:1.每处错误及其修改均限一词;
2.只允许修改10处,多者(从第11处起)不计分。
Nowadays many people drive instead of taking a bus or walking to work. It causes more traffic jam: and accidents. As the student, what can we do to guarantee our safe? First of all, the traffic rules must be strict obeyed. When we cross streets, wait until the traffic light turn green. Next, don't forget walk on the pavement. Finally, I think it very dangerously to wear headphones while walking or cycling. Since we can't pay enough attention on the traffic around us, so accidents may happen. Taking good care of ourselves and don't let our parents worry about us.
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讲述读书的益处;
呼吁同学们多读书,读好书。
注意:
1.词数80左右;
2.可适当增加细节,以使行文连贯。
My dear fellows,
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增加:在缺词处加一个漏字符号(∧),并在其下面写出该加的词。
删除:把多余的词用斜线(\)划掉。
修改:在错的词下划一横线,并在该词下面写出修改后的词。
注意:1. 每处错误及其修改均仅限一词; 2. 只允许修改10处,多者(从第11处起)不计分。
On Monday, I was riding my bicycle to school. I was worried I'd be late for school because the heavy traffic. Suddenly, a car came towards me and passes very close to me at high speed. This caused me to lose my balance, that resulted in me fall off the bicycle. As a result, I injured in my ankle quite badly. I didn't know a speed at which the vehicle was traveling but obvious it appeared to me that it passed by me very quickly.
As I was falling onto the grounds, I saw the car crash into a white car. Therefore, the driver didn't stop and check what he had done. He just drove away. I really hope the driver could realize her fault and shoulder his responsibilities.
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Forget about the “post-1995 generation”. Young people born in 1995 or later have another name in English—Generation Z.
Now entering adulthood and soon to join the workforce, Generation Z grew up in a special period of time—a time in which technology developed fast, social changes happened every day, the internet became universal and, sadly, so did global terrorism.
It is believed that Generation Z is the generation that is going to shape our future, which is why policy makers, sociologists and company leaders are trying their best to understand these young people.
So, what are Gen Z-ers really like?
Most people agree that the single biggest difference between Gen Z and other generations is how connected they are. This is a group of people who have been familiar with social media as soon as they were born. Social media has changed the way Gen Z-ers communicate with each other and how they get and understand information.
“We are the first true digital natives. I can almost create a document, edit it, post a photo on Instagram and talk on the phone, all at the same time,” said Hannah Payne, an 18-year-old student at UCLA, according to The New York Times. “Generation Z takes in information very fast and loses interest just as fast.”
It may be true that Generation Z-ers have a shorter attention span (注意力持续时间) than a goldfish, but since they grew up among social changes, they are more active in politics. According to the British Election Study, 58 percent of 18-to-24-year-old voted in the 2015 general election in the UK, a big jump from 38 percent in 2005.
Generation Z-ers are also culture creators. “Growing up with the internet has freed this generation from traditional cultural expression.” Wrote Grace Masback, a Huffington Post blogger and a Gen Z-er herself. According to Masback, these young people are no longer willing to let their creativity be limited by their parents of traditional rules. They watch videos and read news online instead of on TV, and they share their experiences on social media.
“We decide what kind of content we want to experience and choose how we experience it,” wrote Masback.
1.Which is TRUE about Gen Z-ers, according to the article?
A. Face-to-face communication is challenging for them.
B. Often doing many things at the same time affects their efficiency.
C. They don’t bother to think about the information they take in carefully.
D. They show more interest in politics than in other fields.
2.What can we infer from the last two paragraphs?
A. Gen Z-ers enjoy great freedom to express themselves.
B. Gen Z-ers enjoy teaching their parents about new cultural trends.
C. Gen Z-ers are against traditional culture.
D. Gen Z-ers are unwilling to obey their parents.
3.Which word can best describe the author’s attitude towards Generation Z?
A. Worried B. Critical C. Appreciative D. Neutral(中立的)
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