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.
Nobody wanted to matters for him though everyone knew that he was blameless.
A. solve B. clarify
C. handle D. set about
All over the world people enjoy sports. Sports help to keep people healthy and happy, and to live longer.
1.They buy tickets or turn on their TVs to watch the games. Often they get very excited when their player or team wins.
2.Football, for example, has spread around the world. Swimming is popular in all countries near the sea or in those with many rivers. What fun it is to jump into a pool or lake, whether in China. Egypt or Italy!3.Think how many lovers to skate or ski in Japan, Norway or Canada.
Some sports or games go back thousands of years, like running or jumping. Chinese wushu, for example, has a very long history. But basketball and volleyball are rather new. Neither one is a hundred years old yet.4.Water-skiing is one of the newest in the family of sports.
People from different countries may not be able to understand each other, but after a game together they often become good friends.5.One learns to fight hard but fight fair, to win without pride and to lose with grace.
A. And think of people in cold countries
B. Sports help to train a person's character
C. Not a few people participate in different sports competitions themselves
D. Many people like to watch others play games
E. People aren’t inventing new sports or games
F. Some sports are so interesting that people everywhere take part in them
G. People are inventing new sports or games all the time
The measure of a man，s real character is what he would do it he knew he would never be found out.
— Thomas Macaulay
Some thirty years ago, I was studying in a public school in New York. One day, Mrs. Nantette O’Neill gave an arithmetic ____ to our class. When the papers were ____ she discovered that twelve boys had made exactly the same mistakes throughout the test.
There is nothing really new about ____ in exams. Perhaps that was why Mrs. O’Neill ____ even say a word about it. She only asked the twelve boys to ____ after class. I was one of the twelve. Mrs. O’Neill asked ____ questions, and she did not ____ us either. Instead, she wrote on the blackboard the ____ words by Thomas Macaulay. She then ordered us to ____ these words into our exercise-books one hundred times.
I don’t ____ about the other eleven boys. Speaking for myself I can say: it was the most important single ____ of my life. Thirty years after being introduced to Macaulay’s words, they ____ seem to me the best yardstick(准绳), because they give us a ____ to measure ourselves rather than others.
____ of us are asked to made ____ decisions about nations going to war or armies going to battle. But all of us are called __ daily to make a great many personal decisions. ____ the wallet, found in the street, be put into a pocket or turned over to the policeman? Should the ____ change received at the store be forgotten or ____? Nobody will know except ____. But you have to live with yourself, and it is always better to live with someone you respect.
1.A. test B. problem C. paper D. lesson
2.A. examined B. completed C. marked D. answered
3.A. lying B. cheating C. guessing D. discussing
4.A. didn’t B. did C. would D. wouldn’t
5.A. come B. leave C. remain D. apologize
6.A. no B. certain C. many D. more
7.A. excuse B. reject C. help D. scold
8.A. above B. common C. following D. unusual
9.A. repeat B. get C. put D. copy
10.A. worry B. know C. hear D. talk
11.A. chance B. incident C. lesson D. memory
12.A. even B. still C. always D. almost
13.A. way B. sentence C. choice D. reason
14.A. All B. Few C. Some D. None
15.A. quick B. wise C. great D. personal
16.A. out B. for C. up D. upon
17.A. Should B. Must C. Would D. Need
18.A. extra B. small C. some D. necessary
19.A. paid B. remembered C. shared D. returned
20.A. me B. you C. us D. Them
Sometimes people are mean to others who are smarter or different from them. It makes them feel powerfully or in control. But if they take time to get to know that person, they may become friends!
Try not to show angers towards kids who are being mean to you. Standing up tall and walk away can work really well. Not getting a reaction from them takes away the fun for them. They may stop unless they see what they are doing don’t bother you. If kids continue to be mean, try to talk about them. Being calm and firm but nice. It is hard to be mean to someone is being nice. However, if you ever feel threatened or in the danger, tell an adult right away.