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.
假如你是李华，你的新西兰笔友Jack最近迷上电脑游戏而熬夜，忽视学业，并受父母责骂，请你发一封劝告的电子邮件，不少于120词。
参考词汇：be addicted to... 对……有瘾
Dear Jack,
I’m sorry to know that _____________________________________________________________________
____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
Faithfully yours,
Li Hua
假定英语课上老师要求同学们交换修改作文，请你修改你同桌写的以下作文。文中共有10处语言错误，每句中最多有两处。错误涉及一个单词的增加、删除或修改。
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，并在该词下面写上修改后的词。
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。
Being a volunteer can bring much benefits to us. We can learn new skills, gain valuable experiences, meet new people and so on. In the late August last year, I took part the voluntary work for a international sports meeting. Every day I worked in the supply office in the Athlete Villages for about seven hours. My job is to deliver daily supplies to the officials and athletes. When the sports meeting closed, I finished my job successful. Though the job was hard, but it was very meaningful. I made some friends with the people live there and some athletes from all around the world. This voluntary work also enriched your working experience, from that I learned some skills as well.
阅读下面材料，在空白处填入1个适当的单词或括号内单词的正确形式。
1. present, high school students are under increasing pressure to study long hours every day. They spend over 8 hours a day studying at school, some of 2.even have to attend extra 3.(class) in their spare time. This greatly affects their health and make their parents and teachers concerned. 4.(help) solve the problem, recently, some relevant government departments have made 5. new regulation(规定) that no students shall go to school at weekends or during official holidays. We support such a reform( 改革) and we know that 6. is necessary and important for us students to balance study and 7. ( relax). You see, New Year's Day8.(come) , and I'll make good use of the time to relax. Also, I come to realize that 9.I can rest well, I will be able to study 10.( effective) when I come back to school.
June is always an unhappy time for Senior 3 students. They have to leave school to_________their dreams in different _______after finishing their big exam. It's a difficult time when students _________to say goodbye to carefree（无忧无虑的）high school life and close friends．
People always say that teenage friendship is the most precious. Kids are too young to true friendship _________most adults _________ to ate it to fame and wealth.
In fact, things are quite different with high school best friends. We share each other's _________. We discuss news from all walks of life and begin to _________our values. We support each other on the journey to the biggest _________ in our life. We also _________ success and failure. The seeds of deeply________. Many of us don’t realize this__________we enter society. One of my friends, Lily, __________ how strong the bond(联系)with high school friends can be. She said, "It was my high school friend who helped me __________ the darkest days in my life. "In 2015 Lily lost her job in Shanghai. Her best friend was staying in a college dormitory and took her in. Each night the two girl squeezed(挤)into a narrow single bed, chatting and crying. “I will never forget her care and encouragement, __________supported me out of the darkness,” said Lily.
I __________ remember my last days in Senior 3 when we __________ so much personal information with each other, both of us hoping to keep the friendship __________ forever. But we didn’t realize we were already deep in each other’s __________. During the past 10 years, whenever I’ve needed help or wanted to pour out my __________, she has always been there at the other end of a telephone line.
It is true that friends come and go. But never forget the ones who have been there for you. Take a closer look at those now around you; they could be the most precious treasure you discover in your entire__________.
1.A. perform B. achieve C. create D. keep
2.A. ways B. relations. C. stages D. directions
3.A. begin B. decide. C. Have D. volunteer
4.A. when B. so C. while D. that
5.A. end B. plan C. manage D. attempt
6.A. time B. wealth C. money D. secret
7.A. measure B. weigh C. abandon D. shape
8.A. question B. challenge C. problem D. failure
9.A. share B. expect C. lake D. meet
10.A. developed B. changed C. rooted D. pulled
11.A. until B. but C. after D. unless
12.A. heard B. experienced C. ignored D. thought
13.A. go through B. look through C. get through D. break through
14.A. that B. who C. as D. which
15.A. still B. yet C. even D. already
16.A. turned B. discussed C. exchanged D. held
17.A. disappearing B. going C. running D. advancing
18.A. brain B. heart C. head D. spirit
19.A. disaster B. curiosity C. devotion D. unhappiness
20.A. study B. period C. life D. work
Do you know how to pick a good book you'll really like？Here are some tips．
Start with Your Interest. 1.．You can pick something that you love to read，not for school. They can be ancient martial(武术)arts, computers, or fashion design.
What's Your Type？Do you prefer fiction or nonfiction (or both)？Fiction books，like novels，can transport you to another world or help you imagine something beyond your own experience．Nonfiction books give you the who，what，when，and why of something. 2.. Many of them read like novels from start to finish．
Read the description. The reviews and quotes on the back and inside covers of many books give you an idea of what the book is about. They can also help you pick future books, too．If you find a book you really like, take a minute to read the quotes and see which authors praised the book. 3..
Find a Family Favorite．Which book did your mother love best when she was at your age? 4.. Find out and give them a read-then you can share your thoughts about the book．
Finally，you'll probably enjoy what you're reading a lot more if you find a quiet place and make time for the book. 5.. You can put on some good music, get yourself some tea and let yourself be carried away by the book. You'll see that time does fly when you're reading something you love!
A．How about your brothers and sisters？
B．They tell stories using facts-but that doesn't mean they're boring．
C．Reading is a good way to improve your English．
D．Most reading is best enjoyed when you can concentrate(全神贯注)on it．
E．Often，they'll have similar styles and you might find books you like by those authors，too．
F．So you should read as much as possible when you are free．
G．Reading on your own isn't like reading for school．
