Du, 23,is a student from Shanghai University. He won third place at the ninth IOIO (国际折纸奥林匹克) in February this year. A total of 803 competitors from 59countries and areas took part in this year’s event.
Russia’s skating silver medalist AlexandraTrusova, 17, amazed the world with five quadruple jumps (四周跳)during free skate at the Beijing Winter Olympics. No other woman has everfinished five quadruple jumps in an Olympic competition.
At 9 a.m. , he drives to primary schools and middle schools in Xi’an, ShaanxiProvince, to teach students about Shaanxi kuaiban. It is a traditional Chineseform of storytelling to the rhythm(节奏) of bamboo clappers(响板), whichthe art form is named after. Sometimes, he helps students prepare forcompetitions. Usually, his classes run until about 6. p.m. , and then hereturns home to prepare classes for the next day.
Flying kites Kites have quite a long history. The earliest kites were made ofwood, instead of paper. Nowadays, the three most famous kites are the Beijingkite, Tianjin kite, and Weifang kite. And they are quite different from eachother. For example, the swallow-shaped kite is a well-known Beijing style.
Once upona time, two brothers lived in a village. They were both famers and grew corn.The elder brother had many children to feed. The younger brother also had a bigfamily to look after. Although the brothers were poor, they lived happily.
ThreeRiver-Source National Park on the Qinghai-TibetPlateau(青藏高原),is the largest national park in China. Because it is home to the sources of theYangtze, Yellow and Lancang rivers, people call it “China’s water tower”.
Antarctica is a continent (大陆) of ice. There is hardlyany rain in Antarctica, so the Antarctic Desert becomes the driest desert inthe world. It is also the world’s largest desert by area.
Lu Junling, a security guard from Hebei University, became popularon the Internet. As an ordinary (平凡) person, though Lu Junling is more than 50 years old, hememorizes English vocabulary for CET 6 under the street lights every day justto improve himself. When he is free, he also writes novels and sings operas.That’s not all! Painting, music, kongfu, ancient poems, etc. are all hishobbies. So a number of people call him “treasure security guard (宝藏保安)”. Lu Junling said, “If I want to become an artist, I will alwayswork hard for my dream!” Mr. Lu’s words live in many people’s memory.
When youand your friends turn to each other to talk about problems or troubles, yougive each other advice and help. One important thing of our growth is to makedecisions to help our friends and learn to support each other. This requires usto learn what it means to help friends and how to help them in right ways.
Everyone knows how similar chimpanzees (黑猩猩)are to humans. So it’s no surprise that their greetings are also close to ours.The most common ways of greeting between chimpanzees are hand touching andhugging. Sometimes they also kiss each other. Some chimpanzees can even learnsimple sign language.
Raden Roro Hendarti, nearly 50 years old, is alibrarian in Muntang village. She started a “trash library”, hoping to makechildren read more as well as make them realize the importance of environmentprotection. Each weekday, Raden puts all kinds of books on the back of herthree-wheeler (三轮车)and rides to Muntang village. There, children line up to exchange plastic cups,bags and other trash for books from Raden’s mobile library. After finishing theexchange, Raden carries back all the trash.
Each ofthem has their own experience- two people with synesthesia may both “feel”music, but they almost never feel the music in the same way. For example, onemay feel the music of the violin lightly brushing his face; the other may feelit on her ankle (脚踝). And one’s experience of synesthesia is alwaysthe same. If they see the number 5 in the color blue, then 5 is blue every timethey see it.
Slowlybut surely, Amy and her grandparents were making progress. Boxes of all sizeswere placed on top of each other throughout the house. Amy’s grandparents hadlived in the house for years and they had collected many things.
As thegovernment encourages the renaissance (复兴) of traditional culture,Hanfu is getting more and more popular with the teenagers. Every year, we canenjoy different Hanfu shows around the cities. And now quite a few Hanfu clubshave been set up in universities. Members usually wear Hanfu at theirgraduation ceremonies or during holidays. Some even wear Hanfu on regular days,too. And these fans created a special day—China Haniu Day to celebratetraditional Chinese clothing. It falls on the third day of the third month inChinese lunar calendar (阴历).
We allknow that rice, wheat and corn are staples, but do you know there is anotherkind of staple food—potatoes? Potatoes have many advantages. Theyare a good source of vitamin C and potassium(钾). A potato’s vitamin C isas rich as 10 apples. What’s more,potatoes are low in calories(卡路里)-onlythree fourths of the same amount of wheat and corn, according to People’s Daily. Potatoes are easy togrow. It can be grown in both the north and the south during winter, spring andautumn. The plant is also able to bear drought(干旱). Some areas of China arefacing water shortages, so the potato is safe to grow.
Chopsticksoriginated from(起源于) China.Though simple and little, they are agreat invention in the history of humans. There are many legends aboutChopsticks, Da Yu and Chopsticks is one of them.It issaid that during Yao and Shun times, Shun ordered Yu to control the flood. Oneday, Yu took a boat to an island, he was so hungry that he used an earth pot tocook meat. After the meat was well-done in boiled water, he didn’t want towaste time to wait for it to cool, so he took two branches to pick up the meatfrom the soup. After, to save time, he always took small branches to take outfood from the hot pot. For a long time, he was skilled at picking up food withsmall sticks. In this way, the first types of chopsticks were born.
Mostschools offer different kinds of subjects and activities for students, but someschools offer additional training in certain areas, such as the performing andarts. In this way, schools can help students develop their artistic talentsfrom an early age and have greater success in their future profession. THE ROYAL BALLET(芭蕾舞)SCHOOL
Locatedin the mountains about 100 miles from Los Angeles, the Idyllwild Arts Academyis a boarding school for young artists. It offers training in arts, likedrawing, painting, photography and cinema, along with programmes for theperforming arts. The school’s quiet, rural location also makes it a verypeaceful and beautiful place to learn. THE NATIONAL CIRCUS(杂技)SCHOOL
∵在△EFP中,|EF|=2c,EF上的高为点P的纵坐标,∴S△EFP=4/3c2=12,∴c=3,即P点坐标为(5,4).由两点间的距离公式|PE|=√("(" 5+3")" ^2+4^2 )=4√5,|PF|=√("(" 5"-" 3")" ^2+4^2 )=2√5,∴a=√5.又b2=c2-a2=4,故所求双曲线的方程为x^2/5-y^2/4=1.5.求适合下列条件的双曲线的标准方程.(1)两个焦点的坐标分别是(-5,0),(5,0),双曲线上的点与两焦点的距离之差的绝对值等于8;(2)以椭圆x^2/8+y^2/5=1长轴的端点为焦点,且经过点(3,√10);(3)a=b,经过点(3,-1).解:(1)由双曲线的定义知,2a=8,所以a=4,又知焦点在x轴上,且c=5,所以b2=c2-a2=25-16=9,所以双曲线的标准方程为x^2/16-y^2/9=1.(2)由题意得,双曲线的焦点在x轴上,且c=2√2.设双曲线的标准方程为x^2/a^2 -y^2/b^2 =1(a>0,b>0),则有a2+b2=c2=8,9/a^2 -10/b^2 =1,解得a2=3,b2=5.故所求双曲线的标准方程为x^2/3-y^2/5=1.(3)当焦点在x轴上时,可设双曲线方程为x2-y2=a2,将点(3,-1)代入,得32-(-1)2=a2,所以a2=b2=8.因此,所求的双曲线的标准方程为x^2/8-y^2/8=1.当焦点在y轴上时,可设双曲线方程为y2-x2=a2,将点(3,-1)代入,得(-1)2-32=a2,a2=-8,不可能,所以焦点不可能在y轴上.综上,所求双曲线的标准方程为x^2/8-y^2/8=1.
2、值日生做值日积极,并能在规定时间内完成值日任务,一人一次奖1分; 3、值日卫生做得彻底,受到老师或学校表扬的,一人一次1奖分; 4、起床后被子折叠整齐、规范,床单平整,一人一次奖1分,并奖被子负责人1分;5、被子折叠连续一周都是最好的,一人奖1分; 6、值日生打扫卫生仔细,寝室卫生检查没出现任何问题,值日生和寝室长各奖1分; 7、主动帮忙办寝室文化专栏的,一人一次奖2分; 8、寝室得“文明寝室”称号的,所有寝室成员各奖1分,值日生和寝室长奖2分;9、随季节变化及时进行疾病预防的,一人一次奖1分。
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