www，gov，CN，(共8篇)
www，gov，CN，（一）：
两个人握手1次三个人握手3次四个人握手6次求n个人握手次数这是一个组合问题,答案是n!/(n-2)!*2!
!是指从这个数一直乘到一,比如2!=2*1,5!=5*4*3*2*1
www，gov，CN，（二）：
鐢蹭箼涓ゅ伐绋嬮槦鍒嗗埆鎷呬换涓€鏉?鍗冪背鍏?矾鐨勭淮淇?伐浣?鐢查槦鏈変竴鍗婃椂闂存瘡澶╃淮淇?叕璺痻绫冲彟涓€鍗婃椂闂存瘡鐢蹭箼涓ゅ伐绋嬮槦鍒嗗埆鎷呬换涓€鏉?鍗冪背鍏?矾鐨勭淮淇?伐浣?鐢查槦鏈変竴鍗婃椂闂存瘡澶╃淮淇?叕璺痻绫冲彟涓€鍗婃椂闂存瘡姣忓ぉ缁翠慨鍏?矾x鍗冪背.涔欏?缁翠慨鍓嶄竴鍗冪背鍏?矾鏃?姣忓ぉ缁翠慨x鍗冪背锛涚淮淇?悗涓€鍗冪背鍏?矾鏃?姣忓ぉ缁翠慨y鍗冪背
锛?)姹傜敳涔欎袱瀵瑰畬鎴愪换鍔￠渶瑕佺殑鏃堕棿锛堢敤鍚玿\y鐨勪唬鏁板紡琛ㄧず锛夛紱
锛?锛夐棶鐢蹭箼涓ら槦鍝?槦鍓嶅畬鎴愪换鍔
甲队有一半时间每天维修公路x米另一半时间每每天维修公路(y)千米
1,设甲队M天完成:
M/2*X+M/2*Y=2
M=4/(X+Y)
甲队完成任务需要4/(X+Y)天
设乙队N天完成:
N=1/X+1/Y
N=(X+Y)/(XY)
乙队完成任务需要(X+Y)/(XY)天.
2,
甲队完成任务需要天数-乙队完成任务需要天数
=4/(X+Y)-(X+Y)/(XY)
=(4XY-(X+Y)^2)/[(X+Y)XY]
=(4XY-X^2-2XY-Y^2)/[(X+Y)XY]
=(-X^2+2XY-Y^2)/[(X+Y)XY]
=-(X-Y)^2/[(X+Y)XY]
因为X不等于Y,
所以:-(X-Y)^2/[(X+Y)XY]
www，gov，CN，（三）：
急救!高中英语翻译,在线立等,谢谢大家.2他们已是多年的好友,有很多共同之处common
鈥?浠栦滑宸叉槸澶氬勾鐨勫ソ鍙嬶紝鏈夊緢澶氬叡鍚屼箣澶刢ommon鈥?韬?寮備埂锛屼綘寰楄皑闃茶?楠楅挶璐?are銆€n.鈥?浣犵湅鐨勪功瓒婂?锛屼綘灏辨劅鍒拌嫳璇?啓浣滆秺瀹规槗銆倀he銆€more銆€the銆€more鈥?鍦ㄨ繖涓€琛岃幏寰楁垚鍔熸槸闅剧殑锛岃?鎯冲嚭绫绘嫈钀冩槸闅句笂鍔犻毦銆俰t鈥?褰撴礂琛ｆ満鍑洪棶棰樻椂锛屾渶濂借繕鏄?拰涓撳?鑱旂郴锛屼笉鐒剁殑璇濓紝浣犲彲鑳戒細鏈夐夯鐑︺€俰t
They have been friends for many years,and have much in common.
www，gov，CN，（四）：
希望哥哥姐姐来帮我我知道这些题对你们来说太简单了 但是也请好好答 求你们了!5555~
根号（-2X-1）有意义 X取值范围是【】
在RT△ABC中 ∠C=90° AB=5 AC=4 sinA的值=【】
X Y均为整数 且根号X加根号Y等于根号189 则/X-Y/=【】
根号（3a-8）与根号(17-2a)是同类二次项 则a=【】
化简：
根号(24a^3b^2 )= 【】
根号(50/x^2+2x+1)= 【】且X＞-1
有一组人 互送卡片1张 已知全组共送卡72张 则小组有【】人
答得好 祝答题者万事如意【www，gov，CN，】
根号（-2X-1）有意义 X取值范围是【 x < 0 】
∵根号没有负数 ∴不等于0 则只能小于0
在RT△ABC中 ∠C=90° AB=5 AC=4 sinA的值=【 30° 】
∵已知三角形ABC是直角三角形 又∵∠C=90° 则∠A+∠B=90° ∴∠A=30°
有一组人 互送卡片1张 已知全组共送卡72张 则小组有【 36 】人
∵互送卡片 则72除2【www，gov，CN，】
www，gov，CN，（五）：
英语作文写信格式淇″ご锛圚eading锛堻/p>
銆€銆€淇″ご鏄?寚鍙戜俊浜虹殑鍦板潃鍜屾棩鏈?閫氬父鍐欏湪绗?竴椤电殑鍙充笂瑙?琛岄?鍙?互榻愬ご鍐?涔熷彲浠ラ€愯?缂╄繘鍐?鍦板潃鐨勪功鍐欓『搴忕敱灏忓埌澶э細闂ㄧ墝鍙枫€佽?閬撱€佸煄甯傘€佺渷锛堝窞锛夈€侀偖缂栥€佸浗鍚?鏈€鍚庡啓鍙戜俊鏃ユ湡.绉佷汉淇′欢涓€鑸?彧鍐欏瘎淇℃棩鏈熷嵆鍙?渚嬪?锛欬/p>
銆€銆€123 Tianhe Road
銆€銆€Tianhe District
銆€銆€Guangzhou 510620
銆€銆€Guangdong Province
銆€銆€P. R. C.
銆€銆€Jan. 8, 2010
銆€銆€5.1.2 淇″唴鍦板潃锛圛nside Address锛堻/p>
銆€銆€淇″唴鍦板潃瑕佸啓鏀朵俊浜虹殑濮撳悕鍜屽湴鍧€.鍦ㄥ叕鍔′俊浠朵腑瑕佸啓鏄庤繖涓€椤?鍦ㄧ?浜轰俊浠朵腑,杩欎竴椤瑰父甯哥渷鐣?璇ラ」鍐欏湪鍐欎俊鏃ユ湡涓嬩竴琛岀殑宸︿笂瑙?鏍煎紡涓庡瘎淇′汉鍦板潃涓€鏍?
銆€銆€5.1.3 绉板懠锛圫alutation锛堻/p>
銆€銆€绉板懠鏄??鏀朵俊浜虹殑绉拌皳,搴斾笌宸﹁竟绾垮?榻?鍐欏湪鏀朵俊浜哄?鍚嶃€佸湴鍧€涓嬮潰1-2琛屽?.鍦ㄧО鍛煎悗,鑻卞浗浜哄父鐢ㄩ€楀彿,缇庡浗浜哄垯甯哥敤鍐掑彿.鍦ㄧ?浜轰俊浠朵腑鍙?洿鍛兼敹淇′汉鐨勫悕瀛?浣嗗叕鍔′俊浠朵腑涓€瀹氳?鍐欐敹淇′汉鐨勫?.澶ч儴鍒嗕俊浠跺湪绉板懠鍓嶅姞鈥淒ear鈥?濡傦細
銆€銆€Dear Professor/Prof. Bergen:
銆€銆€Dear Dr. Johnson,
銆€銆€瀵逛笉鐩歌瘑鐨勪汉鍙?寜鎬у埆绉板懠锛欬/p>
銆€銆€Dear Sir: 鎴朌ear Madam: Dear Ladies.
銆€銆€濡傛灉涓嶇煡鏀朵俊浜虹殑鎬у埆鍒欏彲鐢―ear Sir or Madam:
銆€銆€5.1.4 姝ｆ枃锛圔ody of Letter锛堻/p>
銆€銆€姝ｆ枃鏄?功淇＄殑涓讳綋.涓庝腑鏂囦俊浠朵笉鍚岀殑鏄?鑻辨枃涔︿俊鐨勬?鏂囩殑寮€澶翠笉鏄?厛鍐欎竴浜涢棶鍊欒?,鍐嶉槓鏄庡啓淇＄殑鐩?殑,鑰屾槸鐩存帴璇存槑鍐欎俊浜虹殑韬?唤鍙婂啓淇＄殑鐩?殑,鐒跺悗鎻愬嚭鍐欎俊浜虹殑鎯呭喌銆佹兂娉曟垨瑕佹眰,骞跺姞浠ュ繀瑕佺殑瑙ｉ噴鎴栬?鏄?鑻辨枃涔︿俊闄堣堪鐩?殑鏃?搴旇?鐩存埅浜嗗綋,鎰忔€濇槑纭?灞傛?娓呮?,瑷€绠€鎰忚祬.
銆€銆€涔︿俊姝ｆ枃鐨勭?涓€鍙ヨ瘽鎴栫?涓€娈?閫氬父琚?О涓鸿捣棣栬?.涓€鑸??鏉?浜轰滑涔犳儻鐢ㄤ竴浜涘?濂楃殑鍐欐硶浣滀负涔︿俊姝ｆ枃鐨勮捣濮?鍗冲厛灏嗗?鏂规潵淇＄殑鏃ユ湡銆佷富棰樺姞浠ョ畝鍗曟弿杩?浠ヤ究浣垮?鏂逛竴鐪嬩究鐭ヨ?淇℃槸鍥炵瓟鍝?竴灏佷俊鐨?濡傛灉鏄??涓€娆＄粰鍒?汉鍐欎俊,涔熷彲鐢ㄥ紑澶磋?浣滃繀瑕佺殑鑷?垜浠嬬粛,骞惰〃鏄庤嚜宸卞啓淇＄殑涓昏?鐩?殑.
銆€銆€5.1.5 缁撳熬绀艰瘝锛圕omplimentary Close锛堻/p>
銆€銆€鍏?姟淇′欢鐨勭粨灏剧ぜ璇嶅寘鍚?袱閮ㄥ垎锛氬彂淇′汉鐨勭粨灏惧?璇?笌缃插悕.缁撳熬濂楄?鍐欏湪绛惧悕涓婇潰涓€琛?绗?竴涓?瓧姣嶈?澶у啓,濂楄?缁撳熬鍚庨潰瑕佸姞閫楀彿.鍦ㄥ叕鍔′俊浠朵腑,鍙戜俊浜哄父鐢ㄧ殑缁撳熬濂楄?鏈夛細
銆€銆€Yours truly, Yours sincerely, Respectfully yours, Cordially yours, Yours cordially绛?
銆€銆€绉佷汉淇′欢涓?鍙戜俊浜哄父鐢ㄧ殑缁撳熬濂楄?鏈夛細
銆€銆€Sincerely yours, Lovely yours, Your lovely, Your loving son/daughter绛?
銆€銆€5.1.6 绛惧悕锛圫ignature锛堻/p>
銆€銆€鍐欎俊浜虹殑绛惧悕甯镐綅浜庣粨灏剧ぜ璇嶆?涓嬫柟涓€浜岃?.闄ら潪鏄?粰寰堢啛鎮夌殑浜哄啓淇?绛惧悕涓€鑸?』鍐欏嚭鍏ㄥ悕.绛惧悕甯稿父杈冩溅鑽?涓嶆槗杈ㄨ?,鍥犳?鍦ㄧ?鍚嶇殑姝ｄ笅鏂归』鎵撳嵃鍑哄叏鍚?
A Letter to A Schoolmate
銆€銆€June 23, 2001
銆€銆€Dear Xiao Wang,
銆€銆€I鈥檓 very glad to learn that you鈥檙e going to visit me during the week-long holiday. My parents will also be happy to see you again. I am sure you will enjoy every minute here.
銆€銆€I have arranged our schedule for the holiday as follows. On the first day you arrive, I鈥檒l show you around our campus. On the second day, we鈥檒l visit the art gallery and the music hall. Next day, we鈥檒l climb a hill in the northeastern part of the city. On the top of the hill, we can have a wonderful bird鈥檚 eye view of the city. During the next three days, we鈥檒l make some short trips to some places of interest nearby, such as the Swan Cave, the Golden Lake, etc. On the last day, I鈥檒l see you off at the railway station.
銆€銆€Please remember to call and tell me your train number and time of arrival so that I can meet you at the railway station. By the way, it鈥檚 very hot here and we have a lot of sunshine, so don鈥檛 forget to wear you sunglasses.
銆€銆€I鈥檓 looking forward to seeing you soon.
銆€銆€Sincerely yours,
銆€銆€Zhang Ying
www，gov，CN，（六）：
Domain:www.aokecnc.com,why the chain of rising fast,fall fasterThe site did have a period of time.
To hold calm,network optimization is like this
www，gov，CN，（七）：
If I don’t care about you,I wouldn’t get so mad at the things you如果我真的不在乎你,我才不会对你所做的事情这么的生气!
www，gov，CN，（八）：
英语翻译In 1896,the first modern Olympic Games was held in Athens,Greece.Since then many countries have successfully held the Olympics,such as England,France,Germany,Canada,the USA,Spain and Australia.After more than a century the games returns to its hometown this year.
When people hold the Olympic Games,they always make an emblem(会徽) .The emblem of the Athens Olympic Games this year is a white circle of olive（橄榄）branches（枝）in the sky.
Now Athens is developing a spirit of peace.An officer said,“While in Athens,the world should be at peace.We hope the peace is not just for a short time.We would like the message from the Athens Games to help countries come together and solve their problems.”
Four years later,the Olympic Games will be held in China.And China has already made a seal（印章）as the emblem of the Beijing 2008 Olympic Games.The emblem has a single Chinese character（汉字）on a red seal and means “Chinese seal – dancing Beijing”.Below it,there are the words “Beijing 2008”.The character in the emblem is “Jing”.It means “capital” of China and it is also like a runner or a dancer.The running figure (人形) of the emblem shows the spirit of the Olympics – faster,higher and stronger.
1896,第一届现代奥运会在雅典举行,希腊.自那时以来许多国家成功地举办了奥运会,如英国,法国,德国,加拿大,美国,西班牙和澳大利亚.经过一个多世纪游戏返回其家乡一年.当人们举行奥运会的时候,他们总是做象征（会徽）.雅典奥运会徽是一个白色的圆圈今年橄榄（橄榄）枝（枝）在天空中.现在雅典发展和平精神.一位官员说,“而在雅典,世界要和平.我们希望和平不仅仅是很短的时间.我们将消息从雅典奥运会帮助各国共同解决他们的问题.”四年以后,奥林匹克运动会将在中国举行.中国已经有了一个密封（印章）为北京2008奥运会的会徽.会徽有一个单一的汉字（汉字）上的红色印章,意思是“中国印–舞动的北京”.在它的下面,有“北京2008”.字符的标志是“经”.它的意思是“资本”的中国,它还像一个运动员或一个舞者.运行图（人形）的徽章展示奥林匹克精神–更快,更高、更强.
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