【正文】 e earth tens m il i on of years ago, long before hum ans cam e into bei ng and thei r future seem ed secure at that ti m e. There were m any di fferent ki nds of di nosaur and a num ber of them used to l i ve i n chi na. The eggs of twentyfi ve species have been found i n Xi xi a County,N anyang,H enan provi ot l ong ago a rare new speci es of birdl i ke di nosaur was di scovered i n Country,l i aoni ng Provi nce. When sci enti sts i nspected the bones, they were surpri sed to fi nd that these di nosaurs coul d not onl y run l i ke the others but al so clim b trees. They l earned thi s from the way the bones were joi ned together. Di nosaurs di ed out suddenl y about 65mi l i on years ago. Som e sci entists think i t cam e after an unexpected i nci dent when a huge rock from space hi t the earth and put to m uch dust i nto the ai r. O thers thi nk the earth got too hot for the di nosaurs to li ve on any m obody knows for sure why and how di nosaur di sappeared from the earth i n such a short tim e. We know m any other wil d pl ants, anim al s,i nsects and birds have di ed out m ore recently. Accordi ng to a UN report , som e 844 anim al s and pl ants have disappeared i n the l ast 500 years. The dodo i s one of them . It l i ved on the Isl and of Mauriti us and was a very fri endl y anim al .Pl ease l i sten to a story of the dodo and how it di sappeared from the earth. (3) The return of the mi l u deer My nam e i s Li nhui .I l i ke to tel l stori es about peopl e who work i s even better i s when countri es hel p each other and buil d a good fri endshi p. An excel l ent exam pl e of thi s happened when Bri tai n and Chi na worked together to bri ng the Mil u deer back to Chi na. The Mil u deer, a speci es wi th large horns, used to be m on i n Chi na l ong ke other deer they li ve together and eat grass and the soft parts of trees such as smal branches. Mi l u deer were often hunted for food or sport i n the past. The , Mi ng and Qi ng dynasti es di d not protect them and m any were kil l ed. That is how the Mi l u deer di sappeared from Chi na. Lucki l y before al l of them were ki l ed,some were taken to Bri tain to im prove the envi ronm ent of the beauti ful park whi ch bel onged to the Duke of Bedford. H e li ked them so m uch that he took them al l the way from Chi na to Bri tai n. The Mil u der l i ked the cool , wet weather i n Engl and and thei r num ber i ncreased year by year. As a result, when in 1985 the governm ent of Chi na wanted to rei ntroduce the Mil u deer,the Duke of Bedford was happy to hel p. The fi rst deer cam e back to Chi na to the N anhai zi Mil u Park 20 ki l om eters south of Bei ji ng and the centre i n Dafeng, Ji ngsu Provi nce. The deer centai nl y seem happy to be back i n Chi na because thei r num bers have grown rapi dl y. There are now so m any of them that a new park has been opened for them i n H ebei Province. At the mom ent the Mil u der l ive i n centres where they are bei ng 一、全冊(cè)教材分析 六年級(jí)第二學(xué)期是小學(xué)階段最后一個(gè)學(xué)期，教材從促進(jìn)學(xué)生的發(fā)展，為學(xué)生進(jìn)入第三學(xué)段的學(xué)習(xí)打好基礎(chǔ)出發(fā)，把六年級(jí)（下冊(cè)）的教學(xué)內(nèi)容分成兩部分編排。在前二個(gè)單元里教學(xué)新知識(shí)，全面完成《標(biāo)準(zhǔn)》規(guī)定的第二學(xué)段的教學(xué)內(nèi)容和具體目標(biāo)。 新授內(nèi)容仍然分二個(gè)領(lǐng)域安排。是本冊(cè)教材的重點(diǎn)內(nèi) 容之一。根據(jù)《標(biāo)準(zhǔn)》的精神，教材適當(dāng)加強(qiáng)了正比例關(guān)系圖像的教學(xué)，不再安排解答正比例或反比例的應(yīng)用題。這些知識(shí)有助于理解圖形的放大與縮小，能用來(lái)解決有關(guān)比例尺的問(wèn)題。轉(zhuǎn)化能使復(fù)雜的問(wèn)題變得簡(jiǎn)單，能把未知的內(nèi)容變成已知的內(nèi)容。對(duì)于轉(zhuǎn)化思想，學(xué)生在前面的學(xué)習(xí)中已經(jīng)有較豐富的體驗(yàn)。 “ 空間與圖形 ” 領(lǐng)域：教學(xué)圓柱和圓錐，圖形的放大或縮小，確定位置等內(nèi)容。圖形的放大和縮小是小學(xué)數(shù)學(xué)新增加的教學(xué)內(nèi)容，讓學(xué)生初步了解圖形可以按一定的比例發(fā)生大小變換。確定位置也是新增的教學(xué)內(nèi)容，在初步認(rèn)識(shí)方向的基礎(chǔ)上，用 “ 北偏東幾度 ”“ 南偏西幾度 ” 的形式量化描述 物體所在的具體方向，還要聯(lián)系比例尺的知識(shí)，用 “ 距離多少 ” 的形式描述物體所在的位置。 總復(fù)習(xí)的內(nèi)容也按四個(gè)領(lǐng)域編排。把解決實(shí)際問(wèn)題納入數(shù)的運(yùn)算、式與方程兩個(gè)部分，突出數(shù)學(xué)知識(shí)的實(shí)際應(yīng)用。小學(xué)階段的測(cè)量主要是線(xiàn)段的長(zhǎng)度、圖形的面積、物體的體積，教材把測(cè)量的內(nèi)容與圖形的認(rèn)識(shí)有機(jī)結(jié)合起來(lái)，能提高復(fù)習(xí)的效率。在總復(fù)習(xí)里還安排了上述三個(gè)領(lǐng)域內(nèi)容的綜合應(yīng)用，分別研究住房面積的變化、旅游費(fèi)用的預(yù)算、調(diào)查周any longer. However, this reali ty al so worri ed m y desi gners. As ti me went by, I was m ade sm al er . First as a PC(personal puter)and then as a l aptop, I have been used i n offi ces and hom es si nce the 1970s. These changes onl y becam e possi bl e as m y m em ory im proved. First i t was stored in tubes,then on transistors and l ater on very sm al chi ps. As a resul tI total y changed m y shape . As I have grown ol der I have also grown sm al l er . Over tim e m y m em oryhas devel oped so m uch that , li ke an el ephant, I never frt anythi ng I have been tol d !And my memory became so large that even I couldn’t believe it!But I was always so lonely standing there by myself,until in the 1960s they gave m e a fami l y connected by a work . Iwas abl e to share m y knowl edge wi th others through the Worl d Wi de Web. Si nce the 1970s m any new appli cati ons have been found for m e . I have bee very i mportant i n m uni cati on, fi nance and trade I have al so been put i nto robots and used to m ake m obi le phones as wel l as hel p with m edical operati ons. I have even been put i nto space rockets and sent to expl ore the Moon and Mars . A nyhow, m y goal i s to provi de hum ans wi th a li fe of hi gh quali ty. I am now trul y fi l ed wi th happi ness that I am a devoted fri end and hel per of the human race ! AN DY—TH E AN DRO ID I’m part of an an android football team . About once a year we are allowed to get together to play a game of footbal. I’m as big as a human . In fact ,I look like one the fotbalteam I’m a striker so I have to be able to run very fast .My puter chips help me to mova and thi nk li ke a hum an . For exam pl e , I have l earned to si gnal to m y team m ates i n puter languages to give m e the bal when I am open and have a good shot for a goal . My fi rat footbal peti ti on was i n N agoya , Japan several years ago . Last year our team went to Seattl e , Washi ngton i n the won tsecong pl ace . Personal y , I thi nk the team that won fi rsy pl ace cheated . They had devel oped a new type of program just before the peti ti on. So we need to encourage our programer to i m prove our i ntel i gence are determi ned to create an even better system . In a way our programm et i s li ke our coach. She program s us wi th m oves to use i f a new