20xx年6月段家峡节水改造项目可研报告(编辑修改稿)内容摘要:
I jum p from spaceshi p and as I fal I turn, di ve, ci rcl e and dance until I softl y land as cl ose as I can to the fini shi ng li ne. Robot petiti ons i n the 23rd century are trul y a popul ar sport. Fans from al over Chi na watch thei r handhel d TVs when a petiti on es on. Last tim e I l ook part i n the 78th Ol ym pic on a fl yi ng i sl and above Brussel s i n the sky. I won the si ver m edal for m y performance . Thi s year I had the honour to be chosen agai n . I wanted to mm et robots from other countyi es and expl ore i des about our ower ,m y programm er fel l il l the week before we were goi ng to l eave . It was very pai nful for her and I fel t very fri ghtened. I no l onger fel t so confi dent that I woul d wi n. The day of the peti ti on was rather coul d for m y l egs and my speci al oil began to fteeze. I paused before I jum ped from the starti ng pl ace on a l ittle spaceship but then I began m y performance. At the corect m om ent I tri ed to open m y parachute but there was a probl em . It onl y opened a l i tl e .In stead of fl ying softly to earth I began to fal faster and faster so that I coul d not turn , di ve,ci rcl e or dance. My heart stopped beati ng as I l anded heavi ly on a m ountai n covered wi th snow. Thi s i s why I am wri ti ng to you from m y hospi tal bed with two broken legs and a fragil e head. I di d not wi n anythi ng at the Ol ympi c after al l. I need the factory to build me two new legs and an even bigger head. Then I will be able to pete once more . Let’s hope foe greater success in the next Ol ympi cs! Uni t 4 (1) How Daisy l earned to hel p wil dli fe Dai sy had al ways longed to hel p endangered speci es of wil dli fe. O ne day she woke up and found a fl yi ng carpet by her bed.“Where do you want to go?”it asked. Daiasy responded immediately.“I’d like to see some endangered wildlife,”she said.“please take me to a distant land where I can fi nd the anim al that gave fur to m ake this sweater. ”At once the carpet flew away and took her to Tibet. There Daisy saw an antelope looking sad. It said,“We are being kil ed for the wool beneath our stom achs. Our fur i s bei ng used to make sweaters for peopl e l ike you . As a reasul t, we are now an endangered species.”At that Daisy cried,“I’m sorry I didn’t know that. I wonder what is being done to help you. Flying carpet,please show me a place where there’s some wildlife protection.” The fl yi ng carpet travel ed so fast that next mi nute they were i n Zimbabwe. Daisy turned around and found that she was being watched by an elephant. “H ave you e to take my photo?”it asked. In relief Daisy burst into laughter.“Don’t laugh,”said the elephant,“We used to be an endangered species. Farmers hunted us without m ercy. They sai d we destroyed their farms, and m oney from touri sts onl y went to the l arge tour pani es. So the governm ent deci ded to hel p. They al owed tourists to hunt onl y a certai n num ber of anim al s i f they pai d the farm ow the farm ers are happy and our numbers are increasing. So good things are being done here to save local wildlife.” Daisy smiled. “That’s good shows the importance of wildlife protection,but I’d like to help as the WWF suggests.”The carpet Rose agai nst and alm ost at once they were in a thi ck rai nforest. A m onkey Watched them as it rubbed itself.“What are you doing?”asked Daisy. “I’m protecting myself from mosquitoes,”it replied. “When I fi nd a m il pede i nsect, I rub it over m y body. It contai ns a powerful drug whi ch affect m osqui toes. You shoul d pay more attenti on to the rai nforest where I li ve and appreci ate how the animals live together. No rainforest,no animals,no drugs. ” Daisy was amazed. “Flying carpet, pl ease take m e hom e so I can tel WWF and we can begi n produci ng this new drug. Monkey,please e and help,”The monkey agreed. The carpet flew home. As they landed,things begin to disappear. Two minutes l ater everythi ng had gone the m onkey,too. So Dai sy was not abl e to make her new drug. But what an experi ence!She had l earned so m uch!And there was always WWF …… (2)Anim al exti ncti on Many anim al s have di sapeared duri ng the l ong hi story of the earth. The m ost fam ous of these anim al s are di nosaurs. They l i ved on the earth tens m il li on of years ago, l ong before hum ans cam e i nto bei ng and thei r future seem ed secure at that tim e. There were m any di fferent ki nds of dinosaur and a num ber of them used to l i ve i n chi na. The eggs of twentyfi ve speci es have ben found i n Xi xi a County,N anyang,H enan provi ot l ong ago a rare new speci es of birdli ke di nosaur was di scovered i n Country,li aoning 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 cli m b trees. They learned this from the way the bones were joi ned together. Dinosaurs di ed out suddenly about 65m il li on years ago. Som e sci enti sts thi nk i t cam e after an unexpected i nci dent when a huge rock from space hi t the earth and put too m uch dust i nto the ai thers thi nk the earth got too hot for the di nosaurs to l i ve on any obody knows for sure why and how dinosaur disappeared from the earth i n such a short ti m e. We know m any other wi l d pl ants, anim al s,i nsects and bi rds have di ed out m ore recentl y. Accordi ng to a UN report , som e 844 ani m al s and pl ants have di sappeared i n the l ast 500 years. The dodo i s one of them. It li ved on the Isl and of Mauri ti us and was a very fri endly anim al. Pl ease li sten to a story of the dodo and how i t disappeared from the earth. (3) The return of the mi lu deer My name i s Li nhui .I like to tel stori es about peopl e who work i s even better is when countries hel p each other and bui ld a good friendship. An excel ent example of this happened when Bri tai n and Chi na worked together to bring the Mil u deer back。20xx年6月段家峡节水改造项目可研报告(编辑修改稿)
相关推荐
下面是把 A、 B 两个数分解质因数 :A=xyz B=mnzy ,这两个数的最大公约数是 ( ),最小公倍是 ( ). 三、 判断 (对的打 ”√ ”,错的打 ” ”8 分 ) 所有的质数都是奇数 . ( ) 能被 6 整除的数一定能被 3 整除 . ( ) 把 24 分解质因数是 :2 2 2 3=24 ( ) 同学们种了 50 棵树 ,死了 2 棵 ,成活率是 96%. ( ) 一条直线长
(结果保留根号); ③若扇形 ADC是一个圆锥的侧面展开图,则该圆锥的底面面积为 (结果保留π); ④若 E( 7, 0),试判断直线 EC与⊙ D的位置关系并说明你的理由。 6 【答案】 ( 1) ( 2) ① C( 6, 2), D( 2, 0) ② 25 ③ 54 ④相切。 理由:∵ CD=25, CE= 5 , DE=5 ∴ CD2+CE2=25=DE2 ∴∠ DCE=90176。 即
【答案】 3 7. ( 2020 山东烟台, 19,6 分) (满分 6 分)先化简再计算: 22 1 2 1xxxx x x ,其中 x是一元二次方程 2 2 2 0xx 的正数根 . 【答案】解:原式 = 2( 1)( 1) 2 1( 1)x x x xx x x =21 ( 1)xx = 11x. 解方程得 2 2 2 0xx
2)中⑥ B、 D、 E三点时,同法可求:38118ak . ∴ 12ak 或38118ak . 3. ( 2020 四川 凉山州 , 28, 12 分)如图,抛物线与 x 轴交于 A ( 1x , 0)、 B ( 2x ,0)两点,且 12xx ,与 y 轴交于点 0, 4C ,其中 12xx, 是方程 2 4 12 0xx
D 的半径 = (结果保留根号); ③若扇形 ADC 是一个圆锥的侧面展开图,则该圆锥的底面面积为 (结果保留π ); ④若 E( 7, 0),试判断直线 EC 与⊙ D 的位置关系并说明你的理由。 【答案】 ( 1) A B C O ( 2) ① C( 6, 2), D( 2, 0) ② 25 ③ 54 ④相切。 理由:∵ CD=25, CE= 5 , DE=5 ∴
和中的较大值。 03 008 012 8 a) 停电 温度 176。 C 40~ 113 .5 85~1 85~ 116 .9 整个厂区有两路电源,故不考虑厂区总变停电。 装置现有两座总变电所,一、重催高变和二、装置低配 ,主要装置供电电源分配见 11 表 2。 序 号 1 2 名称 重催高变 装置低配 表 2 装置供电电源分配表 主要排放装置 重催 重催、气分(含 MTBE 及脱硫装置)