hdpe双壁波纹管生产线项目可行性研究报告(编辑修改稿)

hdpe双壁波纹管生产线项目可行性研究报告(编辑修改稿)内容摘要：

s one seri ous short i ng. She can be real y stubborn. Al though she di dn39。 t know the best way of geti ng to places, she insi sted that she ani ze the tri p properl y. N ow, I know that the proper way i s al ways her way. I kept aski ng her, When are we l eavi ng and when are we i ng back? I asked her whether she had l ooked at a m ap yet. O f course, she hadn39。 t。 my si ster doesn39。 t care about detai ls. So I tol d her that the source of the Mekong is i n Qinghai Provi nce. She gave m e a determi ned l ok—the ki nd that sai d she woul d not change her m i nd. When I tol d her that our journey woul d begi n at an al ti tude of m ore than 5, 000 m etres, she seem ed to be exci ted about it. When I tol d her the ai r woul d be hard to breathe and it woul d be very col d, she sai d i t woul d be an i nteresti ng experi ence. I know m y si ster wel l. O nce she has m ade up her m i nd, nothing can change i t. Fi nal l y, I had to gi ve in. Several m onths before our tri p,Wang Wei and I went to the l i brary. We found a l arge atl as with good m aps that showed detai l s of worl d geography. From the atl as we coul d see that the Mekong River begi ns i n a glaci er on a Ti betan m ountai n. At fi rst the ri ver i s smal and the water is cl ear and cold. Then i t begi ns to m ove qui ckly. It bees rapids as it passes through deep val leys, travel ing across western Yunnan Provi nce. Someti mes the ri ver be es a waterfal l and enters wi de val leys. We were both surpri sed to l earn that hal f of the ri ver is i n Chi na. After i t l eaves Chi na and the hi gh alti tude, the Mekong bees wi de， brown and warm. As it enters Southeast Asi a, its pace slows. It m akes wide bends or meanders through l ow val leys to the pl ains where ri ce grows. At last, the river del ta enters the South China Sea. PART2 A NIGH T IN THE MOUNTAINS Although i t was autumn,the snow was already beginni ng to fal i n Tibet. Our l egs were so heavy and cold that they felt l ike bl ocks of i ce. Have you ever seen snowmen ride bicycl es?That’s what we l ooked like! Al ong the way chil dren dressed in l ong wool coats stopped to l ook at the l ate afternoon we found it was so cold that our water bottles owever, the l akes shoneli ke gl as i n the setti ng sun and looked wonderful . Wangwei rode i n front of m e as usual. She i s very rel iabl e and I knew I didn’t need to encourage her. To clim b the m ountai ns was hard work but as we l ooked around us, we were surpri sed by the vi ew. We seem ed to be abl e to se for m il es. At one poi nt we were so hi gh that we found ourselves cycli ng through cl ouds. Then we began goi ng down the hi l s. It was great fun especi al ly as it gradual y becam e m uch warm er. In the val l eys col ourful butterfli es fl ew around us and we saw many yaks and sheep eati ng gren grass. At this poi nt we had to change our caps, coats, gl oves and trousers for Tshi rts and shorts. In the earl y eveni ng we al ways stop to m ake cam p. We put up our tent and then we eat. After supper Wang Wei put her head down on her pi l ow and went to sleep but I stayed awake. At m i dni ght the sky becam e cl earer and the stars grew bri ghter. It was so quiet. There was alm ost no wi nd—only the fl am es of our fi re for pany. As I l ay beneath the stars I thought about how far we had already travel l ed. We wil l reach Dali i n Yunnan Provi nce soon, where our cousi ns Dao Wei and Yu H ang wil joi n us. We can hardl y wai t to see them! PART 6 TH E END OF OUR JOUNEY Cam bodi a was i n m any ways simi l ar to Laos, al though i t has twi ce the popul ati on. At another inn, we tal ked wi th a teacher who tol d us that hal f of the peopl e in her country coul dn’t read or write. H er vil age coul dn’t even afford to buil d a school , so she had to teach outside under a l arge tent. When we said goodbye, we al l felt very l ucky to have studi ed i n col ege. Back on the road, we pased between m any hil s and forests. Then we cam e to the pl ai ns and entered Phnom Penh,the capi tal of Cam bodi a. In m any ways i t l ooked li ke Vi enti ane and H o Chi Mi nh Ci ty。 i t al so had wi de streets with trees i n rows and ol d French houses. Unli ke Vi enti ane, shi ps coul d travel the Mekong River here. In the center of the ci ty we vi sited the pal ace and a beautiful whi te el ephant. It can onl y be seen outsi de the pal ace on speci al days. We ate an earl y supper and went to see a great tem pl e wi th floors made of sl i ver. The next m orni ng our group sl ept l ate. We were very ti red from the l ong bi ke ri de the day before. Cycl ing i n the hi l s had been di ffcui ow our coui ns had the chance to make jokes about Wangwei and m e. Perhaps, they sai d, they were the strong ones!We had lunch at a ni ce outdoor cafe, then rode out of the ci ty. Two days l ater we crossed the border into Vietnam. We began to see many more peopl e,but I wasn’t surprised . I read in an atl as before our trip that Vi etnam has al m ost seven tim es the popul ati on of Cam bodi a. We met a farm er who gave us di recti ons and tol d us that he grows a new ri ce crop four tim es every year so he can feed m ore peopl e. H e al so tol d us that the northern part of hi s country has m any m ountai ns and i t i s m uch col er than here i n the south, where it i s fl at. Al though the fl at delta m ade it easi er for us to cycle. we got warm very qui ckl y. So we drank l ots of water and ate l ots of bananas. Soon the del ta separated i nto ni ne sm al l er ri vers. Two days l ater, after we had passed thousands of ri ce fi el ds, we cam e to the sea. We were ti red but al so i n hi gh spiri ts: our dream to cycl e al ong the Mekong Ri ver had fi nal l y e true. Uni t 4 A NIGHT THE EARTH DID’T SLEEP Strange thi ngs were happeni ng in the countrisi de of northest H eBei . For there days the water in the vi l age wel s rose and fel , rose and fel .。