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1、介绍XX的英语作文3篇 美国是世界上最发达的国家，对于美国，你的了解有多少?下面，是为你的有关介绍美国的英语，希望对你有帮助! Based on historical documents, modern survey and statistics, as well as the result of prede _ssor stu _s, the trend and _in pro _ss of forest dynamics are recognized. The forest area and forest coverage rates for each provin _ of China
2、from 1700 to 1949 are es- ti _ted backward by every 50 years. Linking the result with modern National Forest Inventory data, the spatial-temporal dynamics of Chinese forest in re _nt 300 years (AD 17001998) is quantitatively _yzed. The study shows that in re _nt 300 years, the forest area in current
3、 territory of China has declined by 0.95108 hm2 (or 9.2% of the coverage rate) in total, with a trend of decrease and recovery. Before the 1960s, there was a trend of aelerated de- s _nding. The forest area was redu _d by 1.66108 hm2 (or 17% of the coverage rate) in 260 years. While after the 1960s,
4、 there has been a rapid increase. The forest area increased by 0.7108 hm2 (or 8% of the coverage rate) in 40 years. The study also shows that there is a significant spatial differen _ in the dynamics of forest. The amplitudes of increasing and de- creasing in western China are both s _ller than the
5、ones in eastern China. During the rapid declining period from 1700 to 1949, the most serious decrease appeared in the Northeast, the Southwest and the Southeast, where the coverage rate in most provin _s dropped over 20%. In Heilongjiang Provin _, the coverage rate dropped by 50%. In Jilin Provin _,
6、 it dropped by 36%. In Sichuan Provin _ and Chongqing Municipality, it dropped by 42%. In Yunnan Prov- in _, it dropped by 35%. During the recovery period 19491998, the western provin _s, mu- nicipality and autonomous regions, including Ningxia, Gansu, Inner Mongolia, Si- chuanChongqing, Yunnan, Tib
7、et, Xinjiang and Qinghai, etc, the increase rates are all below 5%, while the eastern provin _s, municipality and autonomous regions (ex _pt Heilongjiang, Hubei, JiangsuShanghai) have achieved an increase over 5%, among which the Guang- dongHainan, Guangxi, Anhui, Bei _gTian _Hebei, Shandong, Henan,
8、 Zhejiang, and Fu- jian have an increase over 10%. A history of long and effortless suess can be a dreadful handicap,but,if properly handled,it _y bee a driving for _.When the United States entered just such a glowing period after the end of the Second World War,it had a _rket eight times larger tha
9、n any pe _ ,giving its industries unparalleled economies of scale.Its scientists were the worlds best,its workers the most skilled.American and Americans were prosperous beyongd the dreams of the Europeans and Asians whose economeics the war had destroyed. It was inevitable that this pri _cy should
10、have narrowed as other countries grew richer.Just as inevitably,the retreat from predomina _ proved painful.By the mid 1980s Americans had found themselves at a losss over their fading industrial petitiveness.Some huge American industries,such as consumer electronics,hand shrunk or vanished in the f
11、a _ of foreign petitiong.By 1987 there was only one American television _ker left,Zenith.(Now there is none :Zenith was bought by SouthKoreasLGElectronics in July.)Foreign _de cars and textiles were sweeeping into the domestic _rket.Americas _chine-tool industry was on the ropes.For a while it looke
12、d as though the _keing of semiconductors,whidh America had invented and which sat at the heart of the new puter age,was going to be the next caualty. All of this caused a crisis of confidenc.Americans stopped taking prosperity ofr granted .They began to believe that their way of doing business was f
13、ailing,and that their ines would therefore shourtly begin to fall as well .The mind -1980s brought one inquiry after another into the causes ofAmericas in dustrial decline.Thir sometimes sensational findings were filled with warnings about the growing petitiong from overseas. How things have changed
14、!I1995 the United States can look back on five years of solid growth while Japan has been struggling.Few Americans attribute this Self doubt has yielded to blind pride.American industry has changed its structure ,has gone on a _t ,has learnt to be more quik witted,aording to Richard Cavanagh,executi
15、ve dean of Harvards Kennedy School of Gover _ent.It _kes me proud to be an American just to see how our businesses are improving theirproductivity,says Stephen Moore of the Cato Institute ,a think tank in Washington,DC,And William Sahl _n of the Harvard Business School believes that people will look
16、 back on this perido as a golden age of business _nagement in the United States. You are what you eat.;Nutrition experts often use this saying to promote better eating habits.What we put in our mouths does bee a part of us.But we can look at this statement another way.What we eat reflects who we are-as people and as a culture.Do you want to understand another cu
