【正文】 the West Pacific, there are droughts affecting Australia and Indonesia. So while some parts of the world prepare for heavy rains and floods, other parts face drought, poor crops and 51 .　　EI Nino usually lasts for about 18 months. The 198283 EI Nino brought the most 52 weather in modern history. Its effect was worldwide and it left more than 2,000 people dead and caused over eight billion pounds 53 of damage. The 1990 EI Nino lasted until June 1995. Scientists 54 this to be the longest EI Nino for 2,000 years.　　Nowadays, weather experts are able to forecast when an EI Nino will 55 , but they are still not 56 sure what leads to it or what affects how strong it will be.　　其選項(xiàng)如下：　　A) estimate?！　) tropical?！　) pletely?！　) exhaustion。我們要學(xué)會(huì)每種詞匯的基本搭配和基本用法。遇到名詞要確定單數(shù)還是復(fù)數(shù)?！　。瑫簳r(shí)擱置，不必糾纏，影響全局?！　∫哉骖}為例辨詞性　　A) estimate。　　E) tropical?！　) pletely。　　M) exhaustion?！【C合解題　　將選項(xiàng)分類之后，就得從文章中來尋找對應(yīng)的線索了?！　「鶕?jù)一句(包括從句)有且只有一個(gè)謂動(dòng)的原則，其它地方如無謂語動(dòng)詞，則需要謂語動(dòng)詞。)　　54. A estimate　　一個(gè)完整的句子之后再跟逗號，后面一般是非謂語動(dòng)詞短語。)　　52. J destructive　　副詞修飾形容詞或動(dòng)詞　　…, but they are still not 56 sure what leads to it or what affects how strong it will be.(修飾形容詞sure, 當(dāng)為副詞)　　56. I pletely　　謂語動(dòng)詞前有名詞主語　　This strange 47 happens every five to eight years.　　(happens是謂語動(dòng)詞，也可知前面為名詞短語，缺一個(gè)核心名詞。所以先看它被誰修飾，與誰形成主謂賓關(guān)系。C.　　此句有一個(gè)狀語從句，as表示的時(shí)間或因果關(guān)系，是重要的解題線索。前面講到過的核心概念就是El Nino, 無疑是一種天氣“現(xiàn)象”。 worse/better/more/less等。往往在下文有分述。. The fire caused thousands of pounds39。s ownership of both shores of the river for at least two hundred miles north of New Orleans permitted this foreign nation to control the trade moving on the Mississippi. As a monarchy (君主政體) ，the Spanish government distrusted the rising spirit of democracy in the United States, especially the much freer expression of democracy that existed among the western farmers. This distrust of democracy resulted in the desire of the Spanish to deny the use of the great river to any Americans. The reaction was instantaneous (瞬間的 ) and furious, western farmers raised their voices to protest and the United states sent John Jay to Madrid to discuss this matter. In 1795 this conflict was settled. Spain consented to allow citizens of the United States the right to use the lower Mississippi River and also the right of deposit at New Orleans, the right of deposit permitted American farmers, without a duty charge, to remove their products from smaller boats at New Orleans after having navigated down the Mississippi, and then to transfer the agricultural modities to larger oceangoing vessels.　　For the succeeding five years this agreement was observed and little conflict existed. On October 1, 1800, however, Spain signed a treaty giving the ownership of the Louisiana territory back to France. The news of this treaty did not reach Jefferson until May of the following year. As soon as he became aware of the change in ownership of the territory, Jefferson realized that this was part of a plan by which Napoleon hoped to establish France as a great power in the New World. Although Napoleon still permitted Spain to remain in control of the port of New Orleans, the future threat to the navigation rights of the western farmers still remained. At any moment, Napoleon might send troops to the Gateway and forbid Americans to use it for navigation. This would affect almost forty per cent of the total export trade of the United States. By April 1802 Jefferson39。s eloquence persuaded Marbois to accept an unreasonably low price for the Louisiana territory.　　8. Louisiana was sold to the U. S, for______francs.　　9. The Federalists in the East of U. S. were in favor of declaring war on Spain because they wished to______of President Jeffers