托福聽力原文聽寫：海岸線的腐蝕.docx

智課網(wǎng)TOEFL備考資料托福聽力原文聽寫：海岸線的腐蝕 摘要： 聽寫是托福聽力備考的首要方法，無論什么英語水平的考生都可以采用這種方法來有效提高聽力，網(wǎng)絡(luò)上雖然能找到很多聽力的音頻但是原文卻不多，因此小編為大家?guī)砹送懈Ｂ犃υ穆爩懀汉０毒€的腐蝕，大家可以根據(jù)這個(gè)題目去搜索相關(guān)音頻來練習(xí)。 驚喜天天送!掃描二維碼獲取 小馬 免費(fèi)資料包： 托福 聽力考試必背段子匯總PDF格式 點(diǎn)擊查看掃描二維碼的方法 Questions：47 through 50 Listen to a geologist giving a lecture to an engineering class. Your professor has asked me to talk to you today about the topic that should be of real concern to civil engineers：the erosion of the United States beaches.Let me start with some statistics.Did you know that 90 percent of the coast in this country is eroding，on the gulf of Mexico for instance，erosion averages 4 to 5 feet per year.Over the past twenty years，there has been an increase in building along the coast，even though geologist and environmentalist have been warning communities about problems like erosion.Someway communities have tried to protect their buildings and roads and to build seawalls.However geologists have found that such stabilizing structure actually speed up the destruction of the beaches.These beaches with seawalls，called stabilized beaches，are much narrower than beaches without them.You may wonder how seawalls speed up beach loss.The explanation is simple.If the flow of the beaches is gentle，the water energy is lessened as it washes up along the shore.It is reduced even more that returns to the sea so it doesnt carry back much sand.On the other hand，when the water hit the nearly vertical face of the seawall，it goes straight back to the sea with the full force of its energy and it carries back a great deal of sand.Because of the real risk of losing beaches，many geologists support a ban on all types of stabilizing construction on shore lines. 托福聽力 備考需要大量的材料和練習(xí)題，為了給考生們節(jié)省尋找資料的時(shí)間，我們特別將常用的托福聽力資料整理出來提供給大家，本文分享的托福聽力原文聽寫：海岸線的腐蝕就是其中之一，如果您還需要更多類似內(nèi)容可以隨時(shí)點(diǎn)擊下面的下載按鈕免費(fèi)獲取。 相關(guān)推薦: 托