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[by:喜欢tingclass.net,请把tingclass.net告诉你QQ上的5位好友,多谢支持!] [00:00.00]听力课堂网 UNIT 7 [00:03.21]Lesson 49~56 [00:07.86]Know Your World [00:11.23]Lesson 49: [00:14.79]The World Is a Big Place!Let's learn some geography! [00:21.55]Geography is the study of the world's places and population. [00:28.71]How many people are there in the world? [00:33.28]In the year 2000,the world's population was about six billion people. [00:41.14]That's 6,000,000,000By 2025, [00:53.29]sicientists predict the world will have 7.8 billion people. [01:00.55]By 2050,there will be 9.1 billion people. [01:08.49]Where do all the people live?People live on land. [01:14.66]About one-third of the world is land. [01:19.62]There are seven continents:Africa,Asia,Australia,Europe,North America, [01:30.17]South America and Antarctica. [01:35.14]Antarctica is the world's coldest and the world's driest continent. [01:42.69]How many deserts does the world have? [01:47.26]Not all land is good for people.Some land is too dry. [01:55.02]This land is called desert. [01:59.17]Deserts cover one-fifth of the earth's surface. [02:04.81]How big are the world's oceans? [02:09.38]The world really has one big ocean, [02:15.13]but we have names for different pieces of it. [02:21.01]There are four main oceans:the Pacific Ocean,the Atlantic Ocean, [02:28.87]the Indian Ocean and the Arctic Ocean. [02:33.94]Oceans cover about three-quarters of the earth's surface. [02:40.29]What's the world's biggest island? [02:44.55]The world's biggest island is Greenland. [02:49.27]Greenland is northeast of Canada.What's the world's longest river? [02:57.53]The Nile River in Africa is the longest river.
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