摘要:This is a diagram about the population of the world. 36 the diagram we know the population of the world grew quite 37 before 1800.But during the last two 38 years it has grown very 39 .In 1800, the number of 40 in the word was nine hundred million.But 41 October 12th , 1999, the population had 42 six billion.Today, it is still 43 faster than ever before.New research shows that more than 2.6 44 will be born in one 45 in the world.As it goes on, the population of the world 46 seven billion by the year 2010.That 47 we must grow much more food to 48 all the people.Do you know what will 49 in six hundred years? Yes, by then we will have only 50 room on earth.

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