标签：话题作文 话题 考研英语作文
字数：2000字
提要：The World' s PopulationThe first fifty years of the next millennium will be critical for the world's population. By 2050 population growth should have leveled off, but by then we'll have 10 billion people--two-thirds as many again as we have today.The rate of population growth is something we can choose right now, though: it's not something that just happens, but a matter of human choice. The choi..