标签：话题作文 话题 英语四级作文
字数：1500字
提要：The Problem of Human PopulationDirections: For this part, you are allowed 30 minutes to write a composition based on the following graph showing the growth of the world＇s population. The opening sentenee is given and you are required to develop it into a full composition. Your part of writing should be no less than 120 words. Some useful words and phrases are provided, but you do not have to incl..