题目

世界上的人口不能无节制地增长，人口增长过快可能产生的后果是( ) A . 国防兵源不足 B . 劳动力短缺 C . 人口老龄化严重 D . 资源短缺 答案：D______the heavy rain, we ______the town.A．But for; should have reachedB．Because of; would have reachedC．During the period of; we would reachD．In spite of; we should have reached