第29题: [单项选择](It can be argued) that the problems, even something (as fundamental as) the (ever-increased) world population, have been caused by (technological advance). A. It can be argued B. as fundamental as C. ever-increased D. technological advance 参考答案:C 答案解析:改为ever-increasing 现在分词通常用来表示主动,而过去分词则表示被动。population与increase间是主动关系,所以应改为ever-increasing。