题目

富营养化对太湖造成的影响主要有 A．早期使湖水中水生植物大量减少  B．使鱼类皆因中毒而大量死亡 C．可能使太湖湖床变高，甚至沼泽化  D．使太湖的水产养殖业更加发达 答案：C 解析: 略29、She had golden hair when she was young, but ________ she got older and older, her hair went darker and darker.     A．while                 B．when                 C．with                  D．as