红水河，为西江上游的别称，流域内山岭连绵，地形崎岖，水力资源十分丰富，它的梯级开发已被我国列为国家重点开发项目。读“珠江流域概况图”，回答问题.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
红水河水电梯级开发对珠江三角洲地区的影响主要有

A．满足用电需求的增长

B．加剧珠江三角洲的洪涝灾害

C．改善大气环境质量

D．不易出现淤积减慢或侵蚀后退

下列符合红水河流域综合开发利用方向的是：

A．微电子工业

B．有色金属冶炼工业

C．发展木材加工和制药工业

D．发展甜菜、花卉等城郊农业