题目

影响我国从南到北，森林覆盖率逐渐减少的主要非生物因素是（ ） A . 水 B . 温度 C . 阳光 D . 大气 答案：A?What are you going to give your mother for her birthday? ?I'm not sure. But I'll buy her ________ . A. something special B. anything special C. special something