题目

 — Just a minute, Tom. Is this the report you need to hand in today? — Oh, yes, Mum. I thought I had put        in my schoolbag. Thank you.A. everything          B. something           C. nothing             D. anything 答案：A下图表示叶绿体中色素的吸收光谱。甲、乙两图分别是（    ） A．叶绿素、类胡萝卜素的吸收光谱 B．类胡萝卜素、叶绿素的吸收光谱 C．叶黄素、叶绿素的吸收光谱 D．叶黄素、胡萝卜素的吸收光谱