题目

阅读填空 I'll never forget the first day at school. It has left a deep1 on me. The primary school that I attended was not far from my home. As soon as I rushed into the classroom, the bell 2 . A young beautiful woman came in, but she was 3 , with no smile on her face. You are not permitted to 4 me in the course of class unless... She was speaking when I heard a 5 Lily, Lily from outside the door.My grandmother was standing there with a pair of socks in her hand. I didn't realize I was bare feet 6 then. I wanted to 7 them. But I dared not do that. I shook my hand, 8 Don't wait here any lon重金属的毒性，主要是由于它与人体内酶中的巯基（—SH）结合而产生的。误食重金属盐后，可尽快喝适量牛奶或鸡蛋清解毒。牛奶和鸡蛋清富含的营养素是A．蛋白质 B．糖类 C．油脂 D．维生素