题目

情景交际。根据对话内容，选择方框内句子完成下列对话。（5分）Linda: Hi, Bruce! How was your trip?Bruce:   【小题1】   Linda: Where did you go?Bruce: I went to Qinghai with my parents. Linda:    【小题2】   Bruce: It’s one of the most beautiful cities inthe east of China. I like it very much. Linda: How long did you stay there?Bruce: For a week.    【小题3】  Linda: Which is your favorite place? Bruce:     【小题4】   When I was there, I lost myself in the beautiful scenery. Linda: What interesting things did you do there?Bruce逻辑推理是化学学习中常用的思维方法，以下推理正确的是 A．化合物都是由不同种元素组成的，不同种元素组成的物质一定是化合物 B．单质都是由一种元素组成的，所以，由一种元素组成的物质一定是单质 C．有新物质生成的变化属于化学变化，所以，化学变化一定有新物质生成 D．金属元素原子最外层电子数一般少于四个,最外层电子数少于四个的原子一定是金属元素