一只可爱的小猫若无其事地站在一块高分子合成材料板上，板下烈火灼烧．说明该高分子材料板一定具有的性质是（ ）
A：绝热性
B：绝缘性
C：导热性
D：熔点低
通读下面的对话，然后根据上下文补全对话内容。A: Good afternoon, Miller! ____ ?B: I'm drawing a horse.A: A horse? Can you let me have a look?B: ____ . Here you are.A: Oh, the horse looks very nice. Do you often draw in your free time?B: ____ .A: Do you like drawing?B: Yes. I like drawing very much.A: ____ ?B: Because it's very interesting. And my art teacher is very kind to me.A: ____ ?B: I have an art lesson once a week.
关于南半球中低纬度洋流分布规律的叙述，正确的是（ ）
某晶体的水溶液中加入Fe2+的溶液，再加稀HNO3溶液立即变红；另取该晶体，加入NaOH溶液共热产生一种能使湿润红色石蕊试纸变蓝的气体，则这种晶体是（ ）
点M到x轴的距离为3，到y的距离为4，则点M的坐标为（ ）
