化学与科学、技术、社会、环境密切相关，下列有关说法正确的是（ ）
| A．人造纤维、合成纤维和光导纤维都是有机高分子化合物 |
| B．加热能杀死甲型H1N1流感病毒是因为病毒的蛋白质受热变性 |
| C．棉、麻、丝、毛燃烧后都只生成CO2和H2O |
| D．食品添加剂种类很多，其中的一种为苯甲酸钠，它是苯的一种同系物所对应的钠盐 |
相关试题
My friend showed me round the town, ______ was very kind of him. 
| A．which | B．that | C．where | D．it |
They use computers to keep the traffic _______ smoothly.
| A．being run | B．run | C．to run | D．running |
If you leave the club, you will not be_____back in .
| A．received | B．admitted | C．turned | D．moved |
What I need is_____ book that contains ______ABC of oil painting.
| A．a; 不填 | B．the; 不填 | C．the; an | D．a ; the |
粤公网安备 44130202000953号