— Which do the young people prefer, music or sports?

 — Both. Music is _____ sports among them. [ ]

A. as popular as

B. not as popular as

C. more popular than

D. less popular than

生产、生活、医疗卫生等都离不开化学知识。下列说法错误的是

A．在硬水中，肥皂的去污能力减弱

B．世界各国流通的硬币材质一般都是合金

C．水泥、合成橡胶和人造纤维都属于有机高分子材料

D．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