题目

________ surprised me most was the news ________ our team won. A . That; that B . What; which C . What; that D . That; which 答案：C下列说法错误的是(   ) A．火箭推进器的反应N2H4+2H2O2=X2+4H2O中X2为N2 B．某镍氢电池(NiOOH中氧元素为-2价)反应H2+2NiOOH=2Ni(OH)2中Ni的化合价由+3价变为+2价 C．炼钢就是把生铁中的碳、硫、磷全部除去 D．用灯帽盖熄酒精灯火焰的原理是隔绝空气