题目

下列关于铁及其化合物的描述中，正确的是 A．铁的硬度很小                     B．铁可以被磁铁吸引 C．Fe在O2中燃烧生成Fe2O3               D．常温下，Fe与浓硫酸不反应 答案：B  —Please give this note to John.—OK， I'll give it to him as soon as he_________.A. is coming backB. will come back C. comes back