A:在空气中金属铝表面迅速氧化形成保护膜
B:常温下,铁被浓硫酸“钝化”形成保护膜
C:在潮湿的空气中钢铁易生锈
D:在潮湿的空气中过氧化钠易变质
我国最大的工业城市是 ( )
—I haven't been to the science museum for a long time. What about you? — . ________ Could you go with me this weekend?