题目

—”Could we put off the meeting？”She asked w*w*w*k*s*5*u*c*o*m  —”       “he answered politely；”This is the only day everyone is available. A.Not likely        B.Not exactly       C.Not  nearly    D.Not really   答案：D金属的锈蚀给人类带来巨大的损失．铁生锈与    、水等物质共同作用的结果．生成生活中常用的铁制品防锈方法有    （答一条即可）；而性质活泼的铝在空气中不易锈蚀的原因是    ．