题目

青铜是人类最早使用的铜、锡合金，下列说法中不正确的是 A．青铜属于纯净物                B．青铜属于金属材料C．青铜的硬度比铜大              D．青铜耐腐蚀，易铸造成形 答案：AThe magazine ________ Lily’s, because we can find her name on its cover.A. maybe B. may be C. must be D. can be