题目

He _______ busy yesterday, or he ___ you with your experiment. A was, had helped                  B was , would have helped C. had been, would had helped        D had been, would help 答案：B下列图示与对应的叙述不相符合的是A．图甲表示强碱滴定强酸的滴定曲线B．图乙表示酶催化反应的反应速率随反应温度的变化C．图丙表示弱电解质在水中建立电离平衡的过程D．图丁表示燃料燃烧反应的能量变化