盐酸昔鲁卡因在碱性溶液中的水解产物加盐酸酸化后，产生的白色沉淀是
A．普鲁卡因B．对氨基苯甲酸C．对氨基水杨酸D．水杨酸E．对氨基酚
参考答案：B
How we express our ideas sometimes means more than _____ we mean to say.[ ]
A. what
B. which
C. that
D. why
切削运动
