下列哪位教育家是班级授课制的反对者（）
A、雅斯贝尔斯
B、赫尔巴特
C、乌申斯基
D、夸美纽斯
参考答案：A
—What have you been busy with these days?
—I ______ that the speech contest has been brought forward, so I ______ for it.
A．was informed; have been preparing
B．have informed; am preparing
C．informed; have prepared
D．was informed; prepared
不感蒸发有何临床意义？
