下列哪项概括了眩晕发生的病机
A．痰、热、风、湿
B．风、火、痰、虚
C．火、气、血、虚
D．风、痰、气、血
E．风、火、血、虚
参考答案：B
Would you like _____ your mother cook supper? [ ]
A. helping
B. to help
C. help
D. helping
