A：12
B：-12
C：32
D：-32
____ ____ ____ people start to take part in this activity.
The students stopped talking__________ the teacher came into the classroom.
—You ______ be joking. It's impossible.
近代史上，顽固派“其貌则孔也，其心则夷也”的指责主要针对下列哪位人物的思想主张（ ）
