A:三国协约
B:三国同盟
C:轴心国集团
D:法西斯党
给出下列表达式:①a(b+c)=ab+ac;②﹣2<0;③x≠5;④2a>b+1;⑤x2﹣2xy+y2;⑥2x﹣3>6,其中不等式的个数是____
I'm considering______a teacher after graduation because a teacher is often considered______the engineer of human souls.