There are ______ people and ______ noise here. I can’t stand it.
A:too much; too many
B:too; too
C:much; many
D:too many; too much
对于x∈R,不等式|x﹣1|+|x﹣2|≥a2+b2恒成立,试求2a+b的最大值.
“酒后驾驶机动车”作为“危险驾驶罪”已被列入刑法,为了让大家知道“酒后驾车”的危害,请你设计一条宣传标语。