A:no stronger tha
B:so strong a
C:stronger tha
D:strongest of
-- Could you tell me __________ yesterday?
-- Because my bike was broken on my way here.
下图中某商品的需求曲线(D)与供给曲线(S)相交于E点(市场均衡点),PE为均衡价格,QE为均衡数量。据此判断下列变化中能使E点向右下方移动的是 ( )