A.I1=I2
B.I1>I2
C.I1<I2
D.无法确定
答案:A
在影响供给量的诸多因素中,()是最灵敏、最重要的因素。
A.价格
B.成本
C.税收
D.消费
Why can’t many stars be seen
A. They are too small. B. They are too bright. C. They are too far away.