Many relevant problems____ when prices of daily goods _____ sharply, which is beyond the

ordinary people's buying capacity. [ ]

A. rise; arise

B. raise; arise

C. arise; rise

D. arise: raise

商品价值决定价格，但是市场上经常发生商品价格与价值相背离的情况，其主要原因是

A．卖商品的人想多赚钱

B．买商品的人想少花钱

C．买卖双方讨价还价

D．商品的供求不平衡