同一种商品在市场上出售,它的价格忽高忽低,造成这一现象的直接原因是()
A.商品供求关系的变化
B.商品价值的变化
C.价值规律的作用
D.买卖双方讨价还价
参考答案:A
The web is fantastic at many things—e-mail, e-commerce, for example. But ________ your name is Amazon or Google, making money has proved hard.
A.if
B.unless
C.although
D.as long as
荆防颗粒除能发汗解表外,又能
A.理气散寒
B.散风祛湿
C.疏风清热
D.清热解毒
E.降逆平喘