肩关节脱位的主要体征是______

A．“4”字试验阳性

B．伸肌腱牵拉试验阳性

C．搭肩试验阳性

D．直腿抬高试验阳性

E．压头试验阳性

Which of the following statements about the basic functions of money is TRUE（）

A. When money is defined as a medium of exchange, it means that money enables value to be stored and transported.

B. Money’s value is directly related to the level of prices.

C. Money’s function as a unit of account allows individuals to account for debts.