Prices of food and clothing and almost everything else in the country have steadily gone up. As a result, the buying ______ of the dollar has gone down.

A．capacity

B．competency

C．power

D．value

对焦虑型、夜间醒来次数较多或早醒者可选用（）。

A.艾司唑仑

B.氟西泮

C.氯美扎酮

D.谷维素

E.夸西泮