既能息风止痉，又能祛风湿，止痹痛的药物是（）

A.羚羊角

B.地龙

C.钩藤

D.天麻

E.珍珠

--- Did you hear someone talking in the living room?

--- Oh, I forgot to ____ the TV just now.

A．switch off

B．switch on

C．turn on

D．switch over