After I moved to Guangzhou, it took me two months to ______ here.

A．be used to live

B．use to live

C．used to living

D．get used to living

青蒿抗疟的有效成分为()

A．青蒿素

B．青蒿酸

C．青篙醇

D．青蒿内酯

E．挥发油