主要用于控制复发和传播的抗疟药是()
A．奎宁
B．青蒿素
C．乙胺嘧啶
D．伯氨喹
E．周效磺胺
参考答案：D
_____ does he do sports every day? He does sports for two hours every day. [ ]
A. How many
B. How often
C. How long
D. When
按照借贷关系持续期内利率水平是否变动，贷款利率可分为( )。
A．固定利率和浮动利率B．法定利率和公定利率C．基准利率和市场利率D．法定利率和市场利率
