Mike _________ English, but now he is better at it than _________ in his class.

A．is used to hate; any student

B．used to hate; the other students

C．is used to hating; all the other students

D．used to hate; all the students

目前，我国实施的人民币汇率制度是( )。

A．固定汇率制

B．弹性汇率制

C．钉住汇率制

D．管理浮动汇率制