物质概念是马克思主义哲学最基本的概念，是马克思主义哲学大厦的基石。下列对物质认识正确的有（　　）

①物质可以脱离意识而独立存在　    ②物质是对一切现象共性的反映　

③物质是运动的固有属性和存在方式  ④物质是标志客观实在的哲学范畴

A．①②

B．②③

C．①④

D．③④

He spends as much time as he can _______ English every day. [ ]

A. to practise speaking    

B. to practise to speak

C. practise to speak        

D. practising speaking