—        busy homework ,the children also have to take arts, music and sports classes in their free time.

— I wonder what they will become.

A．Rather than

B．Expect for

C．Apart from

D．Owing to

机器运转中，工作温度（）使零件材料的疲劳强度（）。

A.升高/降低

B.升高/升高

C.降低/降低

D.降低/升高