目前认为与感音神经性聋有关的元素代谢障碍是（）。
A.碘
B.铜
C.铅
D.磷
E.砷
参考答案：A
The doctor ________ the woman ,but he couldn’t find out what was wrong with her.
A．looked over
B．looked after
C．looked for
D．looked out
