After the terrible car accident, the whole world had been completely dark and quiet for Robert Edwards for almost ten years, for he became both blind and deaf after the doctor had saved him. The loss of sight and hearing threw him into such a sorrow that he tried a few times to put an end to his life. His family especially his wife did their best to tend and comfort him. By and by he finally regained the courage to live on.
On a hot summer afternoon he was taking a walk with a stick near his house when a thunderstorm started all at once. He stood under a large tree in order not to get himself wet. Unfortunately he was struck down to the ground by a lightning. The witnesses thought him dead but he woke up some 20 minutes later lying face down in muddy water below the tree. He felt that he was trembling badly, but when he opened his eyes ,he didn’t dare to believe that he saw a plough (梨子) lying near the wall. When Mrs Edwards came running up to him, she shouted their neighbours for help. And he saw her and heard her voice for the first time in nearly ten years.
The news of Robert’s regaining his sight and hearing quickly spread in his area. And many doctors came to prove the truth of the news. Most of them said that he gained sight and hearing again obviously from the knock of lightning; none of them could give convincing reasons,






How did Edwards get his sight and hearing once more according to the doctor?

A．He regained them from head injury when he fell from a tree.

B．His wife’s first visit after almost ten years made him so happy that he regained them.

C．The lightning took the feeling from his legs and gave the senses of sight and hearing to his head.

D．The blow that caused him blind and deaf was very severe, so it took another severe blow to regain them.