1 . 听下面一段较长对话，回答以下小题。
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| A．30%. | B．24%. | C．96%. | D．50%. |
| A．He nearly became blind. | B．His vision became even worse. |
| C．He couldn’t see very well at night. | D．His eyes were dry for several months. |
| A．Nervous. | B．Regretful. | C．Painful. | D．Relaxed. |
| A．Laser surgery is safe despite its side effects. |
| B．Two weeks’ home rest is required after the surgery. |
| C．The cost of the surgery is too high for ordinary people. |
| D．People with poor vision are all good candidates for the surgery. |
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