1 . 听下面一段较长对话，回答以下小题。1.
2.
3.
4.
| 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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2 . 听下面一段独白，回答以下小题。1.
2.
3.
| A．Weak bones. | B．Loose teeth. | C．Skin problems. | D．Heart diseases. |
| A．Having food rich in vitamin. |
| B．Walking midday in the sun with no suncream. |
| C．Taking vitamin D pills every day. |
| D．Wearing darker coloured clothes and sunhats. |
| A．To analyze the common causes of lack of vitamin D. |
| B．To encourage people to be exposed to the sun for vitamin D. |
| C．To emphasize the importance of vitamin D in one’s health. |
| D．To introduce some different ways to gain vitamin D. |
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3 .
| A．They are too expensive to eat. |
| B．They are not as healthy but they taste better. |
| C．Although they are a bit more expensive, they are tasty and good for your health. |
| D．Since they are more expensive, they must be healthy and tasty. |
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