01/09 綜合寫作解析和範文：
閱讀和聽力圍繞著修補牙齒是否應該使用汞合金這種材質展開交鋒。閱讀持反對觀點，給出三條理由，聽力一一加以駁斥。
首先，閱讀認為，汞損害人的神經、免疫等系統，危害人體健康。聽力材料反駁說，汞合金裡的汞含量很小，不足以造成人身危害，只有少數對汞過敏的人會受到影響。
其次，閱讀指出，從牙醫診所流出的汞合金廢物經下水道排進江河湖泊之後，會污染水質，進而威脅野生動物。聽力則表示，安裝過濾隔離裝置就能防止汞流進水路，造成破壞。
最後，閱讀聲稱，還有其他材料，比如金、陶瓷、樹脂等可以取代汞合金，規避其弊端。聽力卻表示，在口腔這種濕潤環境下，汞合金更耐用，而且單價也比金要便宜很多。
- SAMPLE -
The reading passage presents three points to support that it is not advisable to employ mercury in dental repairs, while the speaker thinks otherwise.
To begin with, the reading states that mercury exerts malign effects on people's health by undermining human neurological, mental, and immune systems. According to the lecture, however, study has shown that small amount of mercury contained in dental amalgam is unlikely to be harmful to the vast majority of people, apart from those who are allergic to the material.
In addition, the author argues that the mercury escaped from dentists' offices through sewer networks will spoil the rivers and lakes and later pose threat to the wildlife. The professor refutes this argument by pointing out that separators, which are capable of collecting substances, can be installed in the drains to prevent the amalgam waste from entering into the waterways.
Finally, contrary to the belief in the passage that such less harmful materials as gold, porcelain and resin can replace mercury, the lecturer contends that mercury alloy lasts longer than those alternatives, as the mouth is a wet environment, and besides, it is economically more affordable, especially compared with gold, which is more expensive per unit. （199 words）
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