评分：Band 8
All parts of the task are sufficiently and appropriately addressed. A clear position is presented and supported and ideas are relevant and well-developed. Some further extension in supporting points, such as some mention of negative effects, however brief, could be added to raise this to the highest band for Task Response. There is a clear progression throughout the response and a wide range of cohesive devices is used with flexibility, although there is evidence of rare errors too. However, the personal comment in the final paragraph is a sudden topic shift after the general exploration of the issues. This is a slight lapse in the development and clear progression of the response, and prevents it from reaching the highest band for Coherence and Cohesion. A wide range of vocabulary is used with flexibility and precision. The occasional minor error, such as the omission of dependent prepositions, is evident but not systematic. Similarly, minor errors or omissions occur in structures, but this does not detract from the wide range flexibly and accurately used in general; the majority of structures are error-free.
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（编辑：JIE）
