The Summer Palace is really beautiful.In fact，I doubt whether China has park.A. a more be

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A. a more beautiful
B. a most beautiful
C. the most beautiful
D. a beautiful
解析：A
解析　比较级用在否定句中可表示最高级的含义，因此whether China has a more beautiful park意为“是否中国还有比这更美的公园”，即“这是中国最美的公园”。