It seems that you are looking for the characteristics of a good summary. Here's a breakdown based on the statements you've provided, along with an evaluation of their correctness:
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A good summary is helpful; it only includes the story's main points.
- Evaluation: This is true. A good summary should be helpful for readers by condensing the essential elements of the story without unnecessary information.
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A good summary is concise; it only includes the story's main points.
- Evaluation: This is also true. Conciseness is a key aspect of a good summary as it allows readers to grasp the main points quickly and efficiently.
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A good summary is detailed; it only includes the story's main points.
- Evaluation: This statement is misleading. While a summary can provide some detail, it should not be overly detailed. A good summary focuses on the main points rather than providing exhaustive details.
In conclusion, a good summary is both helpful and concise, focusing solely on the main points of the story. It should not be overly detailed, as that would contradict its purpose of providing a quick, clear overview.