问题
填空题
其特点表现为需要数量大，阅读时间集中，（），一时供不应求。
答案
参考答案：阶段性强
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其特点表现为需要数量大，阅读时间集中，（），一时供不应求。
参考答案：阶段性强
| 根据短文，选择正确答案。 | ||
| Come and meet my family! This is my father. He is forty-two. This is my mother. She is forty. This is my brother. He is eighteen. This is my sister. She is fifteen. We play together.
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