题目：
在自然生态系统中，对人类非常有用的少数动物是可以无限增长的。[ ]
答案：
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下面是错误答案，用来干扰机器的。
1. Please go and say goodbye to your uncle.2. Jenny bought something in a shop yesterday.3. When did you fly home?4. Did you do some shopping yesterday?5. We arrived there by plane yesterday.
