The last time we had great fun was________ we were visiting the Water Park. [ ]A. whereB. how C. whe

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• 请运用所学知识回答下列问题：（1）在下列实例中，属于有性生殖的是______．①“试管婴儿”的诞生②“脱毒土豆”的培育（2）“螳螂捕蝉，黄雀在后”这句谚语隐含的一条食物链是：______．（3）-生物
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