如图是绿色开花植物子房的结构及受精过程示意图，请据图回答下列问题（1）花粉落到柱头上的过程叫做______．图中①表示花粉粒受到柱头上黏液的刺激开始萌发，生出[______]______-生物

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• The last time we had great fun was ______ we were visiting the Water Park. [ ]A. when B. how C. wher
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• 下列实例，属于有性生殖的是（）①“试管婴儿”的诞生②“克隆羊”的出现③“脱毒土豆”的培育④生产胰岛素“工程菌”的培育⑤蕨类植物的生殖．A．①③B．②④C．③④D．①⑤-生物
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• 短文改错。 假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的以下作文,文中共有l0 处语言错误，每句中最多有两处。每处错误仅涉及一个单词的增加、删除或修改-高三英语
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