在一棵苹果树上可以结出红富士、金帅、小国光三个品种的苹果，采用的繁殖方式是[]A．种子繁殖B．扦插C．压条D．嫁接-八年级生物

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• 为使水蜜桃保持其优良性状，果农们常采用的繁殖方法和为了在短时间内生产出大批无病毒兰花苗，科学家们常采用的繁殖方法依次是[]A．压条、植物组织培养B．嫁接、植物组织培养C-八年级生物
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• 用一枝黄色月季枝条做接穗，红色月季枝条做砧木进行嫁接，嫁接后的枝条将开的是[]A．红色B．黄色C．橙色D．有黄又有红-八年级生物
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• 某果农向你请教如何在同一株苹果树上结出不同品种的苹果，你建议他使用的方法是[]A．扦插B．压条C．嫁接D．播种-八年级生物
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• We had our bad times but on the whole we are ____ happy with our life.A．merelyB．rarelyC．fairlyD．chi
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• 下列哪些繁殖方式属于无性生殖①克隆羊②水稻的种子繁殖③酵母菌的出芽生殖④利用植物组织培养技术培育康乃馨⑤哺乳类的胎生⑥土豆发芽[]A．②③④⑤B．①②④⑤C．①②③⑥D．①③④⑥-八年级生物