短文改错。I happened to meet some American tourists. I greeted to them in English and then we began to ch

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• 如图为青蛙的生殖发育过程图，请据图回答下列问题：(6分)（1）蛙的发育经历了[①]，[②]，[③]幼蛙和[④]成蛙四个时期。（2）这种发育方式叫做。（3）②时期的青蛙幼体用呼吸，生活在水中-八年级生物
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• 两栖动物的生殖和幼体的发育必须在完成，幼体要经过变态发育才能上陆地生活。-八年级生物
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• 表1是某校生物课外兴趣小组人工孵化蛙卵的实验方案记录表（用同样大小的容器，装等量的水，孵化时间相同）。请回答：表1人工孵化蛙卵的实验记录项目组别水源水量（ml）水温（℃）蛙卵-八年级生物
• 下列诗句或成语中，包含生殖现象的是（）A．探花蛱蝶深深见，点水蜻蜓款款飞B．螳螂捕蝉，黄雀在后C．几处早莺争暖树，谁家新燕啄春泥D．忽如一夜春风来，千树万树梨花开-八年级生物
• 有一种动物，它既能用肺呼吸又能用皮肤辅助呼吸。这种动物是（）A．鳄鱼B．青蛙C．蚯蚓D．家鸽-八年级生物
• 青蛙从幼体到成体,不可能出现的变化是A．鳃消失B．长出四肢C．尾消失D．体表出现鳞片-八年级生物
• 幼体生活在水中，用鳃呼吸；大多数成体生活在陆地上，一般用肺呼吸，这是哪类动物的特征。（）A．鱼类B．两栖类C．鸟类D．哺乳类-八年级生物
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• 下列动物不属于变态发育的是（）A．蜜蜂和蟾蜍B．家鸽和家鸡C．青蛙和蟾蜍D．苍蝇和蚊子-生物
• 关于两栖动物的生殖和发育，下列叙述正确的是（）A．两栖动物的生殖和发育都离不开水B．雌雄蛙抱对是在交配C．求偶期雌蛙会鸣叫D．两栖动物的幼体和成体都是用肺呼吸-生物
• “稻花香里说丰年，听取蛙声一片”指的是（）A．蝌蚪呜叫B．雌雄蛙共同呜叫C．雌蛙鸣叫D．雄蛙鸣叫-生物
• 从两栖动物的生殖发育对环境的要求，解释为什么两栖动物的数量在急剧减少？我们应当采取哪些保护措施（至少3个）？-生物
• 请阅读下面两则资料，分析回答问题：资料一：据2009年7月3里《新民晚报》消息，“国际保护”组织在厄瓜多尔的边境纳格里扎河盆地的热带雨林中经过数月的科学考察，发现了14个新物种-生物
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