Yoube hungry after the long walk．Help yourself to some cakes．A．can’tB．shouldn’tC．needD．must-九年级英语

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• 在生态系统中，以朽木和粪便为营养的蕈类、粪金龟子、蜣螂等生物属于（）A．消费者B．生产者C．分解者D．消费者葙分解者-生物
• 在生态系统中，生产者是（）A．能够吃现成的植物B．都是吃现成的动物C．能够自己制造有机物D．从土壤中直接吸收有机物-生物
• 农田生态系统中，属于生产者的是（）A．青蛙B．昆虫C．水稻D．泥鳅-生物
• 用 is / isn't/ am / are 填空1. Thismy teacher .2. Ifine.3. Is she Maria ？No， she 4.you Jane ？ No，
• 今年初的雪灾使很多竹木拦腰折断，却也冻死了许多越冬害虫和虫卵．眼下田里不用打那么多农药了，农作物长势喜人．这说明同一食物链上生产者和消费者之间有此消彼长、相互制约的-生物
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• 分析生态系统简图，回答有关问题：（1）在这个生态系统中，非生物因素出了泥土外，还有温度、______、水和就空气等．（2）该生态系统中，分解者是______．（3）该生态系统中，最长的一-生物
• 连线题A组：A、猫头鹰----1、分解者B、蘑菇----2、生产者C、菠菜----3、消费者B组：A、老虎吃野猪----1、合作关系B、许多蜜蜂在酿蜜----2、竞争关系C、田里的水稻与杂草----3
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