非生物物质为整个生态系统的生物生活提供_____和_____。-八年级生物

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• 生态系统中的生产者主要是指（）A．绿色植物B．各种动物C．腐生细菌D．各种真菌-生物
• —You look so tired. —Yes. The loud noise upstairs stopped me the whole night.A．sleptB．to sleepC．fell
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• 根据对这幅图的观察，请你回答以下两个问题：（1）请用箭头把它们表示出来．（2）在这个小型生态系统中，草是______者，所有的动物是______者．食物链彼此互相交错，构成了______．这-生物
• There is going to ______ a basketball match on the playground this afternoon. [ ]A. has B. have C. b
• 一般的说生态系统中数目最少的是（）A．植物B．草食动物C．肉食动物D．细菌和真菌-生物
• 如图是自然界碳循环的简图，图中的甲、乙、丙各代表什么（）A．甲为生产者，乙为分解者，丙为消费者B．甲为消费者，乙为分解者，丙为生产者C．甲为分解者，乙为生产者，丙为消费者-生物
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• —Do you know ?—I’m not sure, maybe he is an artist.A．who is the manB．what is the manC．who the man is
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• 在一个以小麦为主要农作物的农田生态系统中，生长着杂草，生活着蚜虫、蜘蛛、田鼠、蛇等其他生物．据此请分析回答：（1）请你写出此农田生态系统中，小麦与其他生物之间两种关系-生物
• 对生态系统中的皂荚树、蝉、鸟，正确的理解是（）A．只有蝉是消费者B．只有鸟是消费者C．只有皂荚树是生产者D．三种都是消费者-生物
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• 在一个相对稳定的生态系统中，数量最少的是（）A．植物B．草食动物C．细菌和真菌D．肉食动物-生物
• 如图是一个湖泊生态系统，请根据图回答：（1）此生态系统的生产者是______．（2）此生态系统的消费者是______．（3）在此湖泊生态系统中，肯定存在没有表现出来的生物是______．它们在-生物
• —Look at that girl! Is it Susan?—No, it _______ be her. She has gone back to her hometown.A．mustn’tB
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• 生态系统的组成包括生物部分和非生物部分，其中生物部分包括______、______、______．-生物
• 下列微生物中，属于生产者的是（______）；属于消费者的是（A）；属于分解者的是（C）；具有固氮作用的是（D）A．寄生真菌B．硫细菌C．枯草杆菌D．根瘤菌-生物
• 生产者与消费者之间的关系，主要是______的关系，因而形成了______．很多条这样的结构相互联系，就形成了______．-生物
• The number of the birds in the zoo _______ about ninety. [ ]A. amB. is C. are D. be -八年级英语
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• 单句改错。( )1. I will going there tomorrow. A B C D ( )2. Let’s put a triangle of always. A BC D ( )3. S
• 在一个生态系统中，越多，在能量流动中消耗的能量就越多，所以大多数食物链只有_____个营养级。-八年级生物
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• J K Rowling jumps farther than ______ in her class.A．any other boysB．the other boysC．any boyD．anothe
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