蘑菇、小麦、蝗虫、燕子这些生物在生态系统中的成分依次是（）A．生产者、生产者、消费者、消费者B．生产者、生产者、分解者、消费者C．分解者、生产者、消费者、消费者D．分解者、-生物

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• 在一个生态系统中，除了生产者、消费者和分解者外，还包括______．-生物
• There is a saying "No news ____ good news". [ ]A. is B. are C. be D. will be -七年级英语
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