题目

物质循环、能量流动和信息传递是生态系统的基本功能，下列说法不正确的是( )A.碳在生物群落与无机环境之间的循环主要是以CO2的形式进行的B.初级消费者同化的能量中，未利用的能量保证了生态系统的稳定性C.研究能量流动可以实现能量的多级利用，提高能量利用率D.信息传递可以发生在生态系统各种成分之间，而且都是双向的根据短文内容,用方框中所给词的正确形式填空，使短文完整、正确，并把答案写在答题卡的相应位置（每个词只能使用一次）。Dear Mom and Dad,How are you? I 1. you a lot. I am in America now. I am living with an 2. family in New York now. The father, Mr Brown, is a teacher. He works very hard every day. Today is Sunday, he 3. gets up very early because he wants to help clean the house. Now he 4. with a parent on the phone. The mother, Mrs Brown, is very friendly to me. She helps me a lot 5. my life. Now she is reading a story to her three 6. . Where 7. I? I am in my bedroom, thinking of you and my grandparents. Today is the 8. day of the fifth month of the lunar calendar (农历). It’s the Dragon Boat Festival in China. But in America, it's not a festival, it’s just like any 9. day. How’s it going with my sister Beibei? Please say “Hi” to 10. .Best wishesYours.Huihui