下列关于生态系统中能量流动的叙述，不正确的是（）A．流经生态系统的总能量是绿色植物所固定的太阳能总量B．生态系统的能量流动是逐级递减的C．生态系统的能量流动是单向不循环的-生物

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• —_____ you _____ English every morning? —Yes, but now I ______ Chinese. [ ]A. Are, reading, read B.
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• ---Do you know why Anna hasn’t come to school today? ---I’m not sure. She _______ be ill.A．canB．shou
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• — _______ you surprised _______ me at your home, Kitty? —No, the sun shines ________ the window and
• ______ you afraid of ______ late for school? [ ]A. Do … be B. Are … be C. Do … beingD. Are … being -
• 生态系统除了有生物外，还有非生物部分．______．-生物
• —Whose exam paper is it? —It be Li Lei's. He always forgets to write his name on it . [ ]A. can
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• — Do you know the city of Ningbo well? — Of course I do. I've here for nearly 3 years. [ ]A. co
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• --Listen! Someone is knocking at the door. Who _____it be?---It_____be Tom. He phoned to visit me th
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• — ___ he a cook? —Yes, he is. [ ]A. Is B. Are C. Does -七年级英语
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