下列关于生态系统的能量流动示意图中，正确的是（）A．太阳能→生产者→消费者→分解者B．太阳能→生产者→消费者→生产者C．D．-生物

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• Last year I _________ drive. I used to take the bus.A．couldB．couldn’tC．shouldD．shouldn't-九年级英语
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• ----- I want to know if I _________ smoke here. ----- No, you ___________. Can’t you see the sign “N
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• 如图是表示生态系统中生产者、消费者和分解者之间的相互关系．（1）食物链和食物网是生态系统的结构基础．写出图中的一条食物链______（2）生态系统的物质循环是指组成生物体的物质-生物
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• Their number ______ smaller and smaller. [ ]A. is getting B. are getting C. will change D. will chan
• There________ some milk in the bottle. [ ]A. isB. areC. be -八年级英语
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• This is Miss Gao. She_____your new teacher. [ ]A. beB. am C. is D. are -七年级英语
• —Must I take much medicine every day?—No, you ________.A．mustB．mustn’tC．needn’tD．can’t-八年级英语
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• — _______ do you go shopping with your mother?— I seldom do that.A．How oftenB．How soonC．How farD．How
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• If I you, I'd be here earlier. [ ]A. was B. were C. am D. be -九年级英语
• It’s Sunday tomorrow, so you _______ get up so early. A．needn’t toB．need toC．don’t need toD．don’t ne
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• 阅读下面材料，结合所学知识回答问题．材料（一）“太湖美，太湖美，美就美在太湖水”，然而，随着大量富含氮（N），磷（P）等元素的生活污水被排放进太湖，导致水体富营养化，湖内的-生物
• Chengdu _____ a beautiful place to live in. [ ]A. sounds B. sounds like C. sound like -八年级英语
• 如图1所示为一草原生态系统中狼、草类和兔子的数量关系图，请据图回答问题：（1）A代表的生物是狼，B代表的生物是______，C代表的生物是______．（2）实行退耕还牧政策之后，草原生-生物
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• --Whose tennis racket is this, Linda?--Look! Jerry's name is on it! It _________ be his.A．mayB．
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