一个生态系统，无论大小都是由（）A．生产者、消费者、分解者组成B．阳光、空气、水组成C．植物、动物、细菌、真菌组成D．生产者、消费者、分解者和非生物成分组成-生物

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• If I ______ you, I would give some flowers to her. [ ]A. am B.is C. was D. were -九年级英语
• 词汇考查。1. In five years, Sally will b a doctor.2. — You could write him a letter.— Sorry, I don't
• I want to ________a teacher when I grow up.[ ]A.beB.do C,amD./-七年级英语
• 在一个池塘中，属于生产者的是（）A．虾B．水草C．小鱼D．青蛙-生物
• Alicebe at school because she phoned me from her home a minute ago.A．mustn’t B．isn’t able to C．may n
• This _____ a desk. These _____ chairs. [ ]A. is; are B. are; is C. is; can D. can; is-七年级英语
• 如图表示其生态系统中物质循环的过程．请分析回答：（1）图中生态系统的生产者是______、分解者是______（用图中代码表示）．（2）图中①、③分别表示的生理过程是______、______；（提示
• 在食物链“水草→虾→鱼→鱼鹰”中，哪一环节含有的能量最多（）A．水草B．虾C．鱼D．鱼鹰-生物
• _____ socks 20 dollars? [ ]A. Is the B. Are they C. Are the D. Is that -七年级英语
• There __________ a teacher and some students in the classroom. [ ]A. is B. are C. have D. has-七年级英语
• 句型转换1. Tony is thirteen years old. (改为一般疑问句,并作肯定回答) —_____ Tony thirteen years old?—_____ ,he _____
• 用am,is,are填空1. I _____a student. 2. He _____my son. 3. _____you a student? 4. We _____from England.
• 阅读，用is/isn't/are/aren't填空。1. Da Ming _____ in Class One. 2. Ling Ling _____English. 3. Da
• My name ____ Jack. Liu Ying and Sun Mei ____ my friends.[ ]A. is; areB. is; isC. are; isD. is; am-七年
• It____Jim because he left here a moment agoA．might beB．must beC．can’t beD．needn’t-九年级英语
• — I can’t get through to the general manager’s office.—The line is busy. Someone ________ the teleph
• These broken pieces of plates don’t fit together, they ___________ parts of different ones.A．can’t b
• 真菌、细菌在生态系统中占重要地位，这是因为（）A．吸收代谢废物B．能为其他生物提供食物来源C．能分解有机物，使之变为无机物，供绿色植物再利用D．吸收二氧化碳，释放氧气-生物
• 用所给词的正确形式填空。1. —How ___________ (be) your school trip? —It was great. 2. —___________ you __________
• There ________ 60 minutes in _______ hour .[ ]A. are ; an B. are ; a C. is ; the D. is ; an-七年级英语
• 右图为一个池塘的生态系统，池塘内有水草、浮萍、水绵、鱼、虾等生物．请根据学过的知识分析回答下列问题：（1）在该生态系统中，消费者是______；没有画出的生物成分是______．（-生物
• —Can the new railway station ____ as planned?—Sure, it completed in time, we’ll work two more hours
• 在农田生态系统中，小麦属于（）A．生产者B．消费者C．分解者D．非生物因素-生物
• 组成生物体的各种物质来自于（）A．无机环境B．生产者C．消费者D．分解者-生物
• —The books on the chair ______ Millie's, right?— Yes, they are. [ ]A. is B. they're C. it&
• No news________ good news.[ ]A. are B. is C. do D. does-七年级英语
• 词形变化.1. Mr. Smith and his family _______ (be) in the park now.2. Do you go _________ (fish) at the w
• You ______to meeting this afternoon if you have something important to do.A．needn’t to come B．don’t
• A ping-pong ball and a tennis ___ under the bed.[ ]A. is B. am C. areD. isnot -七年级英语
• 在一块稻田生态系统里，有杂草、虫子、青蛙、田鼠等．直接或间接地为动物提供食物的成分是______，而虫子、青蛙、田鼠的作用是______，还有一些默默无闻的成分是______，其作-生物
• You ______ your coffee before it turns cold.A．should drinkB．should drinksC．should drinkingD．should t
• 某一生态系统能长期存在，除了非生物的物质和能量外，还必须具有（）A．生产者和人B．生产者和消费者C．消费者和分解者D．生产者和分解者-生物
• 右图为生态系统组成成分，据图写出1--4的名称：[1]是______，[2]和[3]是______，[4]是______．-生物
• 如图是某草原生态系统的食物网图解，请据图回答．（1）该食物网中共有______条食物链．请写出其中最短的一条食物链______．（2）食草昆虫和鼠的关系是______．青蛙、蜘蛛、蛇等生物进-生物
• The piece of music ______The piece of music ______really beautiful.[ ]A. looks B. hears C. sounds D.
• —_____ many of you good at _____? —No, only he _____.A. Does; swimming; doesB. Are; swim; areC. Are；
• —What _____ in the pencil-box?—_____a pencil and a rubber. [ ]A. are; They're B. are; There
• Eddie _________ sleeping __________ going out.A．would rather; thanB．prefers; thanC．would rather; toD
• Youcool! Are theseyour new sunglasses? [ ]A．taste B．look C．smell D．sound -九年级英语
• 下列选项中，可称为一个生态系统的是（）A．长江中所有的鱼B．水稻田里的一切植物和动物C．长江中一一切生物D．福建的“母亲河”-闽江-生物
• “螳螂捕蝉、黄雀在后”，黄雀体内能量的最初源头是（）A．螳螂B．蝉C．草D．阳光-生物
• Students ought ______ the truth.A．told B．tellC．tellingD．to tell-九年级英语
• 下列食物链，你认为正确的是（）A．虫-草-鸟B．阳光-虾-小鱼-大鱼C．兔-草-虫D．草-虫-蛙-蛇-生物
• 在生态系统中，猫头鹰获得能量最少的食物链是（）A．青草→鼠→蛇→猫头鹰B．青草→蝗虫→麻雀→蛇→猫头鹰C．青草→兔→猫头鹰D．青草→鼠→猫头鹰-生物
• 如图是草原生态系统的食物网，请根据图回答：（1）该生态系统的生产者是______，直接以植物为食的消费者是______．（2）该食物网有______条食物链，最长的一条食物链为______．（3）如-
• 改错题。( ) 1. —Are you Jack ? —Yes, I'm. A B C D()2. Who's your uncle? He's a doctor.A B
• Johnny, you _________play with the knife, you_________ hurt yourself. A．won’t; can’tB．mustn’t; may C
• Whose T-shirt is this? It________ be John’s. It’s ________ small for him.A．can’t, much tooB．can’t,
• ---The man in a black suit _______ be our youth worker.---It _______ be him. I saw him in the classr
• Mr and Mrs Smith _______ busy _______ their housework.[ ]A. is; with B. are; with C. is; doD. are; d