下列关于生态系统的叙述中，错误的是（）A．生态系统的结构由生产者、消费者和分解者三种成分组成B．生态系统中的能量最终都以热量形式散发到大气中C．森林生态系统的自动调节能力-生物

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• － Must I clean my rabbit’s hutch every day?－ No, you ____________.A．mustn’tB．needn’tC．can’tD．don’t-八
• ——Must I park my car behind the cinema?——No, you. Youpark it here.A．mustn’t, may B．may not, mustC．do
• —Shall we go to visit Mr. Wang now?—Mr. Wang________here now. He left for Shanghai by air this morni
• 根据要求完成句子，每空一词。1. Does Jack's pen friend come from Canada?(改为同义句) Jack's pen friend Canada?
• He _____ tall and he is _____ medium build.[ ]A. has; of B. is; of C. is; on -七年级英语
• 食物网中的害虫在其生态系统中扮演的角色是（）A．生产者B．消费者C．分解者D．非生物部分-生物
• Lily is a good student. She late for school.[ ]A. is hardly ever B. isn't neverC. is oftenD. is
• 一个完整的生态系统的组成应包括．（）A．全部的食物链和食物网B．生产者、消费者和分解者C．各种动物、植物和阳光D．非生物部分和生物部分-生物
• ---Listen! Someone is knocking at the door. Who _____it be?---It _____be Tom. He phoned to visit me
• _____pandas from China?[ ]A. Are B. IsC. Do D. Does-七年级英语
• My mother ill last week.[ ]A. is B. are C. was D. were-八年级英语
• Ten glasses of coffee enoughus.[ ]A. is; for B. are; for C. does; toD. do; to-八年级英语
• —_____I use your dictionary, Tom?—Of course, you _______A．Can; could B．Could; canC．Could; couldD．Can
• Susan’s parents have bought a large house with a swimming-pool. It ____ be very expensive.A．mustB．ca
• 如图表示生产，消费者，分解者之间的关系，请据图回答问题（1）图中的生产者是______；（2）图中的消费者是______；（3）图中的分解者是______；（4）图中共有食物链______条．图中的-
• 单项选择。There _____ two pencils on the desk. [ ]A. are B. be C. isD. am -七年级英语
• —Do I have to come back tomorrow?—Yes, you _____. [ ]A. can B. may C. must D. should -九年级英语
• Where _____ Lily and Lucy from?[ ]A. is B. are C. do D. does-七年级英语
• You drink wine before driving, or the police will take your license away.A．don’t have toB．needn’tC．m
• ---I was told to be here at this time.---Sorry, you ___________. I forgot to tell you we've cha
• ---- Is Ann knocking at the door?--- No, it ______ be Ann. She has gone to Beijing. A．can’tB．mustn’t
• 地球上生物生命活动所需的能量几乎都是由植物光合作用提供的，因此可以说，地球上生物所需能量的最终来源都是（）A．化学能B．太阳能C．地热能D．植物能-生物
• 如图为某生态系统中的部分生物，请据图回答下列问题：（1）在这个生态系统中，非生物成分包括______．（2）在这个生态系统中，生物成分包括______．（3）这个生态系统中的起点生物是_-生物
• --Whose T-shirt is this? --Itbe John’s. It’s much too small for him.A．mayB．mustC．can’tD．shouldn’t-九年
• There_______greatchangesinourhometownoverthetwentyyears. [ ]A.havetakenplace B.havehadC.havebeen D.w
• ---Could I borrow your dictionary?---Of course you ________.A．couldB．canC．must D．should-八年级英语
• 如图为生物圈中物质循环局部示意图，请回答：（1）在生态系统中，物质是循环的．能把二氧化碳和水这些无机物造成有机物的是______．（2）能把有机物再转变成二氧化碳和水等返回无机-生物
• 用所给词的正确形式填空。1. English is very (importance) for us.2. Don't be (anger)with me, Dad. I won'
• —Is that Lucy’s cousin, Anna?—No, it ______ her. She has gone to Paris.A．mustn’t be B．might be C．can
• Your idea（想法） very good.[ ]A. sounds B. sees C. hearsD. listens-七年级英语
• 生态系统中的能量流动开始于（）A．绿色植物B．真菌C．动物D．人-生物
• 生物圈的生物丰富多彩，请你把下列生物与所在生物圈中的作用线连起来．生产者①柳树②蝗虫消费者③小麦④金丝猴分解者⑤炭疽杆菌⑥乳酸菌．-生物
• 地球上所有生物生命活动的能量来源是______．在生态系统中，能量沿着食物链依次流动过程中表现出来的特点是______．-生物
• 选择填空。 Sally went to the library yesterday. She said it ______ just so.[ ]A．was B．is C．were -七年级英语
• — Must I answer this question in English?— No, you_________.A．mustn’tB．needn’tC．can’tD．shouldn’t-九年级
• I can play tennis，but my sister ________．[ ]A．don’tB．can’tC．doesn’t D．isn’t-七年级英语
• — Must we go to see a doctor at once? — No, you ___. [ ]A. can't B. mustn't C. needn'
• My teacher's voice _____sweet,We all like her songs.[ ]A. feelsB. smellsC. looks D. sounds-八年级英
• —Must we clean the classroom now?—No ,you _______.A．mustB．needn’tC．aren’tD．mustn’t-九年级英语
• 如图为生态系统的物质循环图，请据图回答：（1）在生态系统中，植物是______，动物是______，细菌、真菌是______．（2）箭头1所示的过程是：动物直接或间接地以植物为食，通过呼吸作-生物
• 如图为某校园生态系统组成成分的示意图，图中的乙属于（）A．生产者B．消费者C．分解者D．无机环境-生物
• 据如图回答下列问题：（1）图中阳光、水、空气、无机盐等组成了生态系统中的______，绿色植物、细菌、真菌和其他四种动物组成了生态系统中的______．（2）图中一共有______条食物链-生物
• There _______ a bank , two supermarkets and a park in the neighborhood. A．hasB．haveC．isD．are-八年级英语
• ---Look, Sue is over there. --- That ____ be her. She is in Canada now.A．mustn’ tB．can’tC．needn’tD．w
• —Mum, must I wash the dishes right now?—No, you ____.[ ]A. shouldn’tB. wouldn’tC. mustn’tD. needn’t-
• Uncle John is getting old and he has trouble ______ what others say to him. A. hearing B. hear C. to
• We are going to the beach for vacation. That______good.[ ]A.feels B.Looks C.sounds D.smells-八年级英语
• He ___ in 1997.[ ]A. boreB. bearC. was bornD. born-八年级英语
• 大多数细菌和真菌在生物圈中属于（）A．生产者B．消费者C．分解者D．寄生者-生物
• Tina gets up late, so she _____ go to school by taxi.A．cansB．would likeC．has to D．shoulds-八年级英语