小薇买来的香蕉放了几天后，开始慢慢长出“黑斑”，出现了腐烂的现象，这与生态系统中的什么成分有关（）A．生产者B．分解者C．消费者D．都不是-生物

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• If you ______tired，you’d better have a rest.[ ]A. be B. isC. areD. may-八年级英语
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• 下列生物属于生产者的是（）A．柳树B．羊C．细菌D．猪-生物
• —Nice to meet you , Mike.________?—Everything is OK. Thanks.A What are you doing B Where have you be
• —Well, let's go to visit the Ren'ai Park this Saturday. —That _______ great. [ ]A. feels B
• —I hit a tree on the way to meet my friend at the railway station. —I am sure that youhave been driv
• 下列能构成生态系统的是（）A．生物圈及生物圈内的生物B．一个湖泊中的所有生物C．地球上的所有人类D．长白山森林中的所有树木-生物
• 下列各组生物，全部属于生产者的一组是（）A．病毒、紫菜、地衣B．苹果树、松树、小麦C．蘑菇、白菜、水稻D．啄木鸟、松树、杨树-生物
• 如图是生态系统的组成示意图，请据图用图中序号回答问题：（1）生态系统中的生物部分包括生产者、消费者和分解者，请指出图中生产者是______，消费者是______和______，分解者是-生物
• —KoreansingerJangNara______Chinaforyears.—Lastweek,shealso______herwishtolearncrosstalk(相声).[ ]A.has
• Today is Wednesday. He _______be at home. He ______ be at school.A．can’t, canB．can’t, mustC．mustn’t,
• His father and mother ____ teachers.[ ]A. are all B. are both C. both are D. all are -七年级英语
• — How _____ your vacation, Lucy? — It was pretty good. [ ]A. did B. were C. do D. was -八年级英语
• —These roses _______ lovely. —I want to send them to my teacher on Teachers' Day. [ ]A. look B.
• 在生态系统中，属于分解者的是（）①河中的鱼②树桩上的蘑菇③淡水中的草履虫④土中的细菌⑤高山上的油松⑥草丛中的蝗虫．A．③⑤B．①②C．④⑥D．②④-生物
• She doesn’t ______ a new dictionary because she bought _____ a week ago.A．need to buy, oneB．need buy
• —Is that man Mr Hu?—That ______ be Mr Hu. Because he has gone to Japan with his wife.A．couldB．can’tC
• The lunch in our school _____ good. [ ]A. areB. isC. am -七年级英语
• Lucy’s colour ________blue because she likes to be the leader, so it __________red.A．can’t be, must
• 在生态系统中作为生产者，可以通过光合作用制造有机物的是（）A．动物B．植物C．非生物部分D．细菌、真菌等微生物-生物
• Weknowyou'reacleverman,andyourplan______verygood. [ ]A.seesB.soundsC.hearsD.looks -七年级英语
• Have you heard of the story? It ____ funny and interesting. [ ]A. looks B. tastes C. smells D. sound
• It is in the library, you ______ talk loudly. [ ]A. may notB. can'tC. needn'tD. mustn'
• Where _____ your P.E. teacher from? [ ]A. doesB. is C. do -七年级英语
• 校园中的柳树属于（）A．分解者B．生产者C．消费者D．非生物部分-生物
• 右图是生态系统4种组成成分的关系图解，图中的B是二氧化碳．请据图回答：（1）本生态系统中的能量流动是从A______固定太阳能开始的．（2）此系统中连接生物界与无机环境的是______．-生物
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• 在生态系统中，生产者和消费者所代表的生物分别是（）A．动物与动物B．植物与植物C．动物与植物D．植物与动物-生物
• _____ her hat on the dresser? [ ]A. Is B. Are C. Can D. Do -七年级英语
• You’d better ________ right after supper.A．don’t runB．not runC．not to runD．to run not-九年级英语
• The cloth _____ soft. [ ]A. is feel B. fell C. feels D. felt -九年级英语
• —Howdoyoulikethispieceofmusic? —It______good. [ ]A.looksB. soundsC. lisetensD. feels -八年级英语
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• 在某个特殊环境中可以缺少的成分是（）A．生产者B．消费者C．分解者D．非生物部分-生物
• Hello, I ________ Jim.[ ]A. am B. is C. are D. be -七年级英语
• The boy ______ glasses is my classmate. He ______ of medium build.[ ]A. has, is B. with, has C. with
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• 下列说法错误的是（）A．非生物因素为生命的存在提供了物质基础B．绿色植物是生产者，为动物的生存提供了有机物．没有生产者，其他生物就失去了生存的基础C．消费者不能制造有机物-生物