地球上有各种各样的生态系统，这些各种类型的生态系统组成的共同点是（）A．有生物成分和非生物成分B．有生产者、消费者C．有生产者、分解者D．有分解者、消费者-生物

更多内容推荐

• Here a letter for you, Miss Green.[ ]A. hasB. is C. have D. are -九年级英语
• You_______ play with the knife. You ______ hurt yourself.A．mustn’t; mayB．mustn’t; mustC．shouldn’t; m
• —I can’t stop smoking, doctor.— For your health, I’m afraid you________.A．mustB．have toC．willD．can-八
• The colour yellow______ the feeling of________．A．makes；energyB．creates；warmthC．represents；purityD．cr
• --What’s your problem? ---I have troublethese sentences in English. A.say B.to say C.saying-九年级英语
• I _____ Ken. My family name ______ Martin. [ ]A. am, am B. is, is C. is, am D. am, is -七年级英语
• 生态系统中的物质循环是[]A．反复出现B．单向流动C．逐级递减D．逐级增加-八年级生物
• Song Zuying's voice is so sweet and her songs _______very beautiful. [ ]A. taste B. smell C. so
• 右图是某草原生态系统的食物网示意图，请据图分析后回答：（1）图中属于生产者的是______，属于消费者的是______．（2）该图种有______条食物链．请写出最长的一条食物链：______．（3-
• 下列生物属于生产者的是（）A．蝌蚪B．细菌C．桂花树D．真菌-生物
• Naturally, after I told her what to do, my daughter _____ go and do the oppsite! [ ]A. may B. can C.
• My hair is too long . I must ____ at once. A. get it cutting B. got it cutting C. get it cut-九年级英语
• Can you give me some paper_____? A. to write B. to write with C. to write on-九年级英语
• 选择填空。Sheep ______ white and milk ______ white, too. [ ]A．are, is B．is, areC．is, is -七年级英语
• What_____ your name? [ ]A. am B. is C. are -七年级英语
• Lily ____ come tomorrow or she ____. I'm not sure.[ ]A. can;can'tB. may;can'tC.must;m
• Spring is a beautiful season when all trees ______green. [ ]A. turn B. sound C. feel -九年级英语
• I want a book for my granddaughter Linda who is 2 years old.A．buysB．buyC．to buyD．buying-九年级英语
• 一What is Morn cooking in the kitchen? 一Chicken,I guess. How nice it _________![ ]A. looks B. sounds
• 下列生物属于生产者的是（）A．苹果树B．草履虫C．细菌D．蝴蝶-生物
• 生物圈为人类的呼吸作用提供了（）A．氧气B．二氧化碳C．氮气D．二氧化硫-生物
• I ____Ben. My family name ____Martin. [ ]A. am; am B. Is; is C. is; am D. am; is -七年级英语
• What class_____ your sister in? []A. are B. is C. am -七年级英语
• ---Will you stay at home until your sister comes back? ---Sorry, I _______. I have a meeting and hav
• —Look! The man at the gatebe our headmaster. He stands there every morning.—No, it be him. He is hol
• 生态系统中的能量流动伴随着物质循环，如图是生态系统碳循环示意图．下列有关叙述中，错误的是（）A．①表示动物体内能量流向植物B．③表示植物的光合作用C．④表示动物的呼吸作用D．⑤-生物
• 用be 动词的适当形式(am, is , are )填空。1. His brother's first name ______ Tony. 2. I______ Gina. Nice to
• 将下列草原生态系统的成分与其对应项连接起来．非生物成分水、土壤等生产者腐生细菌消费者牧草、树木等分解者牛、羊等．-生物
• 属于消费者的是（）A．植物B．动物C．细菌D．真菌-生物
• 选择与句中划线部分意义最接近的解释，并将其字母代号填入答题卷相应空格内。小题1:Yang Shanzhou becomes well-known in China for planting so ma
• 在欧美流行一种生态球，其中有绿藻、2～3条小鱼、泥沙等，在这个处于平衡状态的封闭生态系统中，要使小鱼长时间存活必须要提供（）A．氧气B．二氧化碳C．太阳能D．足够的有机物-生物
• —you at home last night? —No, I . [ ]A. Are, am not B. Was, weren't C. Were, wasn't -八年级英语
• —_______I finish the work today?—No, you needn't.[ ]A. MustB. MayC. Can D. Need-九年级英语
• 用am, is或are填空。1. She ____ a teacher. Her name ____ Wang Li. 2. I ____ a boy. My name ____ Li Ming. 3
• Have you ever ______ the Great wall? [ ]A. been to B. gone to C. go to D. been -八年级英语
• 选择填空。 Jim thinks the train ______ a big moving party. [ ]A．is liking B．is like C．likes -七年级英语
• This piece of music _______ beautiful. [ ]A. looks B. sounds C. tastes D. smells -九年级英语
• 在生态系统中，真菌属于（）A．生产者B．消费者C．分解者D．破坏者-生物
• Neither my uncle nor Iinterested in such things. A. are B. am C. is-九年级英语
• —There's somebody at the door. _____ it be Jim? —No, it _____ be him. It's just seven o�
• —What's your car number?—______ 321471.[ ]A.I'm B. It's C. Its D. My car is -七年级英语
• 下列属于分解者的是（）A．营寄生生活的细菌和真菌B．自养型的全部微生物C．异养生活的细菌和真菌D．营腐生生活的细菌和真菌-生物
• The English song ________ very nice. Can you guess who is singing?[ ]A. smells B. tastes C. sounds -
• 如图为一个农田生态系统中的食物网，请据图回答．（1）在此生态系统中，生产者是______，在该生态系统中，图中没有画出的生物成分是______．该生态系统有______条食物链．图中营养-生物
• ---Look! It ________be Mrs. Smith.---It _________be her. She has just gone to Shanghai.A. can; mustn
• —Must I finish this job today?—No, you. You can finish it tomorrow. A. mustn’t B. needn’t C. can’t-九
• As for most students, they find it very difficultEnglish well. A. to learn B. learning C. learn-九年级英
• —Hi, I ____ Tony. _____ you Helen? —Yes, I am. [ ]A. am, Am B. am, Is C. am, Are D. is, Are -七年级英语
• 下面是生态系统的组成图解，请你补充完善：①______；②______；③______；④______．-生物
• ---Excuse me, may I take the magazine away? ---No, you ______. You ______ only read it here.A．mustn’