生态系统是由生产者、消费者、分解者组成的．______．（判断对错）-七年级生物

更多内容推荐

• 下面是一个生物与环境的关系图，根据图和生物学知识回答问题：（1）在该生物系统中，能利用阳光制造有机物的是______，因此它被称作______；被称作是消费者的有______，主要原因-七年级生物
• 没有生产者，消费者和分解者同样可以生存．______．（判断对错）-七年级生物
• 如图表示生态系统中四种成分之间的关系，请据图回答问题：（1）本系统中的能量流动是从______固定太阳能开始的．（2）图中过程（3）（从丁--甲）是通过______实现的．（3）甲与乙的关系为-生物
• —Must I park my car behind the building?—No, you _______. You _______ park it here.A. mustn’t; mayB
• —_______ I take the newspaper away, please ?—No, you mustn’t. You _______ only read it here.A．Must;
• 句型转换。（每空一词）1. It's an English map.（变一般疑问句） ____ ____ an English map?2. Is that her computer?（作否
• 非生物物质为整个生态系统的生物生活提供______和______．-七年级生物
• 用be动词的适当形式填空。1. I _____ a teacher. 2. —What _____ that?—It _____ a map. 3. This _____ my friend, Dam
• The book ________ be Tom’s. Look! His name is on it.A．have toB．mightC．couldD．must-九年级英语
• 下列属于分解者的一组生物是（）A．水藻和细菌B．细菌和真菌C．鱼和蛇D．苔藓和大豆-七年级生物
• If you want to ______, you must have more exercises.[ ]A. keep health B. keep in healthy C. stay hea
• He said that itgoing to rain.[ ]A. is B. be C. wasD. were-八年级英语
• 观察如图，回答问题：（1）图中的细菌和真菌是生态系统中的______．（2）细菌和真菌把动植物遗体分解成______、______和______，这些物质又能被植物吸收和利用，进而制造______．自
• — I smoke here, Sir?— No, you . Look! It’s non-smoking area.A. Can; needn’tB. May; mustn’t C. Could
• —Must I finish the book today?—Yes, you ________, but you ________ finish it now. Have a rest.A．do;
• There is going to_____ a film at the cinema this evening.[ ]A. be B. haveC. beingD. having-八年级英语
• 生态系统由______部分和______部分组成．生物部分包括：______、______、______．-七年级生物
• The red bicycle _____ be Lily’s. She has a blue bicycle.A. mustn’t B. might not C. can’t-九年级英语
• 改错。l. We have become friends for many years. 2. I am going to phone him after school will be over. 3
• — Mum, will you buy me the new iPad after the Entrance Examination?— I’m afraid I ________, dear. We
• 如图是某市产粮（水稻）区的一个生态系统中各种生物关系的部分示意图，请依此图分析作答：（1）在此生态系统中，没有显示成分的是______．（2）这个生态系统的食物网中共有______条食-七年级生物
• 如图为一个池塘生态系统示意图，池塘内有水草、浮萍、水绵、鱼、虾等生物，请分析回答：（1）在该生态系统中，消费者有______．图中没有画出的生物部分是______，它们在生态系统-七年级生物
• “稻花香里说丰年，听取蛙声一片”，这是南宋诗人辛弃疾的千古名句．它描绘了美丽的田园风光，也道出农田生态系统中“丰年”与“蛙声”的某种关系，请你根据生态学的有关知识回答：（-七年级生物
• 将下列句子变为否定句。1. She's a tall girl. ____________________________. 2. It's yours, too. _______
• You ________ play with the knife. You ________hurt yourself.A．mustn’t; mayB．mustn’t; mustC．shouldn’t
• You had better _________ wine because you have to drive back home.A．not drinkB．don’t drinkC．not to d
• Her nameAlice.[ ]A. amB. is C. areD. be-七年级英语
• In the classroom there ________ a teacher’s desk and some desks and chairs .[ ]A. is B. are C. be-七年
• --- What’s on the table ?--- There ________ some apples.[ ]A. have B. is C. are-七年级英语
• -_________ the elephants African?-Yes, they____________. [ ]A. Are, areB. Do, doC. Is, isD. Does, do
• 下列食物链不正确的是（）A．青虫→山雀→雀鹰B．牧草→野兔→狐狸C．水草→小虾→黑鱼D．草→蝗虫→山雀→雀鹰-七年级生物
• －Must I go and get some water now?－No, you __________.A．needn'tB．may notC．mustn'tD．don�
• －_________ we go at 7.30 ? －What about __________ it a little earlier ?A．Shall ,makingB．Shall , to
• 如图表示某农田中生活的几种生物，请据图回答：（1）这个生态系统的能量来自稻的______作用所固定的______．（2）该农田生态系统的生产者是______；在该生态系统中，没有画出的生物-六年级生物
• 下列各项中，属于生产者的是（）A．能生产产品的工人B．能制造食物的加工厂C．能制造有机物的植物D．能吸收树干营养的真菌-七年级生物
• You_____a teacher. I_____a student. My sister_____a student, too. [ ]A. am; is; are B. is; are; amC.
• What the students doing?[ ]A. is B. areC. doD. does-七年级英语
• ---Is John coming by train? ---He should, but he ________ not. He likes driving his car.A．mustB．canC
• —Where _____ the flowers?—They are on the floor.[ ]A. is B. be C. am D. are-七年级英语
• Li Lei can’t go hiking with us today,because he take care of his sick mother.A．has toB．mayC．mustn’tD
• ----:I get up at five o'clock tomorrow morning?----: No, you.A．Must; can'tB．Must; needn�
• －Mum, must I stay there the whole day?－No, you__________. You__________ come back after lunch, of yo
• Look! ______ Some fishon the table, and some apples ______ in the box. [ ]A. is;areB. are;isC. are;a
• The boy ______healthy ________he cloesn’t like to exercise.[ ]A. doesn't ; so B. isn't ; s
• 句型转换。 1. He started dancing at the age of four.(改为同义句)He started dancing_____ ______ ___________ ___
• _________you ___________for England tomorrow?[ ]A. Do; leave B. Will; leaving C. Are; leaving D. Do;
• 蘑菇在生态系统中属于（）A．分解者B．消费者C．生产者D．植物-七年级生物
• 菟丝子是一种缺乏叶绿素的开花植物，可吸附于其他绿色植物上以取得养分，故菟丝子在生态系统中的角色是（）A．生产者B．分解者C．消费者D．既是分解者又是消费者-九年级生物
• 人在生态系统中担任的角色是（）A．生产者B．消费者C．生产者和消费者D．分解者-七年级生物
• ）The red bike _______be Hu’s. She has a blue bike.A．mustB．mightC．canD．can’t-九年级英语