如图能正确表示生态系统中草、兔、鹰数量关系的是（）A．B．C．D．-生物

更多内容推荐

• 一般情况下，在一个生态系统中，数量最少的生物是（）A．以植物为食的植食性动物B．以动物为食的肉食性动物C．能分解动植物遗体的微生物D．能进行光合作用的绿色植物-生物
• Next week, there ____________ a different New Year party on HNTV.A．is going to be B．are going to hav
• We ____ them and ____ yesterday’s singing competition.A. won, beat B. won, won C. beat, won-八年级英语
• 下面列举的是温带草原生态系统中的几种生物（1）连接的食物链有______条，写出里面任何一条食物链______（2）有毒物质DDT沿着食物链积累．该生态系统中，DDT积累得最多的生物是__-生物
• 用动词be 的适当形式填空1.-______ you at home last week?-Yes, I ________.2.-______ they away yesterday?-No, the
• The library is _____ the restaurant and the supermarket.A．nextB．nearC．betweenD．across-八年级英语
• Please write me and tell me yourself.A．with, forB．to, aboutC．to, toD．to, for-八年级英语
• _________ can I get to the libraryA．WhatB．WhereC．WhoD．How-八年级英语
• 属于分解者的一组生物是（）A．水藻和地衣B．细菌和病毒C．真菌和细菌D．地衣和鱼-生物
• 下图是生态系统中碳循环图解，图中的甲、乙、丙各是：[]A．甲是生产者，乙是消费者，丙是分解者B．甲是消费者，乙是生产者，丙是分解者C．甲是生产者，丙是消费者，乙是分解者D．-八年级生物
• What _____ you supposed_____when you are in Korea? [ ]A. do; to do B. are; to do C. are; doing D. ha
• —ThebestthingtodoinHainanIslandisscubadiving.Thefishandthecoralreefsarebeautiful.—That_______interes
• 消费者和生产者的关系是（）A．相互利用B．吃与被吃C．互惠互利D．相互竞争-生物
• –The banana is too big. Do I need ____?A. cut it up B. to cut it up C. to cut up it-八年级英语
• I have to tell you.A．anything interestingB．something interestingC．interesting anythingD．interesting
• ____ are you cleaning the house?Because I want to sweep away bad luck.A．WhatB．WhenC．WhyD．How-七年级英语
• —What ______ people in Korea supposed to do when they first meet?—They usually bow.[ ]A. are B. do C
• My grandmother _____ young in the red sweater. [ ]A .sounds B. looksC. sees D. listens-七年级英语
• I want to _______ a _______ basketball player, but my mother don't agree with me.[ ]A. be, prof
• －What do you think of the talent show in our school?－ I think teachers in Grade Two were ___________
• 下列不属于生态系统的是（）A．北海湿地B．养牛场的一群奶牛C．郊外的农田D．宋风山国家森林公园-生物
• —Where is Sally?—I’m not sure. Shein the library.A．mightB．mustC．will beD．may be-八年级英语
• 下列生物中，属于“分解者”的是（）A．蘑菇B．白菜C．青蛙D．蛔虫-生物
• I am going to play basketball this Saturday_____ I like basketball.A．soB．becauseC．alsoD．but-七年级英语
• Alan is looking forward to _____ on Saturday. A．outB．goes outC．go outD．going out-七年级英语
• Look! Those boys are ____ a bus.A．waiting forB．waitC．wait forD．waiting-七年级英语
• You'dbetter__________nexttime. [ ]A. careful B. becareful C. arecareofD. carefully -七年级英语
• Abookandapen______onthedesk.[ ]A. isB.areC.does-七年级英语
• 地球上某个特定的地域，一个相对封闭的生态系统内，为维持其中的动物长时间生活并正常繁衍后代，最重要的生态因素是（）A．空气B．水分C．食物D．能量-生物
• 植物通过______制造有机物，有机物种储存着来自______的______．植物制造的有机物不仅养活着自己，还为动物提供了______，因此，植物是生态系统的______．动物不能制造有机物，-生物
• －__________ can you finish your homework, Ben?－ In thirty minutes. A．How farB．How soonC．How longD．Ho
• 影响生态系统的因素往往分两类，一类是______，另一类是______，这两类因素往往______作用，______因素可以导致______因素的强化或弱化．-生物
• --Just a minute. I’ll go to get some apples for you.--Thanks, but you ______ get too many. One is en
• ---What are you going to do _____ Sunday morning?--- Nothing much.A．/B．onC．inD．at-七年级英语
• 生态系统是指：______．填写其组成：-生物
• 能量在食物链的流动过程中被多种生物逐步______，生态系统中的植物必须不断的从外界__________________，才能保证______的正常生活．因此______是生态系统的基础．与能量相比_
• 我们通过调查一个生态系统的活动，了解到生态系统由两种成分组成：分别是：______成分，例如阳光、空气等；______成分，例如能够进行光合作用制造有机物的绿色植物叫做______，-生物
• The girl _____ of medium build and_____ blonde hair.[ ]A. is ; is B. has ; hasC. has ; isD. is ; has
• Don't late for school.[ ]A. is B. be C. am D. was-七年级英语
• 校园内郁郁葱葱的樟树，在生态系统中属于（）A．生产者B．消费者C．分解者D．非生物部分-生物
• Chris Lee won the _________ for the best singers in 2009 Asia Song Festival. A．gradeB．resultC．prizeD
• Tom would rather _________than _________. A．stay at home , go outB．to stay at home , to go outC．to s
• The book_____ be jim’s because his name is on it.A. cant B. must C. can’t-七年级英语
• We usually ________CCTV news at 7:00 in the evening.A．watchB．watchesC．is watchingD．are watching-七年级英
• 以下关于能量在食物链中流动的叙述，正确的是（）A．从绿色植物流向植物性动物B．从太阳流向绿色植物C．从肉食性动物流向植食性动物D．从肉食性动物流向绿色植物-生物
• 阳光上的玻璃缸里有水草，养着各种观赏鱼，这个密封的玻璃缸就是一个（）A．生物圈B．生态系统C．非生物D．各种生物的群体-生物
• 如图为生产者、消费者、分解者之间的关系示意图，分析后请回答：（1）图中甲、乙、丙分别代表______、______和______．（2）在乙、丙、丁三类生物中，数量最多的是______，所含能量-生物
• 句型转换。①Tommy'sEnglishbookisonthetable.（改为否定句）Tommy'sEnglishbook_____ _____onthetable.②Mybas
• 用be的适当形式填空。1.These _____ myapples.2. Where_____yourchair?3. They_____inmybag.4. _____ theyunderthech
• —Let's play football after school. —That ______ good. [ ]A. smells B. sounds C. listens D. feel