“落红本是无情物，化做春泥更护花”使落花化作春泥的生物是生态系统中的（）A．分解者B．消费者C．生产者D．非生物部分-生物

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• —_____she come this afternoon? —No, she can't. Because her mother is ill.[ ]A. Can B. WouldC. C
• 请根据图示生态系统回答问题：（1）图中太阳能、水、二氧化碳、氮气都属于生态系统中的______．（2）图中所示蝗虫取食______，蝗虫身体分为______三部分，有______对翅，______对足
• 看看你的应变能力，用所给单词的适当形式填空。1.I can’t find the museum. What_____ I _____(do)?2.I’m sorry I didn’t finish _
• You are too tired .You ______ rest and you ______ go to the movies.[ ]A. shouldn't; shouldB. sh
• -I can't get to sleep at night.-You ____drink coffee at night.[ ]A.shouls B.should'tC.need
• --____ you come to my birthday party tomorrow, Robert? --I’m afraid not. I have to study for my exa
• 在生态系统中，组成生物体的化学元素从无机环境开始，经______、______和______，又回到无机环境，就完成了一个循环过程，我们称之为生态系统的物质循环．-生物
• 在生态系统中，能把有机物变成二氧化碳和水等返回无机环境中的是（）A．生产者B．消费者C．分解者D．生产者、消费者和分解者-生物
• 动物和细菌、真菌一样能促进生态系统的物质循环，故动物是（）A．生产者B．消费者C．分解者D．既是消费者，又是分解者-生物
• Tom _____ be murderer (凶手) because I saw he killed (杀死) her.[ ]A. must B. canC. may D. will-八年级英语
• 根据下图这个生态系统中的生物，分析回答有关问题：（1）在这个生态系统中，消费者是指______，分解者是指______．（2）影响草生活的生态因素除了图中标出的外，还有______．（3）这个-生物
• —_____ I play computer, Mum?—No, you _____do your homework first.[ ]A.Can; may not B.May; needn'
• —Is Mr. Green in the office?—No, he ________ be in the office. Look, the light in the office is off.
• —_____ you bring some things for me? —Yes, I can.[ ]A. Do B. AreC. Can D. Have-七年级英语
• though today is bright, it_____ be rainy tomorrow.[ ]A. can B. isC. willD. must-八年级英语
• 非生物成分包括______、______、______和______等．它们为生物提供______、______和______．-生物
• 在生态系统中，下列生物属于分解者的是（）A．羊B．牛C．蘑菇D．草-生物
• — Must we keep the windows ______ all the time? — No, you ______.[ ]A. closed; mustn'tB. close;
• 生态系统中物质循环的特点是[]A．周而复始的B．逐级递减的C．单向的D．双向的-八年级生物
• 用括号里所单词的适当形式填空。1.I ___(will) like to buy a tree.2.Please put these ____(photo) on the wall.3.Let ___
• 生物的尸体经过微生物分解后，可为绿色植物提供二氧化碳、水和无机盐______．-生物
• —Must we finish our homework before dinner?—No, you _____.[ ]A. mustn'tB. mustC. needn'tD.
• You _____ right.[ ]A. may beB. maybeC. can be-八年级英语
• 请根据如图所示生态系统，完成下列问题．（1）图中太阳能、水、二氧化碳、氮气都属于生态系统中的______．（2）图中所示蝗虫取食______，有______对足，善于______．（3）如果该生态系-
• It is raining hard outside, so we _____ stay in the classroom. [ ]A. must B. can C. have to D. might
• 根据你所学的生物学知识判断下列说法正确的是（）A．“有收无收在于水，收多收少在于肥”，这句话表明了植物的生长需要水和有机物B．既能生活在水中又能生活在陆地上的动物都属于两-生物
• You_____ smoke when you see the sign.[ ]A. mustB. shouldC. mustn'tD. needn't-八年级英语
• You play computer games for a long time. It’s bad for your eyes.A．shouldB．shouldn’tC．couldD．don’t ha
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• —Do we have to finish our homework this afternoon? —Yes, you _______. [ ]A. must B. can C. may D. ne
• 句型转换。根据所给提示，完成句型转换。每空一词，含缩略词。 1. He can play the guitar. (改为一般疑问句,并作否定回答)________ he play the guitar
• —I can't get to sleep at night.—You ____drink coffee at night.[ ]A. shoulds B. shouldn'tC.
• 关于生产者、消费者、分解者的叙述，错误的是（）A．能将有机物分解为无机物的生物都叫分解者B．消费者的身体细胞表面一般都没有细胞壁C．在光下能放出氧的生物一般都是生产者D．生-生物
• 在草原生态系统的一些生物部分和非生物部分中，有阳光，草，水和无机盐、牛，细菌等．请根据以上说明回答．（1）在这个生态系统中，生产者是______，消费者是______．二者之间存在-生物
• Multiple choice. （5分）1. He mustn’t ________ a car _________.A drives, dangerously B drive, dangerous
• -Mom, _____ I go and play for a moment?-OK. [ ]A. do B. willC. shallD. must-八年级英语
• —______ you hear me clearly from far away?—Sorry. I can't.Say it again, will you?[ ]A. May B. n
• —I can't find my watch. Where is it?—It _____ in your bag. [ ]A.canB.may C.maybeD. may be-八年级英语
• 句型转换。1. I can drive a car. (改为否定句)I ______ ______ a car. 2. She can draw well. (改为一般疑问句) ______ she
• 下列有关生态系统的描述，正确的是（）A．生态系统中的物质流动是单向的B．生态系统是由生产者、消费者和分解者组成的C．生态系统内的能量是通过食物链和食物网来传递的D．研究生态-生物
• That dictionary ______ belong to Gina．Tom’s name is on it． A．must B．can’t C．could-九年级英语
• He _____ the work today if he doesn't want to.[ ]A. need't finishB. had finishedC. can
• 下列生物中属于生产者的是（）A．青菜B．金鱼C．细菌D．蘑菇-生物
• —Must I finish writing the composition today? —Yes, you ____. [ ]A. must B. can C. need D. may -八年级英
• My mother can play computer games but my father _____ . [ ]A. isn't B. doesn't C. aren
• 太阳的能量最先进入生态系统的（）A．生产者体内B．草食动物体内C．肉食动物体内D．分解者体内-生物
• “一山不容二虎”这句谚语，用生态学的观点来解释应是（）A．虎的性情孤僻，不喜欢群居B．虎是营养级别很高的生物，可得到的能量少，个体数量也就少C．虎的性情凶残，把幼虎吃掉了D-生物
• —May I try on the jeans?—Of course you _____.[ ]A. shouldB. need C. can D. must-九年级英语
• I ____like to help kids with their schoolwork. [ ]A. could B. wouldC. shouldD. will-九年级英语
• —Where _______ you like to go? —I’d like to go to France. [ ]A. will B. do C. would D. did -九年级英语