单句改错。( )1.WhatthisinEnglish? A B CD()2.Isthisyou pencil case? A BC D ()3.Isthathisa room? A B C D___

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• The blue sweater _____only twenty-two dollars.[ ]A. isB. amC. are D. be-七年级英语
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• 根据下面的文字及生态系统中的食物关系图回答有关问题：森林里生活着高大的乔木、低矮的灌木、草本植物等绿色植物．有许多鸟类在此栖息，有的鸟吃草籽，有的鸟是杂食性鸟（既吃-生物
• 南北长约2.5公里，东西最宽处约800米，总面积为141.62公顷的深圳“绿肺”--中心公园，是深圳靓丽的风景．这里树木葱郁，绿草如茵，植被（绿量）丰富，福田河从中穿流而过，还栖-生物
• 句型转换。1. You'll find the flowers somewhere.(改为否定句) You ______find the flowers______.2. He didn&#
• ---Must I do the work today?---No, you _______. You may do it tomorrow.A．can’tB．mustn’tC．shouldn’tD
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• my school ID card.A．This’sB．that’sC．this isD．That’s-七年级英语
• __________ my cousin.[ ]A. He'sB. HerC. SheD. His-七年级英语
• —you please go to the movies with me? —Sorry, I can't. Ido my homework. [ ]A. Can; have to B. C
• —Ithink your pants ______ very nice. —Thank you.[]A. beB. isC. amD. are-七年级英语
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• 我们人类属于生态系统中的（）A．生产者B．消费者C．分解者D．A、B、C都不是-生物
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• --Morn, must I clean my room now? --No, you . You can do it tomorrow.A．can'tB．needn'tC．mus
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• 人类生命活动中所利用的能量最终来自（）A．地球B．植物C．太阳D．食物-生物
• I'm sorry. I _______ go now. My classmate is waiting for me at the gate of the school. [ ]A. ca
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• 如图为一个池塘生态系统，请回答问题（1）水草、浮游等植物是生态系统中的______；鱼、虾等动物是生态系统中的______；还有一些我们看不到的生物它们是生态系统中的______（2）请-生物
• 下列关于生态系统的能量流动示意图中，正确的是（）A．太阳能→生产者→消费者→分解者B．太阳能→生产者→消费者→生产者C．D．-生物
• 如果将一条死鱼埋在地下，一段时间后发现鱼肉“不见”了，这是生态系统中（）的作用．A．生产者B．消费者C．分解者D．以上都不是-生物
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• 在一个池塘生态系统中属于生产者的是（）A．水草、浮游植物B．浮游动物C．植食性鱼类D．肉食性鱼类-生物
• 如图是表示生态系统中生产者、消费者和分解者之间的相互关系．（1）食物链和食物网是生态系统的结构基础．写出图中的一条食物链______（2）生态系统的物质循环是指组成生物体的物质-生物
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• There________ some milk in the bottle. [ ]A. isB. areC. be -八年级英语
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