John Lennon and Paul _______ the main songwriters of the Beatles in 1960s. [ ]A. are B. is C. was D.

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• 一个生态系统，无论大小都是由（）A．生产者、消费者、分解者组成B．阳光、空气、水组成C．植物、动物、细菌、真菌组成D．生产者、消费者、分解者和非生物成分组成-生物
• 单项选择。There ______ a tree in front of the classroom last year, but there ______ now. [ ]A. is, isn�
• If I ______ you, I would give some flowers to her. [ ]A. am B.is C. was D. were -九年级英语
• 词汇考查。1. In five years, Sally will b a doctor.2. — You could write him a letter.— Sorry, I don't
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• 在一个池塘中，属于生产者的是（）A．虾B．水草C．小鱼D．青蛙-生物
• Alicebe at school because she phoned me from her home a minute ago.A．mustn’t B．isn’t able to C．may n
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• 如图表示其生态系统中物质循环的过程．请分析回答：（1）图中生态系统的生产者是______、分解者是______（用图中代码表示）．（2）图中①、③分别表示的生理过程是______、______；（提示
• 在食物链“水草→虾→鱼→鱼鹰”中，哪一环节含有的能量最多（）A．水草B．虾C．鱼D．鱼鹰-生物
• _____ socks 20 dollars? [ ]A. Is the B. Are they C. Are the D. Is that -七年级英语
• There __________ a teacher and some students in the classroom. [ ]A. is B. are C. have D. has-七年级英语
• 句型转换1. Tony is thirteen years old. (改为一般疑问句,并作肯定回答) —_____ Tony thirteen years old?—_____ ,he _____
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• My name ____ Jack. Liu Ying and Sun Mei ____ my friends.[ ]A. is; areB. is; isC. are; isD. is; am-七年
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• These broken pieces of plates don’t fit together, they ___________ parts of different ones.A．can’t b
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• 用所给词的正确形式填空。1. —How ___________ (be) your school trip? —It was great. 2. —___________ you __________
• There ________ 60 minutes in _______ hour .[ ]A. are ; an B. are ; a C. is ; the D. is ; an-七年级英语
• 右图为一个池塘的生态系统，池塘内有水草、浮萍、水绵、鱼、虾等生物．请根据学过的知识分析回答下列问题：（1）在该生态系统中，消费者是______；没有画出的生物成分是______．（-生物
• —Can the new railway station ____ as planned?—Sure, it completed in time, we’ll work two more hours
• 在农田生态系统中，小麦属于（）A．生产者B．消费者C．分解者D．非生物因素-生物
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• A ping-pong ball and a tennis ___ under the bed.[ ]A. is B. am C. areD. isnot -七年级英语
• 在一块稻田生态系统里，有杂草、虫子、青蛙、田鼠等．直接或间接地为动物提供食物的成分是______，而虫子、青蛙、田鼠的作用是______，还有一些默默无闻的成分是______，其作-生物
• You ______ your coffee before it turns cold.A．should drinkB．should drinksC．should drinkingD．should t
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• 如图是某草原生态系统的食物网图解，请据图回答．（1）该食物网中共有______条食物链．请写出其中最短的一条食物链______．（2）食草昆虫和鼠的关系是______．青蛙、蜘蛛、蛇等生物进-生物
• The piece of music ______The piece of music ______really beautiful.[ ]A. looks B. hears C. sounds D.
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• 如图是草原生态系统的食物网，请根据图回答：（1）该生态系统的生产者是______，直接以植物为食的消费者是______．（2）该食物网有______条食物链，最长的一条食物链为______．（3）如-
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