在进行模拟保护色的探究实验中，“实验中的你”扮演的角色是（）A．猎物B．捕食者C．幸存者D．旁观者-生物

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• —Where is Tom?—He hasn't come to school today.I think hebe ill.[ ]A. has toB. shouldC. mayD. ne
• Look! Grandma with her grandsonsplaying happily in the garden now. [ ]A. are B. is C. was D. were -八
• Today is Wednesday. He _______ be at home. He _____ be at school.A．can’t; canB．can’t; mustC．mustn’t;
• 组成生态系统的成分是（）A．全部的植物、动物和微生物B．全部的生产者、消费者和分解者C．生产者、消费者、分解者以及非生物的物质和能量D．全部的生产者、消费者、分解者和环境中-生物
• 如图是草原生态系的食物网，请据图回答．（l）一个完整的草原生态系统，除了图中所示的各种生物外，还应包括______．（2）此生态系统中的生产者是______，它与消费者之间形成_____-生物
• 用所给词的适当形式填空。 1. Could you(help) me with my lessons? 2. Peter do the(dish) in a fast food restaurant.
• It _____ that he has been ill for a long time.[ ]A. seems B. looks C. looks as if D. seems as if-八年级
• 如图是生态系统中物质循环示意图，请你将其中缺少的部分填完整．-生物
• Your idea ________ good. [ ]A. see B. sound C. hears D. sounds -七年级英语
• You stand in line while waiting for the bus.A．mustn’tB．can’tC．are supposed toD．don’t-九年级英语
• —My house is very near a busy street. —It be very quiet. [ ]A. can B. must C. can't D. mustn�
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• 上右图是一个森林生态系统中的各种生物，请观察：（1）图中的生产者是______，消费者有______．（2）生产者和消费者之间的关系，主要是______与______的关系，这样它们之间就形成了-生物
• 动物不能自己制造有机物，它们直接或间接的以______为食，因而叫做______．-生物
• 一 ______ Mimi cute? 一 Yes, I think so. [ ]A. Doesn't B. Don't C. Aren't D. Isn't
• Thedish_____nice. [ ]A.sounds B.smells C.feels -八年级英语
• -- Who’s singing in the next room?--- It ____ be her . She went to New York yesterday eveningA．can’t
• 池塘生态系统中有鱼类、浮游动物、绿色水生植物、真菌等生物，则该生态系统中的物质和能量的流动是从哪类生物开始的（）A．绿色水生植物B．浮游动物C．鱼类D．真菌-生物
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• 如图是草原生态系统中的主要成员及食物关系，请据图回答下列问题：（1）图中所示的是生态系统的______部分．在生态系统中，植物是______，动物是______，细菌和真菌是______．（2）-生物
• —Mr. Wang __________ be in the office. The light is still on.—No, he __________ be. Because he phone
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• Put a bit of sugar in the coffee, and it will ______ better. [ ]A. sound B. taste C. look D. make -九
• I'msorrytohavekeptyouwaitinglong.Nevermind,I_______hereforonlyafewminutes.[ ]A. havebeen B. hav
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• I’d an English teacher an officer.A．rather be, thanB．to be, to beC．rather to be, thanD．rather be, th