The piece of music ______The piece of music ______really beautiful.[ ]A. looks B. hears C. sounds D.

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• Students ought ______ the truth.A．told B．tellC．tellingD．to tell-九年级英语
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• 在生态系统中，猫头鹰获得能量最少的食物链是（）A．青草→鼠→蛇→猫头鹰B．青草→蝗虫→麻雀→蛇→猫头鹰C．青草→兔→猫头鹰D．青草→鼠→猫头鹰-生物
• 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-
• 改错题。( ) 1. —Are you Jack ? —Yes, I'm. A B C D()2. Who's your uncle? He's a doctor.A B
• Johnny, you _________play with the knife, you_________ hurt yourself. A．won’t; can’tB．mustn’t; may C
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• ---The man in a black suit _______ be our youth worker.---It _______ be him. I saw him in the classr
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• 如图为某生态系统碳循环示意图，图中ABCD分别代表生态系统的成分，①--⑦代表碳元素的传递过程，请据图回答：（1）图中C是指______，D是指______．（2）碳元素通过______作用由生物进-
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• The flowers ________ every day, or they will die.A．must waterB．can be wateredC．should waterD．must be
• 下列说法正确的是（）A．生物与非生物具有统一性的一面B．生物与非生物没有任何联系C．从结构层次看，皮肤属于-组织D．细胞分裂中最重要的变化是细胞膜的形成-生物
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• 近年来全国各地发展了“农作物--猪--沼气--茶”等生态农业模式，猪粪及秸秆经发酵产生沼气和渣水．沼气可以燃烧，渣水可为茶林及农作物施肥．将猪粪发酵成沼气和渣水的微生物种类-生物
• 某森林公园动植物资源丰富，生活着大鲵（俗称娃娃鱼）、黄腹角雉、五步蛇和连香树等珍稀物种，该森林公园中的大鲵是生态系统中的（）A．非生物部分B．分解者C．生产者D．消费者-生物
• 改错题。1. Each of the students in our class have an English-Chinese dictionary. 2. We don’t go to schoo
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• 请根据句意从方框中选择合适的动词,并用其适当时态填空,使句子通顺。teachflybe wait have 1. How many students _____________ there in yo