—______ I take the magazine away from the reading room?— No, you mustn’t. You ______ read it only he

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• 生产者与消费者的区别在于（）A．生产者是以消费者为食的生物B．能否利用光能（或化学能）将无机物合成储存能量的有机物C．消费者是直接以生产者为食的生物D．消费者能利用现成的有机-生物
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• — Must I feed the goldfish now? — No, you ______. But you must do it before supper.A．needn’tB．mustn’
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• –Whose notebook is this? Is it Julie’s? –It _________be hers, she has gone to Beijing. A. mustB. mus
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• Kate and I _____ good friends.[ ]A. areB. isC. amD. be-七年级英语
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• There a heavy rain in the north of China tomorrow. [ ]A. will haveB. will has C. will be D. be-七年级英语
• 植物是生物圈中的______者，动物是生物圈中的______者，大部分腐生微生物是生物圈中的______者．-生物
• 仔细观察图，填写有关内容：（1）该食物网共有______条食物链，请写出最长的一条食物链：______．（2）在该食物网中，生产者是______．-生物
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• 用助动词和情态动词do, does, don't, doesn't, is, am, are, be, can, can't填空1. —Does he have a ba
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• Red good luck. [ ]A. thinksB. meansC. looks D. hears-七年级英语
• 观察图，据图回答下列问题：（1）生态系统中，图中A是______者，B是______者．（2）从图中我们观察到生态系统中的分解者是______，它们把动植物的遗体分解成______、水和无机盐．（3-
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• 在一块农田里，稻卷叶虫，蝗虫是危害水稻的害虫，青蛙是捕捉害虫的能手．那么，在这个生态系统中，这块稻田的水稻是______，其作用是______，蝗虫和青蛙是______，在这块稻田-生物
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