下列属于学习行为的是[]A．大山雀偷饮牛奶B．蜘蛛结网C．婴儿吮奶D．母鸡育雏-七年级生物

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• 阅读下列短文，然后回答问题：夏季在海滨游玩，若赶上退潮，在礁石之间的水洼中，往往能见到海葵。海葵呈圆柱形，十分柔软，极易收缩。它吸收水中的氧，将废物排到水中，它的-七年级生物
• 下面生物个体中，构成与其他三项不同的是[]A．杜鹃B．烟草花叶病毒C．放线菌D．向日葵-七年级生物
• 按照生物的形态结构特点可以将生物划分为[]A．植物、动物和其他生物B．脊椎动物和无脊椎动物C．单细胞生物和多细胞生物D．陆生动物和水生动物-七年级生物
• 下列生物中，不是由细胞构成的是[]A．噬菌体B．细菌C．动物D．植物-七年级生物
• 植物的根向地生长、动物会逃避有害的刺激，这说明[]A．生物都能生长B．生物都能对刺激作出反应C．生物都能适应环境并影响环境D．生物都具有遗传和变异的特征-七年级生物
• 一个多细胞生物体的所有细胞来自于[]A．细胞分裂B．细胞生长C．同一个受精卵D．细胞分化-七年级生物
• 下列属于生物的是[]A．恐龙骨骼B．木马C．小草D．钟乳石-七年级生物
• 壁虎遇到敌害会断尾逃脱，这一现象说明了生物[]A．能够由小长大B．繁殖后代C．对外界刺激会产生反应D．影响环境-七年级生物
• 下列除哪项外，都是生命特征的表现[]A．蜘蛛织网B．种子萌发C．森林起火D．月季开花-七年级生物
• Marydoesn'tlikeblue,sohermother____buysblueclothesforher.[ ]A.alwaysB.usually C.oftenD.never -七
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• I ______ go to school by bike because I can't ride a bike.[ ]A. never B. something C. often D.
• I was doing the same job ___________, and I really feel exhausted. [ ]A. the whole time B. the all t
• Have you even seen him?A.before B. ago C. just now-八年级英语
• Sally has no time to visit her parents, but she makes telephone calls. She loves them so much.A. har
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• It was very cold outside and we hadto go, so we had to stay at home .A．somewhereB．nowhereC．anywhereD
• We have to stay at home instead of going finishing because it is raining ________________.A．badlyB．
• ________, his new neighbor fell off his bike last week, and he was badly hurt.A．LuckilyB．LuckyC．Unlu
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• --- The little girl dances so well. Where was she trained?-- She learns all by herself. She ______ g
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• The sun is_____bigger than the earth. A．moreB．manyC．muchD．most-八年级英语
• The Internet is really useful to us. We can ________ find the information we need.A．slowB．slowlyC．ea
• The text is very easy for you. There are _____ new words in it.A．a fewB．a littleC．fewD．little-八年级英语
• How are you getting on with your work?—I can’t do it any longer. I’ll have to get help.A．carefullyB．
• Our garden is very beautiful, ____ in spring. A．speciallyB．especiallyC．mainlyD．nearly-九年级英语
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• A smile costs nothing, but gives so ______.A．littleB．fewC．manyD．much-九年级英语
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• 下列关于生物圈的叙述，不正确的是()A．生物圈是最大的生态系统B．生物圈是地球上所有生物及其生活环境的总和C．人类可以建造比生物圈更好的家园D．生物圈是一个统一的整体-七年级生物
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