植物体正常生活需要量最大的无机盐是[]A．氮、磷、钾B．镁、钙、铁C．氮、磷、铁D．硼、磷、锌-七年级生物

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• These problems, ________, will seriously affect the growth of teenagers and even the nation’s future
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• Little ________ that we were watching his every move，so he seemed to be going his own way in this bu
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• Generally speaking, if ______ strictly following the instructions, the electric bike is not as dange
• 参观沈阳世博园的同学对几株上面结满了巨大番茄的“番茄树”啧啧称奇，这些“番茄树”不是种植在土壤里，而是种植在富含营养液的水箱里。采用的这项生物技术是[]A．组织培养B．无土-七年级生物
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• (2013·高考江西卷)Only when he apologizes for his rudeness________to him again.A．I will speakB．will I spea
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• Next door to ours ______, who has achieved much in physics.A．where lives an old scientistB．where do
• On the National Day, up _____ into the air. Then the crowed cheered.A．the balloons wentB．went the ba
• 用以下三种水（①蒸馏水②河水③稻田中的浑水）分别培养同样大小的番茄苗，一个月之后，幼苗的高度可能是[]A．①②③同样高B．①最高，②次之，③最矮C．①②一样，③最矮D．③最高，②次之，①最-七年级生物
• 某同学在三个地点考察同一种植物的根系分布情况，绘制根系分布图如下。(1)该植物的根系属于那种类型？(2)这三种分布情况可能受哪种因素的影响？(3)试推测三个地方该植物根系不-七年级生物
• —Did Linda see the traffic accident?—No，no sooner ________ than it happened.A．had she goneB．she had
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• (2013·高考湖南卷)Not once________to Michael that he could one day become a top student in his class.A．occ
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• 下图是某同学设计的一组实验：在两个大小相似的萝卜中各挖一个大小相等的洞，向甲、乙萝卜的洞中分别注入等量的清水和浓盐水，各用一个装有玻璃管的橡皮塞塞住洞口，记下玻璃-七年级生物
• 将四株大小差不多的同一种植物的幼苗，分别培养在下列液体中，能正常生长的是[]A．糖水B．盐水C．土壤浸出液D．自来水-七年级生物
• 植物生活需要最多的无机盐是含有哪些成分的无机盐？[]A．氮、磷、钾B．氮、磷、铁C．磷、钾、硼D．氮、硼、锌-七年级生物
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• 一位同学猜想：绿色植物需要沙子才能更健康的生长。为了证明她的猜想，她准备了两盆植物，其中一盆所处的环境和条件如下图所示，则另一盆所处的环境和条件应该是[]A．B．C．D．-七年级生物
• 植物生活中需要量最大的三种无机盐是[]A．含氮、磷、钾的无机盐B．含钙、铁、钾的无机盐C．含氮、镁、锌的无机盐D．含钙、磷、硼的无机盐-七年级生物
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• 请你设计一个实验，验证植物的生长需要无机盐。-七年级生物