植物生长中需要多种无机盐，其中需要量最大的是含_________、_________、_________的无机盐。-七年级生物

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• 在下列作物的生长中，应该注意多施加钾盐的一组植物是[]A．甘薯、马铃薯B．番茄、花生C．白菜、油菜D．菠菜、芹菜-七年级生物
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• 在下列哪种溶液中培养，绿色植物会生长不良[]A．土壤浸出液B．蒸馏水C．无土栽培营养液D．自来水-七年级生物
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• While ______ in Scotland, he made friends with the natives there.A．workingB．workedC．he worksD．he is
• 无机盐被植物体吸收的原因是[]A．根有吸收无机盐的结构B．无机盐能溶解在水中C．根毛细胞专门能吸收无机盐D．根毛细胞有选择地吸收无机盐-七年级生物
• _____ fired, your health care and other benefits will not be immediately cut off. A．Would you beB．Sh
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• 按照下图的方法，取2个大小相同的萝卜，各从顶端向下挖一个大小相同的洞，在A萝卜洞内装上浓盐水，在B萝卜洞内装上清水，过一段时间后，观察萝卜洞内水位的变化并注意用手摸-七年级生物
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• 小明将一根新鲜的黄瓜切成若干薄片后，分别泡在清水和浓盐水中(如下图所示)，则哪种液体中的黄瓜薄片会失水变软[]A．只有清水B．只有浓盐水C．两者都会D．两者都不会-七年级生物
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