菜农给青菜施农家肥主要是给青菜的生长提供[]A．无机盐B．有机物C．水D．能量-七年级生物

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• 下图是某同学设计的一组实验：在两个大小几乎相同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-八年级生物
• —I want to get a license. What do you think I should do? —Only with enough practice ______ the driv
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