(2013·泰安模拟)Althoughto be the best in a recent science competition, the student remains modest.A．jud

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• (2013·湖南，35)Not once________to Michael that he could one day become a top student in his class.A．occ
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• 老王种的庄稼植株矮小、瘦弱，叶片发黄，可能是缺乏[]A．含氮的无机盐B．含钾的无机盐C．含磷的无机盐D．水-七年级生物
• 植物生长需要最多的无机盐是[]A．含氮、磷、铁的无机盐B．含氮、磷、钾的无机盐C．含氮、磷、镁的无机盐D．含氮、磷、钠的无机盐-七年级生物
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