无土栽培是指[]A．把植物直接栽培在人、畜的粪尿中B．直接将植物栽培在水中的栽培方式C．不需要给植物施无机盐的栽培方式D．把植物栽培在按植物需要的无机盐比例配制的营养液中-八年级生物

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• Though________money,hisparentsmanagedtosendhimtoschool.A．lackedB．lackingofC．lackofD．lacking-高二英语
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• For a moment nothing happened．Then _____ that the war was over．A．came the newsB．the news cameC．did t
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• Among the children ______ the professor telling stories.A．sit B．satC．has satD．had sat-高二英语
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• Only when the government increases affordable homes for low-income groups . A．the imbalance of deman
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• This is not my story, nor ______ the whole story. My story plays out differently.A．is thereB．there i
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• What we have to admit is that never in the past thirty years __________ so greatly as today.A．has Ch
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• Nowhere else in such a small town, I think, ___ a book as good as this one.A．can you getB．does you g
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• that they may eventually reduce the amount of labor needed on construction sites by 90 per-cent.A．Su