— Alice, could you help me ________ meat? I want to make some dumplings for dinner.
— OK. I'll do it right away.
去年我市出现了严重旱灾,春节期间温家宝总理亲临曲阜视察灾情,并做出重要部署﹣﹣严防因干旱导致的农作物减产甚至绝收.从中可以看出( )
①制备培养基时 ②梯度稀释时 ③倒平板时 ④涂布时 ⑤培养基上长出菌落时.