【例2】某中学生物兴趣小组在进行西红柿无土栽培的实验过程中,

QyBodHRwOi8vd3d3LmllYy5jaAAAAAAAAAAAAAAAFklFQyBodHRwOi8vd3d3LmllYy5jaAAAnKCCKQXkRe4zHTWlzIsn939PelFssXQCldSNDVRK4UA6gaVAZCKxOUEW1p6KjQBoRlHcGq www.147ttt.com京香juliamidd994