实验过程中的操作A的名称是____.你认为____(选“甲”或“乙”)组实验方法比 较理想,理由____.
阅读诗歌,回答问题。
野步
周密
麦陇风来翠浪斜,草根肥水噪新蛙。
羡他无事双蝴蝶,烂醉东风野草花。
对于某些离子的检验及结论一定正确的是( )
—Bill didn't go to school this morning, did he?
—_______. Though he was not feeling very well.