甲、乙、丙三位好朋友随机站成一排照合影，甲没有站在中间的概率为____ .
某市期末考试中，甲校满分人数占4%，乙校满分人数占5%，比较两校满分人数（ )
— Maggie, what you said may result in serious problems.
— I see. I was just telling the truth.
错误 改正方法
①____；____．
②____；____．
③____；____．
④____；____．
