语法填空
One evening, I came across one of son's papers with a failing grade.I almost started to yell his name 1 I suddenly remembered he was in bed asleep.It was his 2 (nine) year of school and his
academic career seemed to be in ruins, so I was angry.But I put the paper aside and turned to the 3
one, at the top of which were written "My dad".It was a poem about me, 4 included the time I had to
leave work to take him to the hospital because he 5 (break) his finger.So careless was I 6 I had
forgotten all about that.He talked about how I wrestled with him in the evenings and 7 good many
other things.That paper was suddenly not nearly as important as it had been a few minutes 8 .I don't
know if he planted the poem next to the failing grade to 9 (soft) the blow, but it worked.Instead of a
severe lecture, I talked to him about the poem as well as the failed homework, and it began to make
sense to me that I could include praise along 10 constructive criticism.
溶液（约1mol/L）、
溶液（约1mol/L）及发泡剂．使用时发生的化学反应方程式是__________________________．
代替