问题 问答题 简答题

简述改良碱土的根本目的

答案

参考答案:

根本目的在于以交换性钙取代交换性钠来减小ESP,改良物理性状。

改错题

One day I told Mr Wang,our math teacher,was ill.                                                                             61.________

I was worried about him and went to see him after the school.                               62.________

When I enter his room,he struggled up to welcome                                              63.________

me.I let him lay down again.Mr Wang looked pale.                                               64.________

I asked about his trouble.He said he was having                                                    65.________

a bad cold.Then he had a bad cough.After take some                                             66.________

medicine he was getting better.He asked me that we                                              67.________

liked the teacher who took place.When he heard                                                   68.________

everything was all right,I could see he was pleasing.                                             69.________

Finally I asked him don’t to worry about the work                                                70.________

and have a good rest.

判断题