题目

第三节 完形填空（共20小题；每小题1.5分，满分30分） 阅读下面短文，从短文后所给各题的四个选项(A、B、C和D)中， 选出可以填入空白处的最佳选项。 Since my family were not going to be helpful, I decided I would look for one job by myself and not tell them about it till I'd got one.               I had seen an agency advertised in a local newspaper. I rushed out of the   21_   in search of it. I was wildly excited, and as    22_  as if I were going on the stage. Finding the    23_  quite easily, I ran breathlessly复数z=i2（i是虚数单位）的虚部是（　　） A、iB、-1C、1D、0