after world war 2 ,technological___ in various fields have been madea.advances b.progresses c.drawbacks d.disadvantages

分类: 作业答案 • 2022-06-12 18:22:51

问题描述：

after world war 2 ,technological___ in various fields have been made
a.advances b.progresses c.drawbacks d.disadvantages

答

选b