To the mod, pls ban this person (or bot)

By comparing part 1 and 2 of polar opposites what does it mean by polar opposites

Write an email to your favourite author/poet inviting him/her to attend a literature festival organised in your school

Explain the effect of the juxtaposition of the following lines that serve as a beginniing to the new section that begins on page nine: anguish. german soldiers-with their steel helmets and their deaths-head emblem. still, our first impressions of the germans were rather reassuring.