Questões de Concurso Público Instituto Rio Branco 2011 para Diplomata 2ª Etapa

Still in the fields of semantics and grammar of the text, judge if the items below are right (C) or wrong (E).

The words “crises” (l.16) and “millennia” (l.24), as well as theses and fulcra, can only be found in their plural forms.