The Goethe-Institut offers German courses at level C1, as well as the Goethe-Zertifikat C1 examination. Level C1 is the fifth of six levels on the competence scale of the Common European Framework of ...

It certifies that candidates have acquired advanced language skills and corresponds to the fifth level (C1) of the six-level scale of competence laid down in the ... produce well-structured and ...

After years of development, Apple finally introduced its new proprietary C1 modem, which powers cellular connectivity on the ...