1. "Some people say that studying with music can
be counterproductive, but I think music can help you study better if you
choose the right kind. Lyrics distract me when I am trying to read print,
but an up-tempo beat without words keeps me focused on my studies."
What does the underlined word mean?
Ochanging productivity
being productive again
Ooffsetting productivity
2. From the early centuries until the 17th century practically no progress