SORU: aşağıdaki parçaya göre cevaplayınız
It is clear from the passage that Gutenberg's invention of the printing press ----.
Reading on paper is so much a part of our lives that
it is hard to imagine anything could ever replace the
printed books we are used to. Before printed books
came in, books had to be copied by hand; this was
obviously a slow process and very expensive. Once
Gutenberg had invented an economical way to make
movable letters in the 15th century, it became
possible to produce reading material quickly,
comparatively cheaply and in large quantities. Since
then, the printed word has become a permanent part
of our everyday lives. So, how could anyone believe
that sales of electronic books will equal those of
paper books within a decade or so? Still, some
people think that they will.