【单选题】By 1800,hand printers could not supply enough books to satisfy [使满意] the demand.Books were not printed fast enough when hand-made paper and wooden hand presses were used.Fortunately [幸运地], about this ...
【单选题】By 1800,hand printers could not supply enough books to satisfy [使满意] the demand.Books were not printed fast enough when hand-made paper and wooden hand presses were used.Fortunately [幸运地],about this t...
A.
paper was made in sheets instead of rolls
B.
paper was made in rolls instead of sheets
C.
the quality of paper was improved
D.
the raw materials for paper became more readily available