30. It may be concluded from the information given in the passage that ...
A) it is difficult to determine the composer of a piece of music without being told.
B) there was little variation in the style of music produced in the 19th century.
C) composers in the 19th century were known for their characteristic styles.
D) large groups of composers worked together on most 19th century projects.
VARIANT 74
1. Ron knows … that one is supposed to know about computers.
A) anything B) everything C) somebody D) none
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