The underlined word "heritage" in paragraph 1 is closest in meaning to ______.
A. history
B. civilization
C. tradition
D. feature
【B13】
A. born
B. given
C. having
D. covered
听力原文：What are the effects caused by tiredness in workers？
(31)
A. Having more accidents.
B. Losing mental and physical abilities.
C. Spending more time working.
D. Needing more education and training.
【B16】
A. in
B. at
C. by
D. with
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