43. According to the passage, modern dentistry dates from _____.
(A) 1400-1200 BC
(B) the mid 1600s
(C) the early 1700s
(D) the mid 1800s
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統計: A(7), B(28), C(198), D(46), E(0) #2914623
統計: A(7), B(28), C(198), D(46), E(0) #2914623