Zhang Heng and Seismological Innovation
Which of the following Chinese innovations is attributed to the historical figure Zhang Heng for its contribution to seismology?
A
火药 (Huǒyào)
B
活字印刷术 (Huózì yìnshuā shù)
C
指南针 (Zhǐnánzhēn)
D
候風地動儀 (Hòufēng dìdòngyí)
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