English & Language Usage第 107 / 120 题
What does the root word 'cardi' mean, as in 'cardiology'?
a.Lung
b.Brain
c.Heart
d.Kidney
解析
The root 'cardi' means 'heart.' Cardiology is the study of the heart. 'Pulmon' refers to lungs and 'nephr' refers to kidneys.
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