问题
选择题
His long service with the education was with a thirty-year teaching qualification.
A．admitted
B．attributed
C．advocated
D．acknowledged
答案
答案：D
词义辨析。Admitted承认，认可；attributed认为是，把……归于；advocated 提倡，拥护；acknowledged获得，得到。句意：他长时间的投身于教育事业使他获得了从业30的教育证书。所以选D。