问题补充:
My father has worked for 20 years in the field of medicine, so he has a huge amount of experience.
A. achieved
B. piled
C. completed
D. accumulated
答案:
A. achieved
B. piled
C. completed
(答案→)D. accumulated
解析:动词词义辨析。A获得;得到;B堆积;C完成;D积累;句意:我的父亲在医学领域工作了,所以他积累了很多的经验。根据句意说明D正确。