問題詳情
27. Dr. Wang has ______ research on genetic engineering since the early 80s. From then on, his research group has made many scientificbreakthroughs.
(A) forecast
(B) negotiated
(C) retired
(D) pioneered
(A) forecast
(B) negotiated
(C) retired
(D) pioneered
參考答案
答案:D
難度:適中0.5
統計:A(1),B(0),C(0),D(1),E(0)
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