問題詳情

A Singapore-based biotech company claims _______ human embryonic stem cellsdesigned for clinical use.
(A)has created
(B)create
(C)will create
(D)to have created 
(E) creating

參考答案

答案:D
難度:適中0.402985
統計:A(62),B(12),C(17),D(108),E(32)

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