問題詳情
20. _____ introduction of sophisticated medical technology, micro-surgery has become an important means for re-attachingsevered fingers and toes, or even entire limbs.
(A) Because the
(B) With the
(C) It is for the
(D) The
參考答案
答案：B
難度：簡單0.782609
統計：A(2),B(18),C(0),D(3),E(0)