单选题
[2010.04]We have greatly ______ the procedure according to the chairman's suggestion.
A.stimulated
B.perceived
C.obscured
D.simplified
正确答案：D
答案解析：[译文]按照主席的提议我们已经大大地简化了步骤。[试题分析]本题考查词义辨析。[详细解答]动词的词义选取。