问题
选择题
The adoption of orphans and physically challenged children has been a subject of public debate _______ a fire in an unregistered orphanage last month.
A．according to
B．in case of
C．ever since
D．such as
答案
答案：C
题目分析：考查介词短语辨析。句意：孤儿的收养和身体残疾的孩子，已经成了一个公众讨论的热点，自从上个月发生的一次非法收养院的火灾之后。A根据；B以防万一；C自从；D例如。ever since与现在完成时连用。故选C。