问题
单项选择题
Only individual benefactors and ad hoc grants have made possible the ecological surveys already undertaken.
A.additional
B.governmental
C.special
D.organizational
答案
参考答案:C
解析:形容词辨析。ad hoc形容词或副词:特别的(地),临机应变的(地),为此时此地某一特定目的(的)。A.additional另外的,附加的;B.governmental政府的,政府管辖的;C.special特别的,专门的;D.organizational组织的。