A recent study has ________ an unexpected conclusion that the African elephant should be divided into two different species.
A．kept up with B．made up with
C．caught up with D．come up with
A recent study has ________ an unexpected conclusion that the African elephant should be divided into two different species.
A．kept up with B．made up with
C．caught up with D．come up with
D [考查动词短语辨析。句意
：最近的一项研究得出一个意外结论，非洲象应被
分成两个不同种类。keep up with“跟上”；make up with“和好”；catch up with“追上”；come up with “提出”。D项符合句意。]