单选题The machine he originated and perfected has no modern _____ or ancient prototype.AsuccessorBancestorCforefatherDpredecessor
单选题
The machine he originated and perfected has no modern _____ or ancient prototype.
A
successor
B
ancestor
C
forefather
D
predecessor
参考解析
解析：
predecessor前任；（被取代的）原有事物。successor接任者。ancestor祖先。forefather祖先。
predecessor前任；（被取代的）原有事物。successor接任者。ancestor祖先。forefather祖先。
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