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JamesWatt____thesteamengineandAlexanderFleming,anotherScot,discoveredpenicillin.A.inventedB.discoveredC.foundD.recognized
题目
JamesWatt____thesteamengineandAlexanderFleming,anotherScot,discoveredpenicillin.
A.invented
B.discovered
C.found
D.recognized