In the late 1940s, experimenting with high-frequency radio waves, Percy L. Spencer of the Raytheon Company soon invented the microwave (), which made millions of dollars for Raytheon and millions of bags of popcorn for kids everywhere.

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In the late 1940s, experimenting with high-frequency radio waves, Percy L. Spencer of the Raytheon Company soon invented the microwave (), which made millions of dollars for Raytheon and millions of bags of popcorn for kids everywhere.
A.bombB.prospectC.stoveD.oven

正确答案:oven

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