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
Toronto residents are already wary of going to restaurants, ridership has dropped on public （）, and industry watchers say the decline in tourism has been devastating.
浏览：473Toronto residents are already wary of going to restaurants, ridership has dropped on public （）, and industry watchers say the decline in tourism has been devastating. A.transitB.rendezvousC.gratitudeD.territory 正确答案：transit
