单选题If remote-controlled cars are more expensive than mechanical cars, and radio-controlled cars are more expensive than remote-controlled cars, which of the following statements must be true?AMechanical cars are the most expensive.BRadio-controlled cars are the most expensive.CRadio-controlled cars are cheaper than remote-controlled cars.DMechanical cars are more expensive than remote-controlled cars.
单选题
If remote-controlled cars are more expensive than mechanical cars, and radio-controlled cars are more expensive than remote-controlled cars, which of the following statements must be true?
A
Mechanical cars are the most expensive.
B
Radio-controlled cars are the most expensive.
C
Radio-controlled cars are cheaper than remote-controlled cars.
D
Mechanical cars are more expensive than remote-controlled cars.
参考解析
解析：
遥控车比机械车贵，无线电遥控车又比遥控车贵，因此可推知无线电遥控车是最贵的。
遥控车比机械车贵，无线电遥控车又比遥控车贵，因此可推知无线电遥控车是最贵的。
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