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.
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正确答案
试题解析
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。
