question: inch:foot
choices.label: A B C D
choices.text: wind:rain frost:frozen big:small electricity:magnetism
explanation: "inch", "foot" are all units of length, and both "inch" and "foot" can be compared in size "wind" and "rain" are both natural phenomena, but "wind" and "rain" cannot be compared in size. the necessary condition for the formation of "frost" is "frozen", and "frost" and "frozen" cannot be compared in size "big" and "small" can measure objects, and both "big" and "small" can be compared in size. both "electricity" and "magnetism" are a kind of physical phenomena, but "electricity" and "magnetism" cannot be compared in size.