question: positive:humility
choices.label: A B C D
choices.text: effort:low-key strong:weak mania:depression optimistic:reserved
explanation: both "positive" and "humility" express a positive meaning, and both "positive" and "humility" can reflect the attitude of being a person and doing things, and they are both positive words. "effort" and "low-key" both express positive meaning, and both "effort" and "low-key" can reflect the attitude of being a person and doing things, and they are both positive words. "strong" expresses a positive meaning and is a compliment, but "weak" has a derogatory meaning, and "strong" and "weak" reflect a person's physical state. both "mania" and "depression" are derogatory terms, and "mania" and "depression" reflect a person's psychological state. both "optimistic" and "reserved" express positive meaning, but "reserved" refers to expressing euphemistically and intriguingly, not expressing all the affection when speaking, and cannot reflect the attitude of being a person and doing things.