单选题 Most people are much less ______ of the extent to which work provides the psychological well-being.
【正确答案】 A
【答案解析】[解析] 本题考查形容词和介词of的固定搭配。be conscious of...意为“意识到…”；be free of...意为“免除…”；be proud of...意为“以…为豪”；be afraid of意为“害怕…”。根据句意，故选A。