身边的经济学·社会常识英语30篇（4）
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Why Some Jobs Pay More
为什么有些工作薪水更高？
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Doctors earn more than cashiers—not because one is better.
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It takes years of study, practice, and exams to become a doctor.
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Some jobs need rare skills, long training, or night shifts.
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Others need strength, travel, or working in noisy places.
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Pay often matches effort, risk, and time spent learning.
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Jobs with high demand and low supply usually pay more.
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Fair pay means matching value—not just hours worked.
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All work matters. Pay shows what society values *right now*.