小题1:C
小题2:A
小题3:D
小题4:B
小题1:推理判断题.答案在第一段：I used to carry a fresh suit to work with me so I could change if my clothes got wrinkled，即“我过去常常带一套干净整洁的西服去公司，如果我身上的西服弄皱了，我可以随时更换”，因此C选项“他希望让自己身穿的衣服看起来一如既往的整洁”正确.A选项“他经常身穿运动休闲服饰”和原问suit(西服)不符；B选项“他无法忍受干净整洁的外表”和原意相反；D选项“他不想在衣服上花费太多的钱”.
小题2:推理判断题.答案在第一段….I need to feel comfortable,即David Smith穿休闲服饰的原因是为了“舒适自在”，因此A选项正确.B选项“他支付不起昂贵的西服”和原文意思不符；C选项“他穿休闲服饰时看起来很帅气”未在文中提及；D选项“他已经不再为任何一家公司工作”和原文I’m working harder than ever.不符.
小题3:细节理解题.A选项“许多员工不喜欢保守的着装规定”和原文85 percent of employers said that they believe that casual dress improves employee morale.内容相符；B选项“舒适的着装能提高员工工作的效率”体现在原文中…people seem happier and more productive when they are wearing comfortable clothes；C选项“休闲的着装规则很受年轻人的欢迎”和原文A lot of young people don’t want to dress up for work相符；D选项“美国所有的雇主都支持休闲着装的原则”和原文85%不符，答案为D选项。
小题4:细节理解题.A“节省员工的开销”和原文casual dress code helps them save money.相符；B选项“让员工看起来更加有吸引力”未在文中提及；C选项“提升员工的动力”和原文…..improves employee…..morale.相符；D选项“让员工心情更舒畅”体现在原文people seem happier and more productive when they are wearing comfortable clothes.