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问题 单项选择题

Z轴方向尺寸相对较小的零件加工，最适合用（）加工。

A、立式加工中心

B、卧式加工中心

C、卧式铣床

D、车削加工中心

答案

参考答案：A

单项选择题

《黄帝内经》提出的“天人合一”、“形神合一”的心理学观点属于医学心理学发展的哪一阶段（）。

A.科学医学心理学时代

B.哲学医学心理学时代

C.神灵医学心理学时代

D.现代医学心理学时代

E.以上都不是
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单项选择题

Passage Two


Five years ago, David Smith wore an expensive suit to work every day. "I was a clothes addict," he jokes. "I used to carry a fresh suit to work with me so I could change if my clothes got wrinkled. " Today David wears casual clothes—khaki pants and sports shirt—to the office. He hardly ever wears a necktie. "I’m working harder than ever," David says, "and I need to feel comfortable. "
More and more companies are allowing their office workers to wear casual clothes to work in the United States. The change from formal to casual office wear has been gradual. In the early 1990s, many companies allowed their employees to wear casual clothes on Friday (but only on Friday). This became known as "dress-down Friday" of "casual Friday". "What started out as an extra one-day-a-week benefit for employees has really become an everyday thing. " said business consultant Maisly Jones.
Why have so many companies started allowing their employees to wear casual clothes One reason is that it’s easier for a company to attract new employees if it has a casual dress code. "A lot of young people don’t want to dress up for work, "says the owner of a software company, "so it’s hard to hire people if you have a conservative dress code. "Another reason is that people seem happier more productive when they are wearing comfortable clothes. In a study conducted by Levi Strauss and & Co. , 85 percent of employers said that they believe that casual dress improves employee morale. Only 4 percent of employers said that casual dress has a negative impact on productivity. Supporters of casual office wear also argue that a casual dress code helps them save money. "Suits are expensive, if you have to wear one every day," one person said. "For the same amount of money, you can buy a lot more casual clothes. \

David Smith wears casual clothes now, because______.

A．they make him feel at ease when working

B．he cannot afford to buy expensive clothes

C．he looks handsome in casual clothes

D．he no longer works for any company
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