阅读理解 No matter how employees feel about work their primary motivation to work is to earn a living. People's attitudes towards their jobs are related to the nature of their work and the rewards they receive. For the factory worker, work is a necessary evil which merely ensures survival. The corporation president sees work as a way of obtaining material goods far beyond what is necessary for survival. The teacher and the librarian, although not highly paid, find intellectual stimulation and personal gratiticauon(满意) in their jobs.
There are some people, however, who do succeed in raising their economic and social levels. "'Upward (occupational) mobility'" to "climbing the ladder" are terms that refer to one's advancement in work. Many employees have a succession of jobs that constitute a career. Some businesses, organizations, government agencies, and firms provide employees with opportunities to progress to higher positions. Promotions and increased responsibility generally bring higher salaries.
Rewards for achievement in work are personal as well as financial. There is increased job satisfaction when employees have the opportunity to develop creative and intellectual skills. Gaining recognition from fellow workers, supervisors(监工) and managers gives one a sense of importance and identity in society.

单选题 How do people usually feel about their motivation to work?

单选题 It can be inferred from the passage that people have_____attitudes towards their jobs.

单选题 What does "climbing the ladder" in the second paragraph in the passage mean? It means that someone_____.

单选题 Many employers encourage their employees to work hard by_____.

单选题 The employee will feel proud of himself if_____.