46. What do we know about John?

　　A. He enjoyed his career and marriage.

　　B. He had few childhood playmates.

　　C. He received little love from his family.

　　D. He was envied by others in his childhood.

　　47. Vaillant’s words in Paragraph 2 serve as _____.

　　A. a description of personal values and social values

　　B. an analysis of how work was related to competence

　　C. an example for parents’ expectations of their children

　　D. an explanation why some boys grew into happy men

　　48. Vaillant’s team obtained their findings by _____.

　　A. recording the boys’ effort in school

　　B. evaluating the men’s mental health

　　C. comparing different sets of scores

　　D. measuring the men’s problem solving ability

　　49. What does the underlined word “sharp” probably mean in Paragraph 4?

　　A. Quick to react

　　B. Having a thin edge

　　C. Clear and definite

　　D. sudden and rapid

　　50. What can be inferred from the last paragraph?

　　A. competent adults know more about love than work.

　　B. Emotional health is essential to a wonderful adult life.

　　C. Love brings more joy to people than work does.

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