材料
As a general rule, all forms of activities lead to boredom when they are performed on a routine basis. As a matter(1)fact, we can see this( 2)at work in people of all ages. For example, on Christmas morning,children are excited about playing with their new toys. But their( 3 )soon wears off. And by January those same toys can( 4)put away in the basement. The world is full of half-filled stamp albums and unfinished models, each standing as a monument to someone's( 5)interest. When parents bring home a pet, their child( 6)bathes it and brushes its fur. Within a short time, however, the( 7)of caring for the pet is handed over to the parents.Adolescents enter high school with great( 8).But they soon look forward to (9). The same is true of the young adults going to college. And then, how many adults, who now complain about the long drives to work,(10 )drove for hours at a time when they first (11) their driver's licenses? Before people retire, they usually(12)to do a lot of great things, (13 )they never had time to do while working. But soon after retirement,golfing, fishing,reading and all of the other pastimes become as boring as the jobs they (14) ,And, like the child in January, they go searching for new (15).
第11题选（）
A. required
B. obtained
C. noticed
D. discovered
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