题目内容：

As a general rule, all forms of activity lead to boredom when they are performed on a routine(常规)basis. As a matter of fact, we can see this      at work in people of all        . For example, on Christmas morning, children are excited about          with their new toys. But their   soon wears off and by January those      toys can be found put away in the basement. The world is full of        stamp albums and unfinished models, each standing as a monument to someone’s     interest. When parents bring home a pet, their child    bathes it and brushes its fur. Within a short time, however, the      of caring for the animal is handed over to the parents. Adolescents enter high school with great    but are soon looking forward to      . The same is true of the young adults going to college. And then, how many      , who  now complain (抱怨) about the long drives to work,      drove for hours at a time when they first       their driver’s license (执照)? Before people retire, they usually     to do a lot of      things, which they never had      to do while working. But     after retirement , the golfing, the fishing, the reading and all of the other pastimes become as boring as the jobs they    . And , like the child in January, they go searching for new     .

1.A.weaker       B. habit      C.  principle        D. power

2.A. ages        B. races      C. countries         D. parties

3.A. working      B.playing     C. living           D. going

4.A. confidence    B.sorrow    C. anxiety           D. interest

5.A. same        B. extra       C. funny           D. expensive

6.A. well-organized  B.half-filled   C. newly-collected   D.colorfully-printed

7.A. broad         B.different    C.  passing        D. main

8.A. silently        B. impatiently  C.worriedly        D. gladly

9.A. promise        B. burden    C. right           D. game

10.A. excitement     B. calmness    C. confusion      D.courage

11.A. graduation    B. independence  C. responsibility  D. success

12.A. children      B. students     C. adults          D. retirees

13.A. carefully     B. bravely    C. nervously      D. eagerly

14.A. required      B. obtained    C. noticed         D. discovered

15.A. need          B. learn       C. plan           D. start

16.A. great          B. strong       C. difficult        D. correct

17.A.knowledge      B. money      C. skills           D. time

18.A. only           B. well        C.soon            D. even

19.A. lost            B. chose       C.quit           D. left

20.A. pets            B. toys       C. friends         D. Colleagues