Happinessislikeapebble(...

Happiness is like a pebble(鹅卵石)____ into a pool to bring ____ ever-widening circle of ripples（波纹）. As Stevenson has said, being happy is a duty.
There ____ no exact definition of the word happiness. Happy people are happy ____ all sorts of reasons. The key is not wealth or physical health, since we find beggars, invalids(伤残者) and so-called failures, ___ are extremely happy.
Being happy is a sort of unexpected dividend收益. But ____ happy is a total triumph(胜利) of soul and character. It is not selfish to work hard for it. It is, indeed, a duty to ourselves and others.
Being __ is like an infectious illness.__ causes people to shrink away from the sufferer. He soon ____ himself alone, sad and frustrated. There is, however, a cure so simple; if you don’t feel happy, pretend to be!
It works. __you will find that instead of driving people away, you attract them. You discover how deeply rewarding（有益的）it is to be the ____ of wider and wider circles of good will.
Then the make-believe bees a ___. You own the peace of mind, and can forget yourself in being of service to ____.
Being happy, once(一旦) it is realized as a duty and started as a ____, opens doors into unimaginable gardens crowded___ grateful friends.

【小题1】
A．dropB．droppingC．to dropD．dropped


【小题2】
A．aB．anC．theD．/


【小题3】
A．beB．areC．isD．was


【小题4】
A．becauseB．forC．asD．since


【小题5】
A．whichB．whoC．thatD．whom


【小题6】
A．lookB．stayingC．to feelD．being


【小题7】
A．happyB．braveC．confidentD．unhappy


【小题8】
A．ItB．WhichC．ThatD．What


【小题9】
A．enjoysB．makesC．findsD．lets


【小题10】
A．Long beforeB．after longC．Before longD．Long ago


【小题11】
A．centerB．topC．middleD．end


【小题12】
A．realB．realityC．reallyD．realize


【小题13】
A．anotherB．othersC．elseD．other


【小题14】
A．surpriseB．pleasureC．hobbyD．habit


【小题15】
A．inB．toC．withD．of