Why are we more likely to tell more of our friends about unsatisfied experiences with a business than satisfied ones（）
A. Because we aren"t inclined to have a negative feeling.
Because we often feel negative emotions more intensely.
C. Because we seem to feel more intensely.
D. Because we often hear people express their negative emotions.
According to the author, whether we"ll go to a place or not depends on （）
A. media advertising
B. department store display window
C. word-of-mouth advertising
D. the business fame
The passage mainly discusses （）
A. a new way of highway speed control
B. a new pattern for painting highways
C. a new way of training drivers
D. a new type of optical illusion
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