单选题：第49题_________

题目分类：卫生类
题目类型：单选题
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题目内容：

第49题_________ A．He advises us to lose our inhibitions (抑制) and try to laugh at ourselves.
B．Is it possible to develop a sense of humor?
C．However, that does not mean that infants have a sense of humor.
D．What is true, however, is that we are born with the capacity to laugh and smile.
E．Everyone experiences this emotion.
F．He had a serious purpose, but if you have a sense of humor, you will probably find the sign funny!

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分类：卫生类题型：单选题