题目内容
在函数内部可以通过关键字（ ）来定义全局变量。
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（ ）语句只要执行，就会直接结束函数的执行
函数定义：def fun_bmi(person,height,weight=65):bmi=weight/(height*height)print(bmi)在调用该函数时，以下哪句代码存在语法错误？
n. something that is done in advance in order to prevent problems or to avoid danger
n. an amount of money paid regularly by a government or company to sb. who is considered to be too old or too ill/sick to work
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