如下： str1 = "Runoob example....wow!!!" str2 = "exam"; print(str1.find(str2, 5)) 打印的结果是（）
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哪个选项是下面代码的执行结果？ name="Python语言程序设计课程" print(name[0],name[2:-2],name[-1])
A. P thon语言程序设计 程
B. P thon语言程序设计 课
C. P thon语言程序设计课 程
D. P thon语言程序设计课 课
第七段：who decide whether we are good enough?
A. our friends
B. ourselves
C. our loved ones
D. our parents
第一段：what are Americans striving for?
A. to be better than we are
B. to be bigger than we are
C. to try to keep up with others
D. do nothing
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