已知字符串s1='snow',s2='man',则表达式s1+s2的值为: A: 'mansnow' B: 'amnnosw' C: 'snowman' D: 7
已知字符串s1='snow',s2='man',则表达式s1+s2的值为: A: 'mansnow' B: 'amnnosw' C: 'snowman' D: 7
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已知字符串s1='snow',s2='man',则表达式s1+s2的值为: A: 'mansnow' B: 'amnnosw' C: 'snowman' D: 7