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已知有如下语句: s='hello, world' r=Mid(s,7,5) 运行上面的语句后,变量r的值为 ( )
D.orld
A.hello
B.wotld
C.llo,w
【参考答案】
B
解析:Mid(s,7,5)表示从字符串 s中的第7位开始向右取出5个字符。题中s为'hello,world',故执行语句r=Mid(s,7,5)后,变量r的值应为'world'。
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