单项选择题
若要在公式中输入文本型数据"This is",应输入()。
A. "This is"
B. " "This is "
C. " "This is" "
D. " ’This is "
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单项选择题
A. "This is"
B. " "This is "
C. " "This is" "
D. " ’This is "
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