| 在 □ <span style="font-family: 宋体; font-size: 10.5pt; mso-bidi-font-size: 12.0pt; mso-ascii-font-family: " times="" new="" roman";="" mso-hansi-font-family:="" "times="" mso-bidi-font-family:="" mso-font-kerning:="" 1.0pt;="" mso-ansi-language:="" en-us;="" mso-fareast-language:="" zh-cn;="" mso-bidi-language:="" ar-sa"="">里填上适当的数字。 | ||
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a.15[ ]
a.一定是两位数[ ]
a.400÷(75÷3)