The sign x ____ an unknown number. [ ]A. stands for B. stands out C. stands upD. stands against -高一英

题目简介

The sign x ____ an unknown number. [ ]A. stands for B. stands out C. stands upD. stands against -高一英

题目详情

The sign x ____ an unknown number.
[     ]
A. stands for
B. stands out
C. stands up
D. stands against
题型:单选题难度:中档来源:0103 月考题

答案

A

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