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问题
单项选择题
下列说法错误的是()
A.路:学生前后重叠成一行叫路
B.列:学生左右并列成一排叫列
C.翼:队伍的两端叫翼
D.基准学生:每一排的排头称为基准学生
答案
参考答案:
D
选择题
The boys usually ______ sports after school. Look! They ______ tennis now.
A. play; are playing
B. are playing; play
C. play; play
D. are playing; are playing
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问答题 简答题
何为分析过程中的偶然误差?有何特点?
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