问答题

头年开展三下乡，收获巨大（数学词）

答案：谜底：矩形

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单项选择题

What did Gertrude Lang do after her graduation?
A、She worked as a teacher.
B、She worked as a governor.
C、She was one of the brand members.
D、She worked as an officer lady.

化学试剂A.R.是分析纯，为二级品，其包装瓶签为红色

答案：正确