Thus, the letter "d" is perceived as a circle and a line.

因此，字母“d”被认为是一个圆加一条线。

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Please find more verbs in simple past form in the letter, and circle them.

让学生找出短文中出现的其他动词过去式。

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The letter "O" is shaped like a circle.

字母“O”的形状就像一个圆圈。

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The letter "O" is shaped like a circle.

字母“O”的形状就像一个圆圈。

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