单项选择题

选择正确的移出断面图( )。 A.
B.
C.
D.

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同音、同义但是不同形的汉字，称为______字。

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Speech Situation: Suppose you are a scientist in renewable energy and are going to present at a seminar to a group of high school students from all of the world. You are expected to talk about what China has done in relation to achieving carbon neutrality. Due to time limitation, your talk can focus only on one type of clean energies.

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