《阳光灿烂的日子》中，马小军长大成人的标志是（）。
A. 成为小群体的领导
B. 被小群体丢弃，友情割断
C. 单相思的爱情失败
D. 以上都对
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In ancient Rome, people used decorative wreaths as ______.
A. a sign of victory and celebration
B. a sign of having people at home
C. a sing of a workplace
D. a sign used in the church
What things are used in Christmas decorations?
A. Holly.
B. Mistletoe.
C. The Christmas wreath.
D. All of the above.
生态木是将____和____及高分子材料按一定比例混合,经高温、挤压、成型等工艺制成一定形状的型材,是一种"木塑合成材料"。
矿棉板常用正方形样式,规格尺寸为____mm, 厚度12mm或14mm。
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