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【单选题】
Because our work is very busy, so we need to relax at midday.A.
We are very busy
B.
Our work being busy
C.
Our work so very busy
D.
Because our work so very busy,
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【简答题】Since the spring had arrived, the yard became ___________ with flowers of different kinds.
【简答题】colorful helpful hopeful painful cheerful Since the spring had arrived, the yard became ___________ with flowers of different kinds.
【简答题】具有磷脂双分子层薄膜结构,对进出细胞的物质具选择性的结构是( ); 位于细胞中央,控制细胞的遗传、生长和发育的球形结构( ); 能够通过光合作用将水、二氧化碳合成葡萄糖等有机物的细胞器是( )
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