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问题
填空题
在Excel中，单元格区域B2:C4包含______个单元格。
答案
参考答案：
F
选择题
— Have you _____ Lihua to give up playing computer games?
— No, I have talked with him many times, but it didn't work.
A. advised
B. suggested
C. persuaded
D. allowed
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选择题
细菌与洋葱表皮细胞相同的地方在于它们都具有 [ ]
A．叶绿体
B．细胞核
C．荚膜
D．细胞膜
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