用你灵巧的小手填一填．平均每个文具盒装_1支铅笔．_2÷_3 =_4_刷题宝

题干

用你灵巧的小手填一填．

平均每个文具盒装____支铅笔．

____÷____ =____

上一题下一题 0.0难度选择题更新时间:2019-03-25 05:44:37

答案(点此获取答案解析）

2,6,3,2

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下列关于伴性遗传的叙述，不正确的是 ( )

同类题2

平衡是事物发展的一种状态。小到体操中人在平衡木上的行走、杂技中的骑车走钢丝、直升机在空中的悬停等，大到人类的生存、地球的运转、天体的运行等等，都是保持平衡的一种状态。世间的万事万物，之所以能不停地运动、发展、前进，一个重要原因就在于保持了平衡。要使“平衡”成为人们的“大智慧”，就要（）

同类题3

要证明某溶液中不含Fe³⁺而可能含有Fe²⁺。进行如下实验操作时最佳顺序为 ①加入适量氯水 ②加入足量KMnO₄溶液 ③加入少量KSCN溶液（）

同类题4

明矾石经处理后得到明矾KAl（SO₄） ₂•12H₂O．从明矾制备Al、K₂SO₄和H₂SO₄的工艺过程如图1所示：

焙烧明矾的化学方程式为：4KAl（SO₄） ₂•12H₂O+3S═2K₂SO₄+2Al₂O₃+9SO₂+48H₂O

请回答下列问题：

同类题5

I am Brad. I like scary movies and action movies. My favorite movie star is Jackie Chan. I think Jackie Chan is a great actor. He has a movie Who am I? It's a very successful action movie. It's exciting.

My name is Kelly. I am a girl. I like comedies and soap operas, but I don't like scary movies. I think they are scary. I think Beijing Opera is educational. On weekend, I often go to see it with my father. I can learn a lot about Chinese history.

I am Carlos. My favorite cartoon star is Mickey. I think Mickey Mouse is a great cartoon. I also like scary movies. I think they are very exciting.

I'm a girl. My name is Mary. On weekends, I often watch cartoons and talent shows on TV. I think they are wonderful and relaxing. I don't like sitcoms. They are boring.

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