某种鲜花进货价为每枝5 元,若按标价的八折出售仍可获利3 元,问标价为每枝多少元

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问题:

某种鲜花进货价为每枝5 元,若按标价的八折出售仍可获利3 元,问标价为每枝多少元,若设标价为每枝x元,则可列方程为__________ ,解之得x=__________ .

考点:一元一次方程的应用
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图所示的四个电路中,闭合开关S,三盏灯属于并联的是

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用所给词的适当形式填空

1. Grace studies in Beijing _______ (internation)school.

2. There are many _______ (build) in this old city.

3. Our classroom is on the ______ (two) floor.

4. They want              ______ (play) games with us.

5. Students always practice ______ (dance) in the dancing room.

6. There ______ (be) some tea in the big box.

7. My friends are from different _______ (country) but we are friendly each other.

8. Are there ______ (some) trees in front of the classroom?

9. That tall building is ______ (we) teaching building.

10. —May I borrow your color pen?

      —Sorry, I don’t have one, Lucy may have one,You can ask ______ (she).

题型:填空题

小明和小华分别购买了两稀橡胶球,小明说:“我的弹性比你的好”。小华说:“我希望你能证实你的说法”。小明可选择下列哪个设计方案来解决这个问题 [ ]

A.两球向墙扔去,比较它们反弹时离墙的距离

B.手触摸两球,看哪一个球较硬

C.两球于离地等高处由静止下落,比较它们反弹的高度

D.把两球向地面掷下,比较它们反弹的高度

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群体的极化现象有()种解释

A.一

B.二

C.三

D.四

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预热对防止再热裂纹有一定效果,一般因钢的组成不同,预热温度范围在200~450℃。

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