下列常用的喹诺酮类抗菌药物中哪种药品影响未成年人长高而严禁使用?() A.吡哌酸(比

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问题:

下列常用的喹诺酮类抗菌药物中哪种药品影响未成年人长高而严禁使用?()

A.吡哌酸(比扑酸)

B.氟哌酸(诺氟沙星)

C.环丙氟哌酸(环丙沙星)

D.氟泰酸(泰利必妥,氧氟沙星)

E.左氧氟沙星(瑞科沙)

考点:体育保健学体育保健学题库
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济南市“两会”召开前,某政协委员针对自己提出的“环保提案”对某处的环境状况进行了实地调研。据测定,该处的污染指数与附近污染源的强度成正比,与到污染源的距离成反比,比例常数为k(k>0)。现已知相距36km的A,B两家化工厂(污染源)的污染强度分别为正数a,b,它们连线上任意一点C处的污染指数y等于两化工厂对该处的污染指数之和。设AC=x(km),

(Ⅰ)试将y表示为x的函数;

(Ⅱ)若a=1时,y在x=6处取得最小值,试求b的值。

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甲、乙、丙、丁四种短周期元素可以组成下列框图中除Br2和L以外的物质,其原子序数依次增大。甲和乙可形成常见液态化合物K,固体A中含有丙元素的正一价阳离子,其电子层结构与氖原子相同,丁元素原子的最外层电子数是其电子层数的2倍。在一定条件下,下列各物质可发生如图所示的变化(反应中生成的水没有写出):

试回答:

(1)甲元素的名称为__________,溴元素在周期表的位置____________丁元素的阴离子结构示意图为____________。

(2)A的电子式为________;所含化学键类型为____________。

(3)乙、丙、丁三元素的离子半径由大到小的顺序为__________(用元素符号表示) 。

(4)反应(I)的化学方程式为________________。

(5)反应(II)的离子方程式为________________。

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公务员非因法定事由和法定程序,不得被免职。()

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阅读下面的短文,然后按照要求写一篇150词左右的英语短文。

A long time ago, there was a huge apple tree. A little boy loved to come and lay around it every day. They loved to play together.

As time went by, the boy had grown up and no longer played around it. One day, he came back and the tree excitedly invited him to play. But the boy said he needed money to buy toys. “Sorry, but I have no money, but you can pick all my apples and sell them,” said the tree. The boy did as told and left happily but never came back .The tree was sad.

Many years passed, the boy returned and told him he had to make money to build a house for his family. The tree happily offered his branches for his house. With the branches, he boy left satisfied. The tree was again lonely and sad.

Then one hot summer day, the tree was delighted to see the boy back again. “Come and play with me!” the tree said. “I am sad and getting old. I want to go sailing to relax myself. Can you give me a boat?” “Use my trunk to build your boat.”  The boy cut the tree trunk and went sailing but never showed up for a long time. The tree was happy, but it was not true.

Finally, the boy returned after he left for so many years. “Sorry, my boy. But I don’t have anything for you anymore. No more apples for you.” the tree said with tears.

The boy replied that he was too old and needed nothing “Good! Old tree root is the best place to lean on and rest. Come, Come sit down with me and rest.” The boy sat down and the tree was glad and smiled with tears...

[写作内容]

1.以约30个词概括上述寓言故事的要点;

2.以约120个词,写出以下内容:

(1)故事的寓意及读后感;

(2)假如你是故事中的那个男孩,你会怎样做?

[写作要求]

1.可以使用实例来支持你的论点,也可以参照阅读材料的内容论述,但不得直接引用原文中的句子;

2.作文中不能出现真实姓名和学校名称。

[评分标准]

概括准确,语言规范,内容合适,篇章连贯。

(来源于中山市2009届5月高考调研试卷)

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