国家行政机关公文：是行政机关在行政管理过程中所形成的具有法定效力和规范体式的公务文书

根据物质组成种类的多少可以把物质分为纯净物和混合物；而根据纯净物中组成元素的多少又可以分成单质和化合物。现有以下物质：

（1）氢气（H₂）；（2）牛奶；（3）澄清的石灰水；（4）氧化铝（Al₂O₃）；

（5）水（H₂O）；（6）四氧化三铁（Fe₃O₄）；（7）白磷（P）；（8）高锰酸钾（KMnO₄）；（9）二氧化硫（SO₂）；（10）氯化钠（NaCl）；（11）过氧化氢（H₂O₂）。

其中：属于混合物的有___________（填序号，下同）；属于化合物的有_______________，属于单质的是_______________，属于氧化物的是________________。

古代中国中原人口曾大量南迁,其最主要的原因是 [ ]

A．自然灾害      

B．政府徭役        

C．战争动乱          

D．经营不善

以下不属于门诊教育内容的是（）

A.候诊教育

B.出院教育

C.随诊教育

D.咨询教育

E.健康教育处方

语法填空

阅读下面短文,按照句子结构的语法性和上下文连贯的要求,在空格处填入一个适当的词或使用括号中词语的正确形式填空.

     In every school a "top" crowd sets the pace,while the others follow their lead.Let's say the top crowd

decides that it is smart to wear bright red sweaters.Pretty soon everybody is wearing __1__bright red

sweater.There is nothing wrong with that,__2__the fact that on some people a bright red sweater is

__3__(extreme)unbecoming.The situation can even become dangerous,if the top crowd decides that it is

smart to drink or to drive cars at seventy miles an hour.Then the people __4__(follow) the lead are

endangering their lives.They are like the sheep being led to the butcher.Now,chances are __5__you have

come across situations like these more than once in your life；chances are that one time or __6__you

probably did something you knew to be wrong.You may __7__(excuse)yourself by saying,"Gee,the

crowd does it."Well,let the crowd do it,__8__don't do it yourself.Learn to say,"No."

     Develop your own standards and your own judgment.__9__you know the crowd is planning

something you __10__(agree)with,have the courage to bow out politely.You'll have the satisfaction of

standing on your own two feet.

一号线BAS系统空调大系统设置模式有：0—停运，1—只排不送，2—只送不排，3—（），4—最小新风。