人文区位学理论不包括 A．社区的类型学理论 B．同心圆理论 C．扇形理论 D．

有机分子中碳原子连四个不同的原子或原子团时，称为不对称碳原子（或手性碳原子），以*C表示，具有手性碳原子的有机物具有光学活性．如：

（1）标出下列有机物X

 中的手性碳原子：______

（2）下列分子中，没有光学活性的是______，含有两个手性碳原子的是______．

A．乳酸　CH₃-CHOH-COOH

B．甘油　CH₂OH-CHOH-CH₂OH

C．脱氧核糖　CH₂OH-CHOH-CHOH-CH₂-CHO

（3）若使有机物X通过化学变化，使生成物中不再具有手性碳原子从而失去光学活性，可能发

生的反应类型有______．有机物Y的结构简式为，

若使Y通过化学变化失去光学活性，可能发生的反应类型有______．A．酯化  B．水解 C．氧化  D．还原 E．消去．

阅读理解。

     In one way of thinking, failure is a part of life. In another way, failure may be a way towards success.

Unit 5  Great People

     The "spider story" is told. Robert Bruce ,leader of the Scots in the 13th century ,was hiding in a cave

from the English. He watched a spider spinning a web .The spider tried to reach across a rough place

on the rock.lt tried six times without success. For the seventh time it made it and went on to spin its web.

It is said that Bruce was taken heart and went on defeating the English later.

     Edison, the inventor of the light bulb, made hundreds of models that failed before he found the right

way to make one.

     So what? First, always think about your failure. What caused it? Were conditions right? Were you

in top form yourself? How can you make such things go right next time?

     Second, is the goal you are trying to reach the right one? Try to do some thinking about what your

real goal may be. Think about this question ,"lf I do succeed in this ,where will it get me?"This may

prevent you from doing things you shouldn't do.

      The third thing to bear in mind about failure is that it's a part of life. Learn to "live with yourself"

even though you may fail. Remember, "You can't win them all. "

1. The first two sentences tell us _____.

A. failure is not all bad

B. failure is terrible

C. only failure can lead you to success

D. to think of success all the time

2. One thing the writer does not tell us to deal with failure is _____. 

A. checking out the goals to see if they are right for us

B. regarding failure as a part of life

C. thinking the success all the time

D. thinking about the failure to find out what went wrong

3. The "spider story" is mentioned in the passage to show that _____.

A. failure must come from success

B. nature will help us if we let it

C. failure is the mother of success

D. people who fail have the same experience

4. Which one of the following is TRUE? 

A. Edison didn't fail before he invented the light bulb.

B. Edison was the inventor of the light bulb.

C. The spider didn't tell Robert Bruce any lesson.

D. There is no failure in a successful person's life.

5. The main idea of the passage is _____.  

A. what failure is

B. Edison and Bruce failed repeatedly before success

C. how to deal with failure

D. both A and C

注册房地产估价师未按规定办理变更注册仍执业的，应限期改正，逾期不改正的，可处以（）元以下的罚款。

A.1000

B.5000

C.10000

D.30000

下列包装标志中，要在货运单据上表示的是（）。

A.运输标志

B.指示性标志

C.警告性标志

D.条形码标志

下列子过程的功能是：将当前数据库文件中“学生表”的学生“年龄”都加1。请在程序空白处填写适当的语句，使程序实现所需的功能。
Private Sub SetAgePius1_Click()
Dim db AS DAO.Database
Dim rs AS DAO.Recordset
Dim fd AS DAO.Field
Set db=CurrentDb()
Set rs=-db.OpenRecordset("学生表")
Set fd=rs.Fields("年龄")
Do while Not rs.EOF
rs.Edit
fd=______
rs.Update
______
Loop
rs.Close
db.Close
Set rs=Nothing
Set dh=Nothing
End Sub