请写出一个在第二象限内且到两坐标轴的距离都相等的点的坐标（ ）。

苯甲酸甲酯是一种重要的工业用有机溶剂。请分析下列有机物的结构简式或性质特点，然后回答问题。

甲　　　　　　　　　　乙

丙的分子式	C7H8O
丙的部分性质	熔融状态下能与钠反应放出氢气
	与乙酸能发生酯化反应

(1)乙中含氧官能团的名称是________。

(2)甲、乙、丙三种有机物中与苯甲酸甲酯是同分异构体的是________，在加热条件下能够与新制氢氧化铜悬浊液反应生成红色沉淀的是________，与NaOH溶液在加热条件下反应消耗NaOH最多的是________。

(3)已知：苯在无水AlCl₃的作用下与卤代烃发生反应，可以在苯环上增加烷基。

①一定条件下，下列物质不能与A反应的是________(填字母序号)

a．酸性KMnO₄溶液      b．溴的CCl₄溶液       c．氢气       d．氯气

②丙生成甲的反应类型与________(选填序号)的反应类型相同。

a．反应Ⅰ  b．反应Ⅱ  c．反应Ⅲ 

③写出B生成丙的化学方程式：_________________________________。

肝内有三条韧带对超声检查很重要，它们是圆韧带、静脉韧带和镰状韧带。圆韧带是()①存在于左叶间裂②脐静脉的残留③在严重肝硬化时可见再通④在横切面上是一个回声增强光点⑤常见在门静脉之上

A．①②

B．①②③

C．①②③④

D．①③④⑤

E．①②③④⑤

子宫内膜癌放疗指征及方法?

阅读理解。

     When people advise your children to"get an education", they tell you only half the truth. What they

really mean is to get just enough education to give manpower for your society.

      Get a high school diploma, at least. Without that, you are occupationally dead, unless your name

happens to be George Washingon or Thomas Edison and you can successfully stop study in primary

school.

Get a college degree, if possible.With a BA, you should start to find a job. You have to put on the

brakes now. If you do go for a master's degree, make sure it is an MBA and only from a first-class

university. Otherwise, the famous law of diminishing (报酬递减率) begins to work.

Do you know, for example, that long-distance truck drivers make more money a year than full professors?  Yes, each driver was paid $28,000 in 1997 while a full professor managed to get $27,930.

     A PhD is the highest degree you can get, but except in a few specialized fields such as physics or

chemistry, where the degree can quickly be turned to industrial or commercial aim, you are facing a not

very bright future. There are more PhDs unemployed in this country than in any other part of the  world

by far.

     If you became a PhD in English or history or political sience or languages or-in philosophy, you take

the risk of becoming over-educated for our national demands.

     Thousands of PhDs ars selling shoes, driving taxis, waiting on tables and filling out applications month

after month, and then may be taking a job in some high school or college with the pay much less than a

door-keeper makes.

1. According to the writer, society expects education to turn out people who will       .     

A. raise their payment                    

B. get employed 

C. become specialized in some field        

D. meet the demands as a source of manpower

2. Long-distance truck driver make more money a year than full professors because     .      

A. the famous law of diminishing functions 

B. long-distance truck drivers only get a high school diploma

C. full professors are PhDs in English or history 

D. long-distance truck drivers work harder than full professors

3.The underlined phrase "put on the brakes" in the 3rd paragraph means "     ".     

A. stop learning for a higher degree

B. take up a master's degree at once

C. go on studying in a first-class university

D. find an interesting job

4.What can we know from the passage?      

A. The higher education you get, the more money you will earn.

B. Neither George Washington nor Edison received formal education.

C. There are more PhDs than the society demands.

D. If you are specialized in physics, you can't get a good job easily.

廷杖制度设立于：( )。

A．隋朝

B．唐朝

C．元朝

D．明朝