( 13分)西瓜膨大剂别名氯吡苯脲,是经过国家批准的植物生长调节剂,实践证明长期

题型:填空题

问题:

( 13分)西瓜膨大剂别名氯吡苯脲,是经过国家批准的植物生长调节剂,实践证明长期使用对人体无害。已知其相关性质如下表所示:

  分子式结构简式外观熔点溶解性
C12H10ClN3O白色结晶粉末170~172°C易溶于水
(1)氯元素基态原子核外电子的未成对电子数为         

(2)氯吡苯脲的晶体类型为_______        ,所含第二周期元素第一电离能从大到小的顺序为________________。

(3)氯吡苯脲晶体中,氮原子的杂化轨道类型为______    _。

(4)氯吡苯脲晶体中,微粒间的作用力类型有________    _。

A.离子键B.金属键C.共价键D.配位键E.氢键

(5)氯吡苯脲熔点低,易溶于水的原因分别为_________________________________

________________________________________________________________________。

(6)查文献可知,可用2-氯-4-氨基吡啶与异氰酸苯酯反应,生成氯吡苯脲。

异氰酸苯酯                 2-氯-4-氨基吡啶               氯吡苯脲

反应过程中,每生成1mol氯吡苯脲,断裂_______个σ键、断裂_______个π键

考点:极性分子、非极性分子无机分子的立体结构
题型:填空题

阅读理解

     Their reunion was unlike any other.  Graduating from the Macon, Georgia,  class of 1959 gathered

together in 2009, even though many of them never had an opportunity to meet during their high school

days.

    Schools in the 1950's, like most other public locations, were segregated (隔离)in Georgia. Kids were

forced to attend different schools depending on the color of their skin, and those with white skin were

further separated by gender. Fifty years later these people who were not allowed to associate with each

other were finally able to connect.

    It all began with the personal journey of a man named Tom Johnson. He grew up in Macon and

enjoyed a very successful career which included serving as the publisher of the Los Angeles Times and

president of CNN. Tom's life changed drastically over the years, but he still felt the desire to reconnect

with his roots.

    In 2005 Johnson returned to Macon with his son, Wyatt. As the pair drove around town,  the father

recounted high school stories to his son. He talked about how students attended one of three schools:

BallardHudson, Lanier or Miller. Wyatt looked over at his father and said:"Dad  think about how many

friends you missed getting to know."

    Johnson thought about the people he never got the chance to meet. He decided to do something

about it.

    The first step was to find people who graduated from all three schools. Johnson wrote to each person

and proposed they all get together for a luncheon. He explained that even though they were kept apart

during their youth, they didn't have to be separated any more. His classmates received the message with

open hearts. A reunion date was set for October.

     More than 200 former Macon students traveled hundreds of miles to reunite with people who went

to high school with them. It was an unprecedented event, former students coming together to make up

for the time they had lost during the days of segregation.

1. White students in Georgia in the 1950's could ________.  

A. attend school of a single sex

B. attend school of mixed sexes

C. attend school with students of other skin colors

D. attend any school they like

2. When the classmates received the message from Tom, they ________. 

A. were all eager for the reunion

B. were doubtful about his real purpose

C. refused to listen to him

D. all began to miss him

3. We can learn from the passage that Tom Johnson ________.  

A. began to miss his old school friends after he retired

B. wanted to reconnect with his roots after the dramatic         changes in his life

C. wanted to reconnect with his roots in spite of his successful career

D. began to miss his old school friends after hearing his     son's words

4. The passage mainly tells us ________.  

A. the success story of Tom Johnson

B. the segregation in Georgia in the 1950's

C. an unusual reunion of old graduates

D. the old school system in Georgia

题型:填空题

价格定义是土地估价最重要的程序,完整的土地价格定义应包括()等内容。

A.估价期日、实际与设定开发程度、实际与设定用途、现状或规划利用条件、实际与设定使用年期、价格类型

B.估价日期、设定开发程度、设定用途、现状或规划利用条件、设定使用年限、价格类型

C.估价期日、实际开发程度、现状用途、现状容积率、剩余使用年限

D.估价期日、开发程度、用途、容积率、使用年限

题型:填空题

设备监测到FANFAIL告警时最不可能的原因是()。

A.子架上FAN插头未插好

B.子架上某个风扇模块故障

C.设备温度过高

D.风扇子架电源未打开

题型:填空题

近年来,为了树立经济法主体独特性,将经济法主体概括为()。

A.决策主体

B.消费者

C.经营者

D.经济管理者

E.实施主体

题型:填空题

下列植物中,其种子传播对风能、人和动物依赖性小的植物是()

A.苍耳

B.枫杨

C.喷瓜

D.西瓜

更多题库