工业上用甲苯生产对-羟基苯甲酸乙酯:,下列反应①—⑥是其合成过程,其中某些反应条

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问题:

工业上用甲苯生产对-羟基苯甲酸乙酯:,下列反应①—⑥是其合成过程,其中某些反应条件及部分反应物或生成物未注明)。

回答下列问题:

(1)有机物A的结构简式为___________________。

(2)反应②的化学方程式是:____________________________________。

(3)试剂x是___________,反应⑥的反应类型是_____________反应。

(4)反应⑤的化学方程式是:_____________________________________。

(5)合成路线中设计③、⑤两步反应的目的是______________________。

考点:有机物的合成
题型:填空题

对开发完成后的房地产价值、开发成本等的测算,在传统方法中主要是根据估价时的房地产市场状况做出的,即它们基本上是静止在估价作业期时的数额;而在现金流量折现法中,是模拟开发过程,预测它们在未来发生时所发生的数额。( )

题型:填空题

先阅读短文,然后根据要求答题。

   The Dragon Boat Festival (端午节) is the day to remember a Chinese national hero, Qu Yuan, who threw

himself into the river and died over 2,000 years ago. Old story has it that people, in order to save Qu Yuan,

beat drums to drive fish away, and threw rice dumplings (zong zi) into the river to keep the fish from eating

his body. 

    For thousands of years, people have spent the festival by eating zong zi and holding dragon boat races on

the fifth day of the fifth lunar(阴历的) month, especially in the provinces where there are many

rivers and lakes. 

    The dragon boat races that many people want to save Qu's body. Those races are the most exciting

part of the festival, with very large crowds of people watching them. The special boats, more than 10 meters

long, have colorful "dragon"heads and tails (尾巴), and boat carries a team of 20 or 22 players. Every

year dragon boat races take place in southeast Asian countries and some western countries, including America,

Canada, Australia and New Zealand.

一. 根据短文内容完成下列语音题:

1. Write out the word .

2. Write out the word .

3. Write out the word .

4. In the underlined sentence find two words that can be read together (连读).

5. In the underlined sentence find a word whose last sound can have incomplete plosion(失去爆破). 

二. 根据短文内容填入一个适当的词:

1. The Dragon Boat Festival is the day for people to keep Qu Yuan in their _____.

2. The Dragon Boat Festival has a history of more than two _____ years.

3. Since the Dragon Boat Festival falls on the fifth day of the fifth lunar month, can we call it "The Double _____

Festival"?

4. Dragon boat races are mostly held in South China because there are more _____ areas there.

5. Dragon boat races are becoming more and more _____ in the world.

题型:填空题

客户通过网上银行办理国债业务后,可在交易发生的()到网点打印交割单。

A、当日

B、次日起至三个月内

C、次日起至两个月内

D、次日起至半年内

题型:填空题

给予()的行政处罚,由县级以上人民政府安全生产监督管理部门或者煤矿安全监察机构建议公安机关依照治安管理处罚条例的规定决定。

A、关闭 

B、拘留 

C、吊扣证照 

D、罚款 

题型:填空题

糖尿病患者出现四肢无汗伴随皮肤干燥提示存在

A.脊髓丘脑束损害
B.脊髓锥体束损害
C.周围神经的感觉神经损害
D.周围神经的运动神经损害
E.周围神经的自主神经损害

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