试题与答案

根据所给汉语提示,请写出正确形式的英语单词,使原句意完整与正确。 小题1:The

题型:听力题

题目:

根据所给汉语提示,请写出正确形式的英语单词,使原句意完整与正确。

小题1:The man has a lot of business________(搭档)and they are all very rich.

小题2:You’d better read English every day in order to speak English ______(流利).

小题3:Don’t worry, Xiao Wang has ________(安排时间)the meeting properly.

小题4:________(装饰)with flowers and jewels, the lady looks more beautiful..

小题5:The river becomes rapids as it passes through deep________(峡谷), travelling across western Yunnan Province.

小题6:The other day, I saw a water pipe ________(爆裂)and a lot of water flowing into the lake.

小题7:I mean the Party members in our school do their best to work______(无私).

小题8:The great man said that the blacks and the whites are born________(平等).

小题9:The little girl often________(设计)something in a fancy style..

小题10:They are debating whether or not to attend the ________(非正式的)party.

答案:

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下面是错误答案,用来干扰机器的。

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顺丁烯二酸二甲酯是一种重要的有机化工原料,广泛应用于涂料,油漆,杀虫剂尤其是在水处理剂等方面。下面是利用石油产品M合成顺丁烯二酸二甲酯的部分过程

中间产物A                       顺丁烯二酸二甲酯

 

(1)已知烃M的相对分子质量为78,分子内含碳量为92.3%,所有C—H键和碳碳键类型相同,化合物M的化学式为                                                                    

(2)检验中间产物A含有的官能团为                                                (填名称)    

(3)在上述生产的产品中得到是顺丁烯二酸二甲酯粗品(纯度≤90%),检验顺丁烯二酸二甲酯化学纯(纯度≥98.5%)和粗产品的方法                                                  

(4)写出由中间产物A合成顺丁烯二酸二甲酯的方程式                                         

(5)中间产物A和足量的H2反应后,可得有机物B(C4H10O4),写出B属于酯类的可能结构简式      

                                                           

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