题目内容

翻译题:The English ceremony of afternoon tea dates back to the 1840s. The tradition evolved out of the rituals and routines that surrounded tea drinking in Britain before that time. Tea was first introduced to England in the late 1650s, but for a long time, it was only consumed by the royal family and the aristocracy due to its high cost. The habit of having afternoon tea did not become established until almost 200 years later. In those days, the British ate only two daily meals: a large breakfast late in the morning and a late dinner around 8 o'clock in the evening. Anna, the 7th Duchess of Bedford, can be credited for creating the tradition of afternoon tea to soothe hunger pangs before supper. She invited friends to join her for an additional afternoon meal at four to five o'clock. The menu included tea and snacks such as dainty cakes and sandwiches. Fine porcelain (瓷器) was used to serve this minor feast. Afternoon tea soon became popular, and is now a symbol of the elegant British way of life. As novelist Henry James wrote, "There are few hours in life more agreeable than the hour dedicated to the ceremony known as afternoon tea."

查看答案
更多问题

已知电对(Cl2/Cl-)的标准电极电势为+1.36V,在下列电极反应中标准电极电势为+1.36V 的电极反应是( )

A. Cl2 + 2e- = 2Cl-
B. 2Cl2 + 4e- = 4Cl-
C. 1/2Cl2 + e- = Cl-
D. 都是

盐桥中的饱和氯化钾,在铜锌原电池中( )。

A. K+向CuSO4溶液扩散
B. K+向ZnSO4溶液扩散
Cl-向CuSO4溶液扩散
D. Cl-任意扩散

下列氧化剂随H+ 浓度的增大其氧化性增强的是( )

A. K2Cr2O7
B. FeCl3
C. K2[PtCl4]
D. Cl2

铜锌原电池正极上发生的变化是( )。

A. Zn2+迁移离开正极
B. Cu2+迁移离开正极
Cu2+沉积于正极
D. Zn2+沉积于正极

答案查题题库