单项选择题
When do people start to shake hands？（）
A、The First Industrial Revolution.B、The Middle Ages.C、The Renaissance.
单项选择题 What is the right description of family bond？（）
单项选择题 Regarding view of education，what is the proper summary on the difference between China and the West？（）
单项选择题 Which will help you to mingle in the crowd？（）
