单项选择题
A．The stockholder can sell his stock to anywhere at anytime. B．There were no stock exchange in England in the 1700's. C．The price of stock is not stable. D．The stockbrokers do the transaction without charging for the stockholders.
A．when you are asleep B．when you recover from your work of the day C．in the next period of activity D．when you are quiet
A．brought about a rapid growth of industry and farming in the west B．attracted many visitors to the construction sites C．attracted labourers from Europe D．encouraged people to travel all over the country