单项选择题
A．在这次检查后，得出的结论是这位老人对这起交通事故负责。 B．在这次调查后，人们觉得这起交通事故完全是这位老人的责任。 C．在这次检查后，人们觉得这起交通事故完全是这位老人的责任。 D．在这次调查后，得出的结论是这位老人对这起交通事故负责。
A．they can use the money to do business B．they will become rich C．it makes them well-known D．it is good for them to stay 'in the stock market
A．the fact that it is not the safest way to invest in the stock market B．buying and selling shares in the stock market C．the ways to invest in the stock market D．where one can buy or sell the shares