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．Some rich people go to stock market. B．All the people who want to get more money go to stock market. C．Some people who are not rich go to stock market. D．Some people who want to save money go to stock market.
A．technology has widened the gap between the rich and the poor B．individual interest in computers might be a significant reason C．the survey has covered more than enough investigation samples D．the estimation by the Census Bureau is subject to correction