中点选民（median voter)

A.Sobel

B.平均化

C.Median

A.won

B.must win

C.win

D.will win

A.=（A1+A2+A3）/3

B.=Average（A1:A3）

C.=Median（A1:A3）

D.=Sum（A1:A3）

A.=Average(A1:A3)

B.=Median(A1:A3)

C.=Sum(A1:A3)

D.=(A1+A2+A3)/3

Internet voting is growing rapidly because of all of the following EXCEPT that ______.

A．civic engagement enthusiasts regard it as a way to prevent the drop in voter turnout

B．Internet fans think the Internet is going to change everything including politics

C．some people make the plan for developing software for online voting

D．some capitalists are very much concerned about the voter turnout

A．the lack of interest in politics

B．the inconvenience of voting

C．the lack of regulations

D．the limited voting hours

半数中毒量(median toxic dose)

A．the inconvenience of voting

B．the commercialization of the voting procedures

C．the lack of interest and enthusiasm in politics

D．the insecurity of voting on line due to the constant breakdown of computer systems

半数致死剂量(median lethal dose，ID₅₀)