设P(B)>0,A1,A2互不相容,则下列各式中不一定正确的是() ( A ) P ( A1A 2/B ) = 0 ; ( B ) P ( AUA 2 B ) = P (a/B ) + P ( A 2 B ) : ( C ) P ( AA 2 B ) = 1 : ( D ) P ( A , UA 2 B ) = 1 .
参考答案:
The police asked the driver to ___________the car
The police asked the driver to ___________the car to have an alcohol test.选择一项:A