当x=0,y=50时，语句z=x if x else y 执行后，z的值是：_______________

A. Do you crazy about pop music?
B. Are you crazy about pop music?
C. Are you crazy at pop music?

A. Join us at 4 p.m. on Mondays at Room 103.
B. join us at 4p.m. at Room 103 on Mondays.
C. Join us at Room 103 at 4 p.m. on Mondays .

A. Her speech was very inspiring.
B. Her speech was very inspired.
C. Her speech was very interesting.

A. Theworkersthereshowushowusethemodernmachines.
B. Theworkersthereshowustousethemodernmachines.
C. Theworkersthereshowushowtousethemodernmachines.