I have experienced 10 college entrance examination, so listen to me. The choice of questions depends on which one you draw. Which pile will the card reader put you in? If you draw an A, you will be assigned to the pile of A cards. If you draw a B card, you will be sent to the B card pile. But if you don't draw a B card, the machine will default that you chose the first question. This teacher specifically said once that I didn't draw my own math for the college entrance examination.