1 . 听下面一段较长对话，回答以下小题。
1. What prevented Adam from completing the race probably?

A．Lack of training.

B．The hot weather.

C．His disease.

2. When will the men's 50-kilometer race walk final in Tokyo begin?

A．At 5：30 am.

B．At 6：00 am.

C．At 6：30am.