Question 2 is based on the news report you have just heard.

News Report One

听力原文

       (1) A 9-year-old Central California boy braved strong currents and cold water to swim from San Francisco to Alcatraz Island and back. A California television station in Fresno reported Tuesday that James Savage set a record as the youngest swimmer to make the journey to the former prison.

       The TV station reported that by completing the swim, the fourth-grade student from Los Banos broke a record previously held by a 10-year-old boy. James said that waves in the San Francisco Bay hitting him in the face 30 minutes into his swim made him want to give up. (2) His father said he had offered his son 100 dollars as a reward; to encourage his struggling son, he doubled it to 200 dollars. James pushed forward, making it to Alcatraz Island and back in a little more than 2 hours. Alcatraz is over a mile from the mainland.

2. What did the father do to encourage his son?

解析：A。根据录音末尾部分可知，男孩的父亲说，他原本许诺给儿子100美元作为奖励，后来为了鼓励苦苦挣扎的儿子，他把奖励翻倍，提高到200美元。doubled为原词复现，故正确答案为A。