第8题: [单项选择]______ of 70 years old, he decided to sail single-handed across the Pacific Ocean. A. On the verge B. At the risk C. In the course D. For the sake 参考答案:A 答案解析:[考点] 词组用法辨异。on the verge of接近于,濒于:The child was on the verge of tears.这孩子快要哭了。at the risk of冒着……的危险;