题目1单选题
设f(x)在[-a,a](a>0)上连续, 且f(x)为奇函数,则 <img src="https://tihai-oss-cloud.itihey.com/img/65a0c59d7cc32cb91510824f5082a83a.png">=( )A. 0B. <img src="https://tihai-oss-cloud.itihey.com/img/067769c4284b375c76f5e7e8b2fd31fb.png">C. <img src="https://tihai-oss-cloud.itihey.com/img/e591b50343331577a763a393d2dc7435.png">D. <img src="https://tihai-oss-cloud.itihey.com/img/154cbb52818e2a519e4ece9c41171b4a.png"><img src="https://tihai-oss-cloud.itihey.com/img/e591b50343331577a763a393d2dc7435.png">