新托福听力经典加试完整版
男student: Professor, I hope to discuss my term paper with you. I got stuck in writing the paper on bird migration. I have difficulties in finding enough materials about bird migration. (老师，今儿，我想跟你说说我的学期论文的事儿。我卡住了，找不到这方面的资料。)【资料下载】托福听力经典加试完整版
