高三的时候，龚心源已是校团委书记，马大衡仍以他出众的学习成绩名扬校内。
B-Time I-Time I-Time I-Time I-Time O B-Person I-Person I-Person O O B-Organization I-Organization I-Organization B-Person I-Person O B-Person I-Person I-Person O O B-Person O O O O O O O O O B-Location I-Location O