/images/1041385860215607387/1255674156704596008/do-thi-toan-ky-nang-dai-su-chuong-212-nha-bao-che-thuoc-kiem-tra.txt?ex=667dfd30&is=667cabb0&hm=83f53d4a2faa7034258f24fd958578ac9aaf0d6ba57f6d4811aad4c585022391&