【正确答案】 A

【答案解析】解析：be subject to受……支配的；易遭……的(如：We are subject to the laws of the country／to the rules of the school/to the laws of nature．You can leave early subject to the headmaster's approval：He is subject to colds／to headaches．)。liable a．常爱，常常会(to+动词原形)：易得(……病)，可能会受到(…惩罚to)。apt a.(习性)易于……的，有……倾向的(to+动词原形)。submissive(to)a.温顺的，顺从的。