单选题 The patient's health failed to such an extent that he was put into ______ care.
【正确答案】 C
【答案解析】[解析] 根据句意intensive(精心的)修饰care(照料),其余几项的词义分别为:A.“绷紧的,紧张的”;B.“刚硬的,刻板的,严厉的”;D.“紧的,拉紧的,密封的,挤满的”。