The elderly need special care in winter as they are to the sudden changes of weather.A. s

问题补充：

The elderly need special care in winter, as they are to the sudden changes of weather.

A. sensitive

B. sensible

C. flexible

D. Positive

答案：

(答案→)A. sensitive

B. sensible

C. flexible

D. Positive

解析：本题考查形容词的意义辨析。sensitive“敏感的，灵敏的”，常构成短语be sensitive to “对……敏感，易受影响”；sensible“合理的，可感觉到的，明事理的”，可构成短语be sensible of“察觉到……”；flexible“灵活的，能形的，可通融的”；positive“积极的，肯定的”。根据题意“冬季老年人需要特别的关爱，因为他们对天气的突然化很敏感。”故选A。