The elderly need special care in winter,as they are _______ to the sudden change of weather.A.sensitiveB.sensibleC.flexibleD.positive
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A解析四个选项的形容词意思分别为:sensitive敏感的,容易感受的;sensible可觉察的,感觉得到的;flexible灵活的,可变通的;positive积极的,有自信的.该句为含有原因状语从句的主从复合句.本句是说年老的人在冬季需要特殊照料,因为他们对天气的突然变化很敏感,故