All the off-shore oil explorers were in high spirits as they read ________ letters from their families.
句意：读着亲人充满深情的来信，所有的离岸石油探险家都精神振奋。affectionate充满深情 的，温柔亲切的。sentimental感情上的，多愁善感的。sensitive敏感的。intimate关系密切的，亲密的。故选 B。