题目

Mr. John was always _______ the poor and the sick, often providing them with free medical care. A．tended by B．absorbed in      C．reminded of    D．concerned about 答案：D 解析: 考察动词短语辨析。关心、关注。后面说了：他经常给穷人病人提供免费医疗1吨的钢材要比1000千克的木头重一些。（______）