问题详情：
—I've heard that another brand of milk powder has been banned.
—It's a shame that some companies ________ the sense of social responsibility.
A. lack B. expose
C. miss D. reject
【回答】
*:A
解析:题意：“我听说另一个牌子的奶粉也被禁止销售了。”“某些公司缺乏社会责任感，真可耻！”lack“缺乏；缺少”，符合题意。expose“暴露”；miss“错过”；reject“拒绝”。
知识点：动词
题型：选择题
