In the three communities______. A.the aged must retire at a certain age B.the aged worked till death C.there is no retirement age the aged must observe D.the aged needn't work if they don't like to
A.A.the B.the C.there D.the
【参考答案】
C 解析：本题问作者拜访的三个社区有什么共同点。文章第五段指出，三个社区都不存在强制退休年龄。因此，本题的正确答......