Young people always look into the future, while old people like to look back into the past

Young people always look into the future, while old people like to look back into the past. This is both men and women.

A. true of
B. different from
C. similar to
D. difficult in

(答案→)A. true ofB. different fromC. similar toD. difficult in解析：句意：年轻人总是展望未来，而老人喜欢回顾过去，这一点对于男士与女士也是适合的。Be true of对……适合（正确的）；be different from 与……不同，主语与from后的宾语是同类的，故排除B。be similar to与……相似，主语与to后的宾语是同类的，故排除C；be difficult in在……是难的。根据句意故选A。

我明天再问问老师，叫他解释下这个问题