Life is more than merely trying to achieve thestandards of society but trying to be a good person one’s own standards.
A. at
B. in
C. on
D. by
网友回答
A. at
B. in
C. on
(答案→)D. by
解析：句意，生命不仅仅是努力达到社会标准，而是努力按照自己的标准，成为一个好人。At在 in在……之中 on在……上 by按照，根据题意，故选D。