【单选题】You can take the person out of nature, but you can't take nature out of the person. The latest scientific thinking tells us that even in the modem workplace, we're still at the mercy of basic biology....
A.
you can change a person's nature for a while, but you can't change it permanently
B.
you can change man's living conditions, but you can't change his nature
C.
you can follow biological roles but you can't break them
D.
you can improve yourself but you can't change your nature