A, "farming season" has different meanings in ancient times and modern times, referring to the season suitable for farming activities such as farming and harvesting;

B, the ancient meaning of "life" is to support the living, and the present meaning is to maintain the body;

C, the ancient meaning of "can" is yes, yes; Yes, yes, today means possible and capable;

The ancient meaning of d "however" is like this, and now it means a turning conjunction.

Answer: a.