根据英文释义及首字母提示，完成下列单词拼写。

1. f________ (at last; in the end)

2. r________ (give back; come back)

3. f________ ( not remember)

4. t________ (a person who goes to visit other places)

5. r________ (use something by paying money)

农业防治方法的首要内容是（）。

A、合理施肥

B、选育和利用抗（耐）病品种

C、冬翻土地

D、及时收获