这次访问就农业合作方面达成了许多共识，美国农业生产上形成了小麦区、玉米带、乳畜带等农业区，这反映了美国农业生产的特点是（    ）

     Don't throw away some old things．We can____them．We can put our pens and pencils in____．They will be nice____．We can put flowers in some bottles；they will be nice____．We can stick some____together and put our cards in them．How interesting!