21、
A.Twenty-nine days.
B.Two and a halfmonths.
C.Several minutes.
D.Fourteen hours.
22、
A.They welcomed the publicity in the media.
B.They avoided appearing on television.
C.They released a video ofhis progress.
D.They declined to give details ofhis condition.
23、Passage Three.
听材料,回答下列各题:
A.For people to share ideas and show farm products.
B.For officials to educate the farming community.
C.For farmers to exchange their daily necessities.
D.For farmers to celebrate their harvests.
24、
A.They contribute to the modernization of American farms.
B.They help to increase the state governments' revenue.
C.They provide a stage for people to give performances.
D.They remind Americans of the importance of agriculture.
25、
A.By bringing an animal rarely seen on nearby farms.
B.By bringing a bag of grain in exchange for a ticket.
C.By offering to do volunteer work at the thir.
D.By performing a special skill at the entrance.