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13．聽第9段材料，回答第14至16題．
14．Which does the man think is of no use at all？
A．The whistle（哨子）．
B．The torch．
C．The tinned （罐裝的） food．
15．For what reason does the woman insist on taking a whistle？
A．It is light to carry about．
B．It can be used to attract attention．
C．It takes up little space．
16．What does the man think is a better way to take food with them？
A．Put it in tins．
B．Put it in small dry packets．
C．Put it in plastic bags．

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