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【简答题】
团体旅客取消乘坐火车计划，需要退票，必须在开车前24小时办理。 （ ）
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皮皮学刷刷变学霸
举一反三
【单选题】What may the carmakers resort to for promoting their automobiles and cutting down expenditure?
A.
Buying low-priced ads on national television.
B.
Renewing new contracts with national stations.
C.
Shifting their advertising spending to the Internet.
D.
Relying on such print media as newspapers.