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4.The train ads were placed among family-oriented TV programs involving nature and America because ________.
A) they could focus on meaningful travel experiences
B) they could increase the effectiveness of the TV programs
C) their profits could be increased by some 15 percent
D) most travel-lovers and nervous fliers were believed to be among the audiences
A) they could focus on meaningful travel experiences
B) they could increase the effectiveness of the TV programs
C) their profits could be increased by some 15 percent
D) most travel-lovers and nervous fliers were believed to be among the audiences
参考答案