For the limited-capacity tour programs, the use of _____ is a co

2024-08-31 01:40:27
英语科技文选(00836)

For the limited-capacity tour programs, the use of _____ is a convenient way to reduce cost
A、shell folders
B、umbrella brochures
C、regular tour brochures
D、booklets
【正确答案】：A

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