单选题
Which of the following best summarises the main idea of the passage?
A、
(A) The advantages of online training game have been exploited by many companies to save money.
B、
(B) Video games have been used as training tool for the military.
C、
(C) Companies tend to use online game as the marketing tool.
D、
(D) Online training game will become a major industry in the following years.
【正确答案】
A
【答案解析】
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