单项选择题
A．国际贸易增加了跨国文化交流的机会，也提高了经理的技能。
B．国际贸易提高了对经理掌握跨国文化交流技能的要求。
C．国际贸易的增加需要具有跨国文化交流技能的经理。
D．国际贸易增加了对经理文化交际能力的需求。
单项选择题 There is nobody who has never made any friends in his life．Simply he has not made any intimate ones（）
单项选择题 According to the passage, which of the following factors most influences where life is found on earth（）
单项选择题 According to the passage, human beings can survive almost everywhere on Earth because （）