第5题: [单项选择]Which of the following is the most appropriate title for the passage What can be inferred about the annual world GDP A. It is $3.5 trillion. B. It is $30.5 trillion. C. It is $35 trillion. D. It is $350 trillion. 参考答案:C 答案解析:[分析] 数字信息的找寻和推断。 根据原文第一句中所提供的数字,进行简单运算推断,可知选项C的说法是正确的。 [解题关键] 找寻数字信息并进行简单运算。根据文中所给的数值及