问题
单项选择题
Which of the following statements can be inferred from the passage
a. An investor of trading stocks only cares about the fixed assets of companies.
b. A buyer of investing stocks is always concerned about the performance of companies.
c. Most people keep their investing stocks for a longer period of time.
d. All people buy trading stocks and investing stock at the same time.
答案
参考答案：C
解析：
Which of the following statements can be inferred from the passage
[分析]： 事实细节的找寻和判断。
关于交易股和投资股的知识，原文一开始给予介绍，从第一段第二句可知，交易股的持有的时间为几周甚全几大，后面文中使用表示对比的信号词“by contrast”过渡到投资股的介绍，由此可判断，投资股持有的时间必定不会短。因此，选项c的说法与原文意思相符，是正确答案。
[解题关键] 通过信号词判断上下文的语义逻辑关系，有助于解题，如通过by contrast可判断其上下文是对比关系。