参考答案：C

解析：
There are two very important things you must do as an investor -- before any of your hard-earned money leaves your hand -- and that is to research and to study. You must research the financial pages of your local newspaper as well as the Wall Street Journal, and any other publications you can get your hands on. Decide which stocks are affordable, are performing well, and have a good track record. Visit your local library and study all the information you can find on the stocks you are considering buying into. Find out what plans for expansion the companies have. Study the market and find out as much valuable information as you can about each company.

[分析]： 事实细节的找寻和判断。
段落首先点明主题，投资者有两件重要的事需要做，那就是研究和学习。然后具体指导投资者应研究和学习的内容。除选项C“向投资专家咨询”的内容外，其它选项的内容均与原文相关部分吻合，因此C项是正确答案。
[解题关键] 注意文中排比句式的使用，该结构是典型的支持性细节，用来进一步说明主题。该题中使用了若干祈使句，而各选项内容均与某一祈使句对应。