第20题: [单项选择]When mentioning "average annual returns" (Paragraph 5), the author is talking about A. home buying, B. stock market. C. venture investment. D. job market. 参考答案:B 答案解析:题干问;“当提到‘average annual returns 平均年回报’时,作者谈论的是……。”作者在文章第5自然段开头提到"the return on the stock market",而且多