As we know, Jean is a investor（投资者）who studies the market before he buys things.
A. lucky
B. cautious
C. patient
D. generous
网友回答
A. lucky
(答案→)B. cautious
C. patient
D. generous
解析：形容词义辨析题。“我们知道Jean是一个谨慎的投资者，在买东西之前他会认真研究市场” A. lucky幸运 B. cautious 谨慎 C. patient 耐心 D. generous 慷慨 选B