I. 单项选择
1. Difficulties and hardships have_________ the best character of the young geologist.
A. brought in B. brought up C. brought out D. brought about
答案：C. bring out的意思是“发挥（才华、个性等）”,和题干中的character相搭配；bring in 表示“搬进，获利”等；bring up表示“养育；呕吐；提出”等；bring about表示“导致，引起（事故）”等，均与题意不符。