下列测试形式具有_______________的某些特点。 You were applying to a university and needed a letter of recommendation. You went to a professor, who was also your friend, and said: A: "I'd appreciate if you could write a letter of recommendation for me. ” B: "I want to ask you to write a letter of recommendation for me." C: "I wonder if you could write a letter recommendation for me." D:"Hey, give me recommendation letter." (评分标准:A 正确,得2分;B 语法正确,不够得体,得1分;C 较得体,但语言有误,得1分;D 语言有误,内容不得体,0分。)