问：Mom and Dad,this is Tom.回答：A;Nice to meet you,Tom B:How are you C:Please sit down,Tom
问题描述：
问：Mom and Dad,this is Tom.回答：A;Nice to meet you,Tom B:How are you C:Please sit down,Tom
答
A,一般表示礼貌,初次见面要先问好,如"很高兴见到你""你好"等.