奉为圭臬fâng wãi guÿ niâ
参考答案：
奉：信奉；圭：测日影器；臬：射箭的靶子；圭臬：比喻事物的准则。比喻把某些言论或事当成自己的准则。
Mr. Li regards Ningxia as his second _______ because he has been here for over twenty years. [ ]
A. family
B. house
C. room
D. home
如果内存变量和字段变量均有变量名“姓名”，那么引用内存变量的正确方法是
A．M.姓名
B．M ->姓名
C．姓名
D．A项和B项都可以
