“二为”方针，即坚持为人民服务、为社会主义服务的方针。
参考答案：对
The writer and teacher Smith ______ through millions of ups and downs since he moved to Sydney. [ ]
A. have gone
B. had gone
C. went
D. has gone
SQL语句中，DISTINCT短语的功能是（ ）。
A．．DBF和．DCT
B．．DBC和．DCT
C．．DBC和．DCX
D．．DBC和．DBF
