真正的团结离不开相互提醒，相互监督。（）
参考答案：对
His words made me really angry . The underlined part is _____ of the sentence.[ ]
A. predicative
B. object complement
C. indirect object
D. direct object
要从学生表中找出姓“刘”的学生，需要进行的关系运算是______.
A) 选择 B) 投影C) 连接 D) 求交
