不属于数据定义功能的SQL语句是______。
A.CREATE TABLE
B.CREATE VIEW
C.UPDATE
D.CREATE INDEX
参考答案:C
《文心雕龙》论述文学作品内容和形式的关系,认识比较全面的是()
A、《神思篇》
B、《情采》
C、《时序篇》
D、《知音篇》
Pupils often want to sit next to their particular friend and many classroom activities involve moving about, but even relatively small alterations can make ______ to the visual comfort of pupils with sight defects.
A. a difference B. an interference C. a modification D. an impact