On ____ Friday when Tom was having an art lesson, as he had no color pencils with him, he

drew _____ blue sun with his pen. [ ]

A. 不填; the

B. 不填; a

C. the; the

D. a; a

在SQL查询中使用WHERE子句指出的是______。

A．查询目标

B．查询结果

C．查询视图

D．查询条件