开发区污染源分析要特别注意考虑（）存在较大不确定性、阶段性的特点。

A.入区项目类型与布局

B.入区项目类型与投资规模

C.规划的发展目标

D.规划的发展规模

______ on the portrait, mother was deep in thought.

A．Fixed her eyes

B．Her eyes are fixed

C．Her eyes fixing

D．With her eyes fixed