清晰度
参考答案：影像上各细部影纹及其边界的清晰程度。
He raised his voice to make everybody in the room him clearly. [ ]
A. heard
B. hear
C. to hear
D. hearing
马克思主义理想信念的基础是（）
A.科学
B.信仰
C.革命
D.知识
