价值观
参考答案：
是人们对于某种事物、行为或事态的构想、概念和判断。
The other day, my father drove his car at ______ I thought was a dangerous speed.[ ]
A. as
B. that
C. which
D. what
扫描仪用（）描述设备再现色调细微变化的能力。
A.动态范围
B.光学分辨率
C.机械分辨率
D.色彩深度
