彩色胶卷的主要成分为()片基和适量的增感剂等,可产生不同的感色性,使每一层感光乳剂只对()三原色光中的一种感光,达到分色的效果。
参考答案:卤化银、明胶;蓝、绿、红
She ____a smile when she heard her family went to Italwithout her. [ ]
A. wore
B. managed
C. performed
D. controlled
You should _______ the garbage in the yard and put it into the dustbin. [ ]
A. pick up
B. take out
C. turn into
D. throw away