银幕常用粗糙的白布做成，其优点在于：一是利用使坐在各处的观众_爱下问搜题

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问题填空题

银幕常用粗糙的白布做成，其优点在于：一是利用使坐在各处的观众都能看到画面，二是白布能反射颜色的光，能使观众看到色彩正常的画面。

答案

漫反射各种色光

题目分析：光线照在粗糙的白布上发生漫发射，漫反射的光线射向各个方向，使坐在各处的观众都能看到画面；要使观众看到色彩正常的画面，必须能看到各种色光，白布能反射各种色光。分别填“漫反射”、“各种色光”。

填空题

根据短文内容及首字母提示,完成下列单词拼写。

I have a g___1___ friend in my school. Her n____2____ is Li Ying. She gets up early every day. She

likes to b___3___ early. She does morning exercises a___4___ she gets up at six. Then she washes her

hands a___5___ face. She has breakfast at a____6__ six forty. She leaves home at 7 o'clock. C___7__ begin at ten to eight. And she has four classes in the morning and two in the a__8____. At 3:30 she plays

games with her f___9___. She gets home at 5:30. She often watches CCTV news at 7:00 in the evening. And she goes to bed at ten e___10___ night.

填空题

多栏报表的打印顺序应设置为 ______。