某物料产品中含有70%小于筛孔尺寸，筛上中有10%小于筛孔尺寸，求其筛分效率。
参考答案：
答：其筛分效率为95.24%。
根据所给词或汉语提示完成句子。
1. Would you mind _____ (turn) down the TV?
2. I used to be _____ (terrify) of the sea, because I didn't know how to swim.
3. She's not _____ (interest) in studying all the time.
4. Lucy is good at _____ (paint) pictures.
5. Don't worry about things so much. It will make you _____ (stress) out.
6. You should pay _____ (注意) to your pronunciation.
7. His father has _____ _____ (放弃) smoking.
8. The boy is busy _____ _____ _____ (玩电脑游戏).
9. His uncle didn't work here _____ (不再).
一种绿色的化合物加热至完全分解，生成了氧化铜、二氧化碳和水，则该化合物是由___________元素组成的（填元素符号）
