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问题 填空题
我们知道，在平面中，如果一个凸多边形有内切圆，那么凸多边形的面积S、周长c与内切圆半径r之间的关系为S=
1
2
cr．类比这个结论，在空间中，果已知一个凸多面体有内切球，且内切球半径为R，那么凸多面体的体积V、表面积S'与内切球半径R之间的关系是______．
答案

在平面中，如果一个凸多边形有内切圆，那么凸多边形的面积S、周长c与内切圆半径r之间的关系为S=

1
2
cr．

类比这个结论，可得

个凸多面体有内切球，且内切球半径为R，那么凸多面体的体积V、表面积S'与内切球半径R之间的关系是V=

1
3
S′R，

故答案为 V=

1
3
S′R．

阅读理解
阅读理解。
                              Report  Card   London Woodland School
Name: Alan        Class: 5        Grade: 8
Grade teacher: Mr Jim Green
English: Good work this term. He has a good memory and is good at speaking.       A
Maths: Good. But sometimes he is careless.                                                            B
History: He knows a lot about British history, but little about other countries.           B
Geography: He is a clever student but sometimes doesn't do his best.                      C
Home Economics: Good. He likes it best. He can do things for himself.                   A
1. Alan is studying in _________.
A. Class 8, Grade 5
B. Mrs Green's class
C. Woodland School    
D. America
2. Alan does well in _________.       
A. English and Home Economics     
B. English and Geography
C. Maths and Geography   
D. History and Geography
3. Which of the following is right?   
A. Alan knows a lot about American history.    
B. Alan is clever and careful.
C. Alan got a good result in Geography.     
D. Alan has a good memory.
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多项选择题

根据《经营者集中申报办法》的规定，经营者集中附加限制性条件包括（）。

A.结构性条件和行为性条件相结合的综合性条件

B.决定性条件

C.参与集中的经营者开放其网络或平台等基础设施、许可关键技术、终止排他性协议等行为性条件

D.剥离参与集中的经营者的部分资产等结构性条件
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