根据句意用所给单词的适当形式填空。

Everyone should behave ____  in public. (polite)

 --Who's that boy standing over there?  --Sam, a foreign friend of____ . (I) 

After working all night, Kate couldn't stay____ the next morning. (wake)

The UK is an old ____ country, where there are many palaces and castles. (Europe)

Nothing would prevent UNICEF, an international charity,____ the living standards of the children in poor areas. (raise)

____ (choose) me and I can make my classroom beautiful.

以下统计数据表明我国在人口方面存在的问题有(     )

注：第六次人口普查同第五次相比，65岁及以上人口（老年人口）的比重上升1.91%。
①我国人口增长速度总体上已呈下降趋势，人口总数下降   ②我国人口文化素质偏低
③我国的人口老龄化加快                                                           ④我国人口总量大 

下列不属于性状的是（　　）

观察漫画，回答下列问题。