根据图画用所给的单词选择填空。
建国初期西藏的和平解放、抗美援朝、土地改革起到的共同作用是（ ）
周瑜惭愧地低下了头。
①疑问句：____
②否定句：____
③反问句：____
④双重否定句：____
3.25小时=____小时____分 2吨50千克=____吨
Wang Lei
How old is he?
1.
Where does he live?
2.
How far is it from his school?
3.
How does he get to school?
4.
Why did the whole school know him?
Because he got the first place in 5.
一个不透明口袋中装着只有颜色不同的1个红球和2个白球，搅匀后从中摸出一个球，摸到白球的概率为（ ）.
