定理:“30°所对的直角边等于斜边的一半”.请你作出图形并写出“已知”、“求证”.
已知:Rt△ABC中,∠ACB=90°,∠A=30°,
求证:BC=12AB;
根据句意,汉语提示和首字母,填写单词。
1.— Who can s_________ this song?
— I can.
2.My telephone n is 295-8146.
3.His f number is eight.
4.— What c is your pen?
— It's black.
5. Jenny a Mary are friends.
6. I am 1.6 m tall.
7. I have a new (连衣裙).
8. H name is Li Ming.
9. Jim is a (男孩).
10. How many (老师) do you have?
气体溶质在溶剂中的溶解度随温度上升而()
A、减小
B、不变
C、增大
D、以上均错误