“（蒋）介石先生······领导全国各民族进行空前伟大的民族革命战争，凡我国人无不敬仰······***谨启。民国二十七年九月二十九日。”，这封信的直接背景是
A：抗日民族统一战线正式建立
B：国民党在正面战场抵抗日军
C：中国国民政府正式对日宣战
D：世界反法西斯阵营最终形成
A. Is the man your father? B. No, I don't.
C. What are you going to be one day? D. What does he do?
E. Who's the man? F. Where does he work?
G. Does your father work in a car factory?
A:Hello. ____
B:Yes, he is my father.
A:____
B:He is an engineer.
B:He works in a car company. He likesdrawing pictures.
A:Do you like drawing pictures?
B:____ I like singing.
B:I'm going to be a singer one day.
七大洲中面积最大的是 （ ）
