下列人物中,对中国古代四大发明做出重大贡献的是( )
A:张衡、毕昇
B:蔡伦、华佗
C:蔡伦、毕昇
D:张衡、华佗
68角=____元____角
76角=____元____角
I saw the doctor_____ in the city of Shanghai last year. Maybe he comes from Shanghai.
人们常用唐代诗人王勃《送杜少府之任蜀州》中的诗“____,____”,表达朋友虽然相距遥远却如在身边的感情
He ____ (dress) more casually if he ____ (not work) on weekends.