小题1:More than 6000.
小题2:Chinese.
小题3:Yes,it is.
小题4:Yes,they do.
小题5:Because in the modern world English is widely used for business between different countries.
小题1:More than 6000.
小题2:Chinese.
小题3:Yes,it is.
小题4:Yes,they do.
小题5:Because in the modern world English is widely used for business between different countries.