My parents want me to take _____ Maths lessons at the weekend, but I want to play and have fun. [ ]

A. splendid

B. extra

C. independent

D. fluent

我国打开对外开放的窗口开始于 [ ]

A．经济特区的创办

B．沿海开放城市的设立

C．沿海经济开放区的开辟

D．内地的开放