—How beautiful the song You and Me _________! Who _______ it ________ by?

—Liu Huan and Sarah Bringtrnan.

A．is sounded , is , sung

B．sounds , does , sing

C．is sounded , does, sing

D．sounds ,is , sung

铣削直角沟槽时，铣刀的宽度应等于或大于所加工直角沟槽的宽度。