It was raining heavily, Little Mary felt cold, so she stood _____ to her mother.

A．close

B．closely

C．closed

D．closing

（）的航海切身证实了地球是圆的这一理论。

A.哥伦布

B.麦哲伦

C.郑和

D.巴尔托洛梅乌·迪亚斯