根据短文内容及首字母提示，填写所缺单词，使短文意思完整。

Mr Johnson didn’t have an experience of travelling in a plane before and he read a lot a小题1: air accidents, so one day when a friend offered to take him for a ride in his own small p小题2: , Mr Johnson was very w小题3:   about accepting. Finally, however, his friend promised him that it was very s小题4: , and Mr Johnson boarded the plane.

His friend started the engine and began to taxi(滑行) onto the runway of the airport. Mr Johnson h小题5: the sound of the engine. He was extremely frightened and c小题6:  his eyes.

After a minute, he opened t小题7:  again, looked out of the w小题8:  of the plane, and said to his friend , “ Look at the people down there. They look as small a小题9:  ants, don’t they?” “Those are ants,”answered his friend. “We’re s小题10:  on the ground.”

在计算机内一切信息存取、传输都是以()形式进行的。

A．ASCII码

B．BCD码

C．二进制

D．十六进制