机器语言是以二进制代码形式表示的，用它编写的程序是（），能为计算机接受并执行。
A.源程序
B.目标程序
C.翻译程序
D.连接程序
参考答案：B
选择适当的单词填空。
football basketball volleyball piano violin
1. Yao Ming (姚明) likes playing ________.
2. Lang Lang (朗朗) likes playing the_________.
3. Zhao Ruirui (赵蕊蕊) is a ________ pfayer(运动员).
Please ______ the light when you leave the room.[ ]
A．turn off
B．turn on
C．turn up
D．turn down
