计算机系统由运算器、存储器、______、输入设备、输出设备五大部件组成。
参考答案:控制器
–Volunteering is becoming popular in China.
--Yeah, people are now aware that helping others is helping themselves
A.naturally
B.successfully
C.splendidly
D.increasingly
以下哪一项是Visual Basic合法的数组元素( )。
A.X9
B.X[4]
C.x(1.5)
D.x{7}