以下各段叙述给出了5个计算机专业英文术语的英文解释。这些英文专业术语依顺序分别是 (1) 、 (2) 、 (3) 、 (4) 和 (5) 。

Messages that are sent electronically over a network.

A series of instructions (commands) performed in a sequence specifying actions to accomplish a task.

The character code built into most modem personal computers.

The minimal unit of information，it can have the value 1 or 0.

The brain of a computer, it contains the ALU, the clock, many registers, the bus interface and circuitry that makes these parts work together.

2（）

A．menu

B．tool

C．program

D．hardware

WHO规定：通过改变人们的饮食行为而达到改善营养状况目的的一种有计划活动称为（）

A.食物强化

B.营养宣传

C.合理膳食

D.合理营养

E.营养教育