One of the guidelines in writing the C code for a software tool is as follows: write code that is as clear and as simple a (76) . The C language can be difficult to read if you combine all (77) features in a single statement. Break complicated (78) into several easy to understand statements for the (79) of readability. This style helps to make your programs more (80) and error-free.

77（）

A.readable

B.reusable

C.possible

D.semantic

E.syntactic

F.constructions

G.safe

H.impossible

I.sake

J.structure

高速公路联网收费的核心问题是要合理解决通行费的结算和清分，保证高速公路投资经营者的公平收益。为实现这一目标，联网收费的实施和建设需要具备一系列内部和外部条件，这些条件包括（）等。

A.统一车辆分型标准

B.路网内收费站、车道统一编码和定义

C.拆除不合理的收费站

D.统一数据传输格式和通信协议