Structured programming practices (71) rise to Pascal，in which constructs were introduced to make programs more readable and better (72) . C provided a combination of assembly language and high-level Structure to create a general-purpose language that could be used from system to (73) programming. Next came object orientation，which is (74) of a methodology and design philosophy than a language issue．This is (75) by the addition of so-called OO extensions to current languages，such as C．

A．evidence

B．evidenced

C．evidences

D．evidencing

一般正常的Q波时限应（）

A.<0.04s

B.<0.06s

C.<0.08s

D.<0.10s

E.<0.12s