化学影响着社会的发展和人们的生活质量，以下说法正确的是[ ]

A．焚烧废旧塑料可以解决“白色污染”问题

B．为了加强食品的色、香、味，可以大量使用添加剂

C．糖类和油脂在人体内经氧化放出能量，为机体活动和维持恒定体温提供能量

D．将草木灰和碳铵混合施用有利于提高肥效

For many years, the principle goal of computer (73) was to write short pieces of code that would execute quickly. The (74) needed to be small, because memory was expensive, and it needed to be fast, because processing power was also expensive.

A．users

B．programmers

C．that

D．program