题目选项分析

In the last few decades, physicists have identified the existence of different "flavors" of subatomic particles called quarks, most of them at least as small as the electron, displaying a property known as color charge.

In the last few decades, physicists have identified the existence of different "flavors" of subatomic particles called quarks, most of them as small or smaller than the electron and displaying a property known as color charge.