题目选项分析

Using accounts of various researchers, Colstrom scientists have known for decades that for every kind of particle - whether the familiar electrons, neutrons or protons, or the more recently discovered quarks and neutrinos - there exists a particle that is its mirror image, identical in mass and amount of charge, but different in at least one crucial way.

With accounts of various researchers used for a basis, Colstrom scientists have known for decades that for every kind of particle - whether the familiar electrons, neutrons or protons, or the more recently discovered quarks and neutrinos - there exists a particle that is its mirror image, identical in mass and amount of charge, but different in at least one crucial way.