___ good knowledge of psychology is essential to ____ studyof the colors because it can help to mesasure responses___som
问题描述：
___ good knowledge of psychology is essential to ____ studyof the colors because it can help to mesasure responses___some colors scientifically.
第一空选填A,The,/
第二空选填the,/
第三空选填to,of
都请说明原因,谢谢
答
A,the,to
有所指的,或前面提到过的用定冠词the,没提到过的,无所指的用不定冠词a
第三个空指对颜色的反应,用介词to