| 28.In virtually all typesof tissue in every animal species, dioxin induces the production of enzymesthat are the organism’s trying to metabolize, or render harmless, thechemical that is irritating it. (A) trying tometabolize, or render harmless, thechemical that is irritating it (B) trying that itmetabolize, or render harmless, the chemical irritant (C) attempt to try tometabolize, or render harmless, such a chemical irritant (D) attempt to try andmetabolize, or render harmless, the chemical irritating it (E) attempt tometabolize, or render harmless, the chemical irritant
我理解答案是e，但是很好奇c中：such a chemial irritant,这里such读起来的确是多余，但是是为什么呢？请一枚nn指教，并且说一说such在gmat中单独的用法，不胜感激！！！ | 
