【C10】A．directsB．guidesC．leadsD．conducts

[A] concentration [B] continuity [C] conformity [D] conductivity

A．didB．builtC．triedD．conducted

【38】A．concentrationB．continuityC．conformityD．conductivity

【C17】A．designedB．producedC．createdD．conducted

【C18】A．condensingB．conformingC．condemningD．conducting

【C6】A．directsB．leadsC．guidesD．conducts