【C8】A．factB．contrastC．additionD．consequence

【C7】A．contrastB．generalC．additionD．brief

【C19】A．by contraryB．on contrastC．by contrastD．on contrary

【C10】A．by contrastB．for instanceC．in additionD．however

A．differenceB．contrastC．changeD．improvement

【C6】A．Above allB．For instanceC．In additionD．As a result

A．in other wordsB．by contrastC．for exampleD．in particular