【C10】A．thereforeB．orC．andD．as

【C10】A．ThereforeB．In additionC．In contrastD．Nevertheless

【C10】A．ThereforeB．On the other handC．What"s moreD．Instead

【C12】A．andB．orC．thanD．as

【C2】A．butB．orC．andD．while

【C10】A．thereforeB．henceC．accordinglyD．nevertheless

【C10】A．as ifB．as thoughC．as forD．as