以下哪些连接词可以表示转折关系？ A: esides B: as well as C: howeve D: as a result

表示因果关系的词或词组是 A: owing to B: in conclusion C: in summary D: esides

We would not lower our price _______ you place an order for more than 500 tons. A: until B: esides C: unless D: although

We would not give you any lower price you could place an order for more than 500 tons. A: except B: until C: unless D: esides