【单选题】Designers are experimenting with a new material ______ flexibility with lightness.
 A、is combining
 B、has combined
 C、that combines
 D、combination of
网考网参考答案:C
网考网解析:
横线前已经构成完整的结构,这说明______ flexibility with lightness修饰material。横线处应填入(C)that combines,形成定语从句。 横线处所填单词修饰名词box,句意应为“放- 入午餐厅提供的盒子里”,因box与provide之间是被动关系,故选择过去分词(A) provided。
                 
				 
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