Nokia, ______ world's largest mobile phone producer, is going to found ______ new research center in China.A.a; aB.a; theC.the; theD.the; a
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D解析句意：诺基亚，世界上最大的手机生产厂家，将在中国建立一个研究中心。world作“the body in space on which we live; the earth世界，地球”讲时，常与定冠词the连用，如：the world's tallest building世界上最高的大楼；第二空表示泛指，要用不定冠词。