单选题 As photographic techniques have become more sophisticated, the scope of their application has expanded______.
【正确答案】 D
【答案解析】解析:句意:当摄影技术发展得越来越成熟时,它们的应用领域也扩展得非常大。A“不光彩地”、B“残忍地”、C“恶意地”均不符合句意,只有D项enormously表示“巨大地,非常地”,与句意相符,故为答案。