第16题: [单项选择]How could Dennis distinguish between a small ball and a large ball from a distance of 3 feet The large ball would produce ______. A. a sharper sound B. a softer sound C. a higher-pitched sound D. a louder sound 参考答案:D 答案解析:该题问:在三英尺远的距离,Dennis怎样区别一个小球和一个大球 大球会发出怎样的声音 A项意为“尖利的声音”;B项意为“柔软的声音”;C项意为“更高一些的声音”;D项意为“更大些的声音”。从本文的第