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举一反三
【单选题】某张音乐合辑中包含9首钢琴曲和若干首小提琴独奏曲，在随机播放时听到的第一首是钢琴曲的可能性为60%，那么钢琴曲的数量比小提琴独奏曲的数量( )。
A.
多3首
B.
多6首
C.
少3首
D.
少6首
【单选题】下列有关图层的叙述，错误的有（）。
A.
图层名必须是唯一的
B.
图层名最长可达256个字符
C.
图层名中可以包含文字、数字与其他字符
D.
图层名中不允许含有大于号、斜杠以及标点等符号。
【单选题】Elephants who paint aren’t new. Paintings by Ruby, an Asian elephant who lived at the Phoenix Zoo in Arizona, sold for up to $ 5,000 in the late 1980s, said Dick George, a consultant with the zoo. "Ru...
A.
who was sold for a price as high as $ 5,000
B.
who was famous for being the first painting elephant
C.
whose paintings sold for as high as $ 5,000
D.
who started painting in the late 1980s