单项选择题

中国南方地裂缝主要发生于以下哪一种类型的特殊土中？

A．冻土
B．湿陷性黄土
C．盐渍土
D．膨胀土

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单项选择题

11.As a lyrical line or melodic phrase that makes the song memorable, ___________ summarizes what the song is about. It’s in the chorus and often the line with the title in it – the first or last line of the chorus.

A．.chorus
B．.hook
C．.verse
D．.break

单项选择题

A、A
B、B
C、C
D、D