Lily _      _ Lucy may go with you because one of them must stay at home .           [ ]

A. Not only; but also

B. Either; or

C. Both; and

读某地地质剖面图，回答下列小题。

下列地质事件由先到后发生的顺序为（）

①断层

②砂岩

③页岩

④花岗岩

⑤侵蚀面

A.③②④①⑤

B.④③②①⑤

C.⑤③②④①

D.⑤③④②①