读地质剖面图，回答1～2题。

1．图中字母ABCD中，可能找到地下水的是 [     ]

A．A  

B．B  

C．C    

D．D

2．下列地貌中，与A形成原因相同的是 [     ]

A．泰山        

B．渭河平原

C．汾河谷地    

D．华北平原

The shoes are _____and are worth _____.

A．of great quality; to buy

B．great quality; to buy

C．of great quality; buying

D．great quality; buying