Yao Ming works hard on his English and _

At last the boy had no choice but_____the bread from the supermarket.  [    ] 

A. admit to have stolen                        

B. admit having stolen    

C. to admit to have stolen                      

D. to admit having stolen

微型计算机的主存储器由半导体存储器______ 组成。

抑郁发作的临床特征为？

简述中子星的特征及其形成

Girlbert综合征