Beijing ______ the 2008 Olympic Games and it makes Chinese people very proud.
A:will succeed in hosting
B:has succeeded in hosting
C:is succeeded in holding
D:succeeds in hosting
已知抛物线C:y=(x+1)2与圆 M:(x−1)2+(y−12)2=r2 (r>0)有一个公共点A,且在A处两曲线的切线为同一直线l.