以下属于地理顶级域名的是()。
A.cn
B.uk
C.jp
D.biz
参考答案:A, B, C
已知点A(0,2)抛物线y2=2px(p>0)的焦点为F,准线为l,线段FA交抛物线与点B,过B做l的垂线,垂足为M,若AM⊥MF,则p=( )
The little girl who got lost decided to remain ____she was and wait for her mother.
A.where
B.what
C.how
D.Who