In front of the Great Pyramid, Mr Lee stood _____ its great height, and asked many questions.

A．to gaze up at

B．to gaze down at

C．gazing up at

D．gazing down at

患者转移性右下腹疼痛，呈持续性、阵发性加剧，有局限而固定的压痛、拒按，同时可触及肿块，高热，汗出，脉洪数。下列不属于主穴的是（）。

A.阿是穴

B.大椎

C.阑尾

D.上巨虚

E.天枢