Tricks are often ______those who don’t look clever or smart

A．laughed at

B．greeted

C．played on

D．made to

C3缺陷患者易发生（）

A.反复化脓菌感染

B.慢性肉芽肿病

C.血管神经性水肿

D.致死性化脓菌感染

E.白细胞黏附缺陷病