Your cousin is said ____ a new computer programme recently, but do you know when he will finish it?

A．to design

B．to be designing

C．to have been designing

D．to have designed

对艾滋病病人产生歧视的根源在于（）

A.对HIV传播途径的无知

B.机会感染造成躯体损害

C.输入被HIV感染的血液制品

D.卖淫、嫖娼是社会丑恶现象

E.多性伴侣行为