蜘蛛痣一般不易见于

A．面部

B．颈部

C．手背

D．前胸

E．腰部

I shall never forget the day________Shenzhou was launched, ________has a great effect on my life.[ ]

A. when;  which  

B. that;  which

C. which;  that  

D. when;  that