In many countries in the world ,breakfast is a snack____a meal,but the traditional English breakfast is a

full meal     [ ]

A．rather than    

B．more than    

C．other than  

D．less than

对放射线低度敏感的肿瘤为()

A．乳腺癌

B．性腺肿瘤

C．食管癌

D．多发骨髓瘤

E．胰腺癌