There is ____ as a free dinner in this world, as the saying goes, "No pains, no gains."[ ]

A. no such a good thing

B. such no good thing

C. no such good thing

D. such no a good thing

东汉名医华佗医技高明，朝廷曾多次召他进宫作官，但均被他拒绝，最后惹怒曹操，竞被投入监狱惨遭杀害。从这个案例体现了华佗的医德思想是（）

A.不怕艰苦

B.不分贵贱

C.不畏权势

D.不断进取

E.不图钱财