何种肾肿瘤术后,配合放疗与化疗提高生存率最显著?()
A.肾透明细胞癌
B.肾颗粒细胞癌
C.肾母细胞瘤
D.肾盂癌
E.肾脏未分化癌
参考答案:C
人体中的钙元素主要存在于骨胳和牙齿中,以羟基磷酸钙晶体[Ca10(PO4)6(OH)2]形式存在,羟基磷酸钙由______种元素组成,每个羟基磷酸钙分子中含有______个原子,其中钙元素与氧元素的质量比为______,磷酸根(PO4)的化合价为______价.
After a long journey across the whole country from north to south, they found themselves ________ as
well as their clothes. [ ]
A.picked out
B.called out
C.caught out
D.worn out