确诊骨肿瘤的手段是（）
A.试验室检查
B.影响学检查
C.活检组织的病理学检查
D.X线检查
E.数字减影血管造影
参考答案：C
Iceland has the oldest parliament, which goes as far back to 930 A.D. when Althing, the legislative organization , was established.
A．office
B．adobe
C．assembly
D．building
13g锌粒与309.4g稀硫酸混合，恰好完全反应，求反应后所得溶液中溶质的质量分数．化学方程式为：Zn+H2SO4=ZnSO4+H2↑（相对原子质量：Zn-65、H-1、S-32、O-16）
