甲状腺髓样癌最可靠的实验室诊断是（）
A.T3、T4
B.TSH
C.血清降钙素
D.儿茶酚胺
E.24小时NVMA（香草基杏仁酸）
参考答案：C
A troop of carefully selected soldiers set out in search of those who might________the terrible coal mine
accident. [ ]
A. live
B. rescue
C. exist
D. survive
山脉
