We are from China and we ___ Chinese. [ ]
A. say
B. talk
C. speak
D. tell
答案：C
小儿腹膜后恶性畸胎瘤有诊断价值的血清学检查是
A．癌胚抗原(CE
B．乳酸脱氢酶(LD
C．甲胎蛋白(AF
D．3-甲氧基-4-羟基杏仁酸(VM
E．铁蛋白
问题分析
