What do you usually eat _____ your birthday party?[ ]
A. at
B. in
C. after
D. on
答案:A
诊断蛋白质营养不良的较好指标是
A.血浆胰岛素样生长因子I
B.视黄醇结合蛋白
C.甲状腺结合前白蛋白
D.转铁蛋白
E.前白蛋白
眼内污染毒物时,必须立即用清水冲洗
A.2~5minB.至少5minC.5~10minD.至少10minE.10~15min