表面具黄色和红色的彩晕
A.滑石B.信石C.雄黄D.赭石E.炉甘石
参考答案:B
在固体培养基上常出现迁徙生长现象的细菌是()
A.大肠埃希菌
B.伤寒沙门菌
C.克雷伯菌
D.变形杆菌
E.痢疾志贺菌
— Jordon is such _____ honest student that I always believe him.
— I believe him, too. He never tells _____ lie to me.[ ]
A. an; a
B. an; the
C. the; a
D. a; a