答案:C
---- I am taking the college entrance examination next week.
---- _____________! [ ]
A. Well done.
B. Good luck.
C. Congratulations.
D. Have a good day.
常用的超薄切片染色剂是()
A.苏木精
B.亚甲兰
C.伊红
D.磷钨酸
E.枸橼酸铅