鉴别细菌最常用的染色法是（）
A.抗酸染色法
B.亚甲蓝染色法
C.复红染色法
D.革兰染色法
E.墨汁染色法
参考答案：D
隐孢子虫病的临床表现和转归与病人的免疫功能状态密切相关，免疫功能正常者的潜伏期长，一般为20～30天，而免疫功能低下者，潜伏期则较短，一般为7～10天。
— The boss said we had only three days to finish the work.
— Don't worry. We have already _____ two thirds of it. [ ]
A. got down
B. got through
C. given in
D. given away
