病原学检查检出率最高的标本采集阶段是（）
A.潜伏期
B.前驱期
C.急性期
D.恢复期
参考答案：C
Although it had been________ struggle for him to finish______ experiment, he enjoyed the
result with________ satisfaction. [ ]
A the, an, /
B a, the, /
C a, an, a
D /, the, a
血液制品在临床上如何应用?
