蒲黄炒阿胶的目的是（）
A.降低药物毒性
B.利于贮存保管
C.缓和药物性能
D.协同止血作用
E.温补肝肾，便于服用
参考答案：D
Nobody believed his reason for his being absent from class ___ he had to meet his uncle at the
airport. [ ]
A. why
B. that
C. where
D. because
润滑油库应防雨、防晒、防尘、干燥清洁、通风良好、并有完善的消防设施。（）
